[HBase配置]-- 常数说明（2.x之前版本）

参考官方：

​​https://hbase.apache.org/apidocs/constant-values.html​​

​​https://hbase.apache.org/apidocs/org/apache/hadoop/hbase/HConstants.html#MAX_ROW_LENGTH​​

包含每一种说明

​​SKIPNAVIGATION LINKS​​

HConstantsholds a bunch of HBase-related constants

·        Field Summary

·        Method Summary

·        Methods inherited from class java.lang.​​Object​​

​​clone​​​, ​​equals​​​, ​​finalize​​​, ​​getClass​​​, ​​hashCode​​​, ​​notify​​​, ​​notifyAll​​​, ​​toString​​​, ​​wait​​​, ​​wait​​​, ​​wait​​

·         

·        Field Detail

·        UTF8_ENCODING

public static final ​​String​​​​UTF8_ENCODING​​

When weencode strings, we always specify UTF8 encoding

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·        UTF8_CHARSET

public static final ​​Charset​​​​UTF8_CHARSET​​

When weencode strings, we always specify UTF8 encoding

·        DEFAULT_BLOCKSIZE

public static final int ​​DEFAULT_BLOCKSIZE​​

Default blocksize for an HFile.

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·        INDEX_KEY_MAGIC

public static final int ​​INDEX_KEY_MAGIC​​

Used as amagic return value while optimized index key feature enabled(HBASE-7845)

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·        RECOVERED_EDITS_DIR

public static final ​​String​​​​RECOVERED_EDITS_DIR​​

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·        RPC_HEADER

public static final byte[] ​​RPC_HEADER​​

The firstfour bytes of Hadoop RPC connections

·        RPC_CURRENT_VERSION

public static final byte ​​RPC_CURRENT_VERSION​​

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·        HFILEBLOCK_HEADER_SIZE_NO_CHECKSUM

public static final int ​​HFILEBLOCK_HEADER_SIZE_NO_CHECKSUM​​

The size datastructures with minor version is 0

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·        HFILEBLOCK_HEADER_SIZE

public static final int ​​HFILEBLOCK_HEADER_SIZE​​

The size of aversion 2 HFile block header, minor version 1. There is a 1 byte checksum type,followed by a 4 byte bytesPerChecksum followed by another 4 byte value to storesizeofDataOnDisk.

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·        HFILEBLOCK_DUMMY_HEADER

public static final byte[] ​​HFILEBLOCK_DUMMY_HEADER​​

Just an arrayof bytes of the right size.

·        ZERO_L

public static final ​​Long​​​​ZERO_L​​

long constantfor zero

·        NINES

public static final ​​String​​​​NINES​​

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·        ZEROES

public static final ​​String​​​​ZEROES​​

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·        VERSION_FILE_NAME

public static final ​​String​​​​VERSION_FILE_NAME​​

name ofversion file

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·        FILE_SYSTEM_VERSION

public static final ​​String​​​​FILE_SYSTEM_VERSION​​

Currentversion of file system. Version 4 supports only one kind of bloom filter.Version 5 changes versions in catalog table regions. Version 6 enablesblockcaching on catalog tables. Version 7 introduces hfile -- hbase 0.19 to0.20.. Version 8 introduces namespace

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·        CLUSTER_DISTRIBUTED

public static final ​​String​​​​CLUSTER_DISTRIBUTED​​

Cluster is indistributed mode or not

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·        HBASE_MASTER_LOADBALANCER_CLASS

public static final ​​String​​​​HBASE_MASTER_LOADBALANCER_CLASS​​

Config forpluggable load balancers

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·        HBASE_MASTER_LOADBALANCE_BYTABLE

public static final ​​String​​​​HBASE_MASTER_LOADBALANCE_BYTABLE​​

Config forbalancing the cluster by table

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·        HBASE_MASTER_BALANCER_MAX_RIT_PERCENT

public static final ​​String​​​​HBASE_MASTER_BALANCER_MAX_RIT_PERCENT​​

Config forthe max percent of regions in transition

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·        DEFAULT_HBASE_MASTER_BALANCER_MAX_RIT_PERCENT

public static final double ​​DEFAULT_HBASE_MASTER_BALANCER_MAX_RIT_PERCENT​​

Default valuefor the max percent of regions in transition

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·        HBASE_BALANCER_MAX_BALANCING

public static final ​​String​​​​HBASE_BALANCER_MAX_BALANCING​​

Config forthe max balancing time

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·        HBASE_BALANCER_PERIOD

public static final ​​String​​​​HBASE_BALANCER_PERIOD​​

Config forthe balancer period

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·        DEFAULT_HBASE_BALANCER_PERIOD

public static final int ​​DEFAULT_HBASE_BALANCER_PERIOD​​

Default valuefor the balancer period

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·        ENSEMBLE_TABLE_NAME

public static final ​​TableName​​​​ENSEMBLE_TABLE_NAME​​

The name ofthe ensemble table

·        HBASE_MASTER_NORMALIZER_CLASS

public static final ​​String​​​​HBASE_MASTER_NORMALIZER_CLASS​​

Config forpluggable region normalizer

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·        CLUSTER_IS_LOCAL

public static final boolean ​​CLUSTER_IS_LOCAL​​

Cluster isstandalone or pseudo-distributed

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·        CLUSTER_IS_DISTRIBUTED

public static final boolean ​​CLUSTER_IS_DISTRIBUTED​​

Cluster isfully-distributed

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·        DEFAULT_CLUSTER_DISTRIBUTED

public static final boolean ​​DEFAULT_CLUSTER_DISTRIBUTED​​

Default valuefor cluster distributed mode

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·        DEFAULT_HOST

public static final ​​String​​​​DEFAULT_HOST​​

default hostaddress

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·        MASTER_PORT

public static final ​​String​​​​MASTER_PORT​​

Parametername for port master listens on.

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·        DEFAULT_MASTER_PORT

public static final int ​​DEFAULT_MASTER_PORT​​

default portthat the master listens on

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·        DEFAULT_MASTER_INFOPORT

public static final int ​​DEFAULT_MASTER_INFOPORT​​

default portfor master web api

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·        MASTER_INFO_PORT

public static final ​​String​​​​MASTER_INFO_PORT​​

Configurationkey for master web API port

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·        MASTER_TYPE_BACKUP

public static final ​​String​​​​MASTER_TYPE_BACKUP​​

Parametername for the master type being backup (waits for primary to go inactive).

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·        DEFAULT_MASTER_TYPE_BACKUP

public static final boolean ​​DEFAULT_MASTER_TYPE_BACKUP​​

by defaultevery master is a possible primary master unless the conf explicitly overridesit

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·        ZOOKEEPER_QUORUM

public static final ​​String​​​​ZOOKEEPER_QUORUM​​

Name ofZooKeeper quorum configuration parameter.

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·        ZK_CFG_PROPERTY_PREFIX

public static final ​​String​​​​ZK_CFG_PROPERTY_PREFIX​​

Common prefixof ZooKeeper configuration properties

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·        ZK_CFG_PROPERTY_PREFIX_LEN

public static final int ​​ZK_CFG_PROPERTY_PREFIX_LEN​​

·        CLIENT_PORT_STR

public static final ​​String​​​​CLIENT_PORT_STR​​

The ZK clientport key in the ZK properties map. The name reflects the fact that this is notan HBase configuration key.

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·        ZOOKEEPER_CLIENT_PORT

public static final ​​String​​​​ZOOKEEPER_CLIENT_PORT​​

Parametername for the client port that the zookeeper listens on

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·        DEFAULT_ZOOKEPER_CLIENT_PORT

public static final int ​​DEFAULT_ZOOKEPER_CLIENT_PORT​​

Defaultclient port that the zookeeper listens on

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·        ZOOKEEPER_RECOVERABLE_WAITTIME

public static final ​​String​​​​ZOOKEEPER_RECOVERABLE_WAITTIME​​

Parametername for the wait time for the recoverable zookeeper

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·        DEFAULT_ZOOKEPER_RECOVERABLE_WAITIME

public static final long ​​DEFAULT_ZOOKEPER_RECOVERABLE_WAITIME​​

Default waittime for the recoverable zookeeper

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·        ZOOKEEPER_ZNODE_PARENT

public static final ​​String​​​​ZOOKEEPER_ZNODE_PARENT​​

Parametername for the root dir in ZK for this cluster

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·        DEFAULT_ZOOKEEPER_ZNODE_PARENT

public static final ​​String​​​​DEFAULT_ZOOKEEPER_ZNODE_PARENT​​

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·        ZOOKEEPER_MAX_CLIENT_CNXNS

public static final ​​String​​​​ZOOKEEPER_MAX_CLIENT_CNXNS​​

Parametername for the limit on concurrent client-side zookeeper connections

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·        ZOOKEEPER_DATA_DIR

public static final ​​String​​​​ZOOKEEPER_DATA_DIR​​

Parametername for the ZK data directory

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·        ZOOKEEPER_TICK_TIME

public static final ​​String​​​​ZOOKEEPER_TICK_TIME​​

Parametername for the ZK tick time

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·        DEFAULT_ZOOKEPER_MAX_CLIENT_CNXNS

public static final int ​​DEFAULT_ZOOKEPER_MAX_CLIENT_CNXNS​​

Default limiton concurrent client-side zookeeper connections

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·        ZK_SESSION_TIMEOUT

public static final ​​String​​​​ZK_SESSION_TIMEOUT​​

Configurationkey for ZooKeeper session timeout

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·        DEFAULT_ZK_SESSION_TIMEOUT

public static final int ​​DEFAULT_ZK_SESSION_TIMEOUT​​

Default valuefor ZooKeeper session timeout

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·        REGIONSERVER_PORT

public static final ​​String​​​​REGIONSERVER_PORT​​

Parametername for port region server listens on.

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·        DEFAULT_REGIONSERVER_PORT

public static final int ​​DEFAULT_REGIONSERVER_PORT​​

Default portregion server listens on.

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·        DEFAULT_REGIONSERVER_INFOPORT

public static final int ​​DEFAULT_REGIONSERVER_INFOPORT​​

default portfor region server web api

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·        REGIONSERVER_INFO_PORT

public static final ​​String​​​​REGIONSERVER_INFO_PORT​​

Aconfiguration key for regionserver info port

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·        REGIONSERVER_INFO_PORT_AUTO

public static final ​​String​​​​REGIONSERVER_INFO_PORT_AUTO​​

A flag thatenables automatic selection of regionserver info port

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·        REGION_SERVER_IMPL

public static final ​​String​​​​REGION_SERVER_IMPL​​

Parametername for what region server implementation to use.

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·        MASTER_IMPL

public static final ​​String​​​​MASTER_IMPL​​

Parametername for what master implementation to use.

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·        HBASECLIENT_IMPL

public static final ​​String​​​​HBASECLIENT_IMPL​​

Parametername for what hbase client implementation to use.

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·        THREAD_WAKE_FREQUENCY

public static final ​​String​​​​THREAD_WAKE_FREQUENCY​​

Parametername for how often threads should wake up

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·        DEFAULT_THREAD_WAKE_FREQUENCY

public static final int ​​DEFAULT_THREAD_WAKE_FREQUENCY​​

Default valuefor thread wake frequency

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·        VERSION_FILE_WRITE_ATTEMPTS

public static final ​​String​​​​VERSION_FILE_WRITE_ATTEMPTS​​

Parametername for how often we should try to write a version file, before failing

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·        DEFAULT_VERSION_FILE_WRITE_ATTEMPTS

public static final int ​​DEFAULT_VERSION_FILE_WRITE_ATTEMPTS​​

Parametername for how often we should try to write a version file, before failing

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·        MAJOR_COMPACTION_PERIOD

public static final ​​String​​​​MAJOR_COMPACTION_PERIOD​​

Parametername for how often a region should should perform a major compaction

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·        COMPACTION_KV_MAX

public static final ​​String​​​​COMPACTION_KV_MAX​​

Parametername for the maximum batch of KVs to be used in flushes and compactions

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·        COMPACTION_KV_MAX_DEFAULT

public static final int ​​COMPACTION_KV_MAX_DEFAULT​​

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·        HBASE_DIR

public static final ​​String​​​​HBASE_DIR​​

Parametername for HBase instance root directory

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·        HBASE_CLIENT_IPC_POOL_TYPE

public static final ​​String​​​​HBASE_CLIENT_IPC_POOL_TYPE​​

Parametername for HBase client IPC pool type

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·        HBASE_CLIENT_IPC_POOL_SIZE

public static final ​​String​​​​HBASE_CLIENT_IPC_POOL_SIZE​​

Parametername for HBase client IPC pool size

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·        HBASE_CLIENT_OPERATION_TIMEOUT

public static final ​​String​​​​HBASE_CLIENT_OPERATION_TIMEOUT​​

Parametername for HBase client operation timeout.

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·        HBASE_CLIENT_META_OPERATION_TIMEOUT

public static final ​​String​​​​HBASE_CLIENT_META_OPERATION_TIMEOUT​​

Parametername for HBase client operation timeout.

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·        DEFAULT_HBASE_CLIENT_OPERATION_TIMEOUT

public static final int ​​DEFAULT_HBASE_CLIENT_OPERATION_TIMEOUT​​

Default HBaseclient operation timeout, which is tantamount to a blocking call

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·        HBASE_CLIENT_META_REPLICA_SCAN_TIMEOUT

public static final ​​String​​​​HBASE_CLIENT_META_REPLICA_SCAN_TIMEOUT​​

Parametername for HBase client meta replica scan call timeout.

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·        HBASE_CLIENT_META_REPLICA_SCAN_TIMEOUT_DEFAULT

public static final int ​​HBASE_CLIENT_META_REPLICA_SCAN_TIMEOUT_DEFAULT​​

Default HBaseclient meta replica scan call timeout, 1 second

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·        HREGION_LOGDIR_NAME

public static final ​​String​​​​HREGION_LOGDIR_NAME​​

Used toconstruct the name of the log directory for a region server

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·        SPLIT_LOGDIR_NAME

public static final ​​String​​​​SPLIT_LOGDIR_NAME​​

Used toconstruct the name of the splitlog directory for a region server

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·        HREGION_OLDLOGDIR_NAME

public static final ​​String​​​​HREGION_OLDLOGDIR_NAME​​

Like theprevious, but for old logs that are about to be deleted

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·        BULKLOAD_STAGING_DIR_NAME

public static final ​​String​​​​BULKLOAD_STAGING_DIR_NAME​​

Staging dirused by bulk load

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·        CORRUPT_DIR_NAME

public static final ​​String​​​​CORRUPT_DIR_NAME​​

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·        HBCK_SIDELINEDIR_NAME

public static final ​​String​​​​HBCK_SIDELINEDIR_NAME​​

Used by HBCKto sideline backup data

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·        MIGRATION_NAME

public static final ​​String​​​​MIGRATION_NAME​​

Any artifactsleft from migration can be moved here

See Also:

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·        LIB_DIR

public static final ​​String​​​​LIB_DIR​​

The directoryfrom which co-processor/custom filter jars can be loaded dynamically by theregion servers. This value can be overridden by the hbase.dynamic.jars.dirconfig.

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​​Constant Field Values​​

·        HREGION_COMPACTIONDIR_NAME

public static final ​​String​​​​HREGION_COMPACTIONDIR_NAME​​

Used toconstruct the name of the compaction directory during compaction

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·        HREGION_MAX_FILESIZE

public static final ​​String​​​​HREGION_MAX_FILESIZE​​

Conf key forthe max file size after which we split the region

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·        DEFAULT_MAX_FILE_SIZE

public static final long ​​DEFAULT_MAX_FILE_SIZE​​

Defaultmaximum file size

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·        TABLE_MAX_ROWSIZE_KEY

public static final ​​String​​​​TABLE_MAX_ROWSIZE_KEY​​

Max size ofsingle row for Get's or Scan's without in-row scanning flag set.

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·        TABLE_MAX_ROWSIZE_DEFAULT

public static final long ​​TABLE_MAX_ROWSIZE_DEFAULT​​

Default maxrow size (1 Gb).

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​​Constant Field Values​​

·        HSTORE_OPEN_AND_CLOSE_THREADS_MAX

public static final ​​String​​​​HSTORE_OPEN_AND_CLOSE_THREADS_MAX​​

The maxnumber of threads used for opening and closing stores or store files inparallel

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​​Constant Field Values​​

·        DEFAULT_HSTORE_OPEN_AND_CLOSE_THREADS_MAX

public static final int ​​DEFAULT_HSTORE_OPEN_AND_CLOSE_THREADS_MAX​​

The defaultnumber for the max number of threads used for opening and closing stores orstore files in parallel

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​​Constant Field Values​​

·        HREGION_MEMSTORE_BLOCK_MULTIPLIER

public static final ​​String​​​​HREGION_MEMSTORE_BLOCK_MULTIPLIER​​

Block updatesif memstore has hbase.hregion.memstore.block.multiplier timeshbase.hregion.memstore.flush.size bytes. Useful preventing runaway memstoreduring spikes in update traffic.

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·        DEFAULT_HREGION_MEMSTORE_BLOCK_MULTIPLIER

public static final int ​​DEFAULT_HREGION_MEMSTORE_BLOCK_MULTIPLIER​​

Default valuefor hbase.hregion.memstore.block.multiplier

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·        HREGION_MEMSTORE_FLUSH_SIZE

public static final ​​String​​​​HREGION_MEMSTORE_FLUSH_SIZE​​

Conf key forthe memstore size at which we flush the memstore

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·        HREGION_EDITS_REPLAY_SKIP_ERRORS

public static final ​​String​​​​HREGION_EDITS_REPLAY_SKIP_ERRORS​​

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·        DEFAULT_HREGION_EDITS_REPLAY_SKIP_ERRORS

public static final boolean ​​DEFAULT_HREGION_EDITS_REPLAY_SKIP_ERRORS​​

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·        MAXIMUM_VALUE_LENGTH

public static final int ​​MAXIMUM_VALUE_LENGTH​​

Maximum valuelength, enforced on KeyValue construction

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·        CLUSTER_ID_FILE_NAME

public static final ​​String​​​​CLUSTER_ID_FILE_NAME​​

name of thefile for unique cluster ID

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​​Constant Field Values​​

·        CLUSTER_ID_DEFAULT

public static final ​​String​​​​CLUSTER_ID_DEFAULT​​

Default valuefor cluster ID

See Also:

​​Constant Field Values​​

·        KEEP_SEQID_PERIOD

public static final ​​String​​​​KEEP_SEQID_PERIOD​​

Parametername for # days to keep MVCC values during a major compaction

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​​Constant Field Values​​

·        MIN_KEEP_SEQID_PERIOD

public static final int ​​MIN_KEEP_SEQID_PERIOD​​

At least tokeep MVCC values in hfiles for 5 days

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​​Constant Field Values​​

·        META_TABLE_NAME

·        ​​@Deprecated​​

public static final byte[] ​​META_TABLE_NAME​​

Deprecated. For upgrades of 0.94 to 0.96

Thehbase:meta table's name.

·        BASE_NAMESPACE_DIR

public static final ​​String​​​​BASE_NAMESPACE_DIR​​

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​​Constant Field Values​​

·        META_ROW_DELIMITER

public static final int ​​META_ROW_DELIMITER​​

delimiterused between portions of a region name

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·        CATALOG_FAMILY_STR

public static final ​​String​​​​CATALOG_FAMILY_STR​​

The catalogfamily as a string

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·        CATALOG_FAMILY

public static final byte[] ​​CATALOG_FAMILY​​

The catalogfamily

·        REPLICATION_BARRIER_FAMILY_STR

public static final ​​String​​​​REPLICATION_BARRIER_FAMILY_STR​​

Thereplication barrier family as a string

See Also:

​​Constant Field Values​​

·        REPLICATION_BARRIER_FAMILY

public static final byte[] ​​REPLICATION_BARRIER_FAMILY​​

Thereplication barrier family

·        REPLICATION_POSITION_FAMILY_STR

public static final ​​String​​​​REPLICATION_POSITION_FAMILY_STR​​

Thereplication position family as a string

See Also:

​​Constant Field Values​​

·        REPLICATION_POSITION_FAMILY

public static final byte[] ​​REPLICATION_POSITION_FAMILY​​

Thereplication position family

·        REPLICATION_META_FAMILY_STR

public static final ​​String​​​​REPLICATION_META_FAMILY_STR​​

Thereplication meta family as a string

See Also:

​​Constant Field Values​​

·        REPLICATION_META_FAMILY

public static final byte[] ​​REPLICATION_META_FAMILY​​

Thereplication meta family

·        REGIONINFO_QUALIFIER_STR

public static final ​​String​​​​REGIONINFO_QUALIFIER_STR​​

TheRegionInfo qualifier as a string

See Also:

​​Constant Field Values​​

·        REGIONINFO_QUALIFIER

public static final byte[] ​​REGIONINFO_QUALIFIER​​

Theregioninfo column qualifier

·        SERVER_QUALIFIER_STR

public static final ​​String​​​​SERVER_QUALIFIER_STR​​

The servercolumn qualifier

See Also:

​​Constant Field Values​​

·        SERVER_QUALIFIER

public static final byte[] ​​SERVER_QUALIFIER​​

The servercolumn qualifier

·        STARTCODE_QUALIFIER_STR

public static final ​​String​​​​STARTCODE_QUALIFIER_STR​​

The startcodecolumn qualifier

See Also:

​​Constant Field Values​​

·        STARTCODE_QUALIFIER

public static final byte[] ​​STARTCODE_QUALIFIER​​

The startcodecolumn qualifier

·        SEQNUM_QUALIFIER_STR

public static final ​​String​​​​SEQNUM_QUALIFIER_STR​​

The openseqnum column qualifier

See Also:

​​Constant Field Values​​

·        SEQNUM_QUALIFIER

public static final byte[] ​​SEQNUM_QUALIFIER​​

The openseqnum column qualifier

·        STATE_QUALIFIER_STR

public static final ​​String​​​​STATE_QUALIFIER_STR​​

The statecolumn qualifier

See Also:

​​Constant Field Values​​

·        STATE_QUALIFIER

public static final byte[] ​​STATE_QUALIFIER​​

·        SERVERNAME_QUALIFIER_STR

public static final ​​String​​​​SERVERNAME_QUALIFIER_STR​​

TheserverName column qualifier. Its the server where the region is transitioningon, while column server is the server where the region is opened on. They arethe same when the region is in state OPEN.

See Also:

​​Constant Field Values​​

·        SERVERNAME_QUALIFIER

public static final byte[] ​​SERVERNAME_QUALIFIER​​

·        SPLITA_QUALIFIER

public static final byte[] ​​SPLITA_QUALIFIER​​

Thelower-half split region column qualifier

·        SPLITB_QUALIFIER

public static final byte[] ​​SPLITB_QUALIFIER​​

Theupper-half split region column qualifier

·        MERGEA_QUALIFIER

public static final byte[] ​​MERGEA_QUALIFIER​​

Thelower-half merge region column qualifier

·        MERGEB_QUALIFIER

public static final byte[] ​​MERGEB_QUALIFIER​​

Theupper-half merge region column qualifier

·        TABLE_FAMILY_STR

public static final ​​String​​​​TABLE_FAMILY_STR​​

The catalogfamily as a string

See Also:

​​Constant Field Values​​

·        TABLE_FAMILY

public static final byte[] ​​TABLE_FAMILY​​

The catalogfamily

·        TABLE_STATE_QUALIFIER

public static final byte[] ​​TABLE_STATE_QUALIFIER​​

Theserialized table state qualifier

·        META_VERSION_QUALIFIER

public static final byte[] ​​META_VERSION_QUALIFIER​​

The metatable version column qualifier. We keep current version of the meta table inthis column in -ROOT- table: i.e. in the 'info:v'column.

·        META_VERSION

public static final short ​​META_VERSION​​

The currentversion of the meta table. - pre-hbase 0.92. There is no META_VERSION column inthe root table in this case. The meta has HTableDescriptor serialized into theHRegionInfo; - version 0 is 0.92 and 0.94. Meta data has serializedHRegionInfo's using Writable serialization, and HRegionInfo's does not containHTableDescriptors. - version 1 for 0.96+ keeps HRegionInfo data structures, butchanges the byte[] serialization from Writables to Protobuf. SeeHRegionInfo.VERSION

See Also:

​​Constant Field Values​​

·        EMPTY_BYTE_ARRAY

public static final byte[] ​​EMPTY_BYTE_ARRAY​​

An emptyinstance.

·        EMPTY_BYTE_BUFFER

public static final ​​ByteBuffer​​​​EMPTY_BYTE_BUFFER​​

·        EMPTY_START_ROW

public static final byte[] ​​EMPTY_START_ROW​​

Used byscanners, etc when they want to start at the beginning of a region

·        EMPTY_END_ROW

public static final byte[] ​​EMPTY_END_ROW​​

Last row in atable.

·        LAST_ROW

public static final byte[] ​​LAST_ROW​​

Used byscanners and others when they're trying to detect the end of a table

·        MAX_ROW_LENGTH

public static final int ​​MAX_ROW_LENGTH​​

Max length arow can have because of the limitation in TFile.

See Also:

​​Constant Field Values​​

·        LATEST_TIMESTAMP

public static final long ​​LATEST_TIMESTAMP​​

Timestamp touse when we want to refer to the latest cell. This is the timestamp sent byclients when no timestamp is specified on commit.

See Also:

​​Constant Field Values​​

·        OLDEST_TIMESTAMP

·        ​​@Deprecated​​

public static final long ​​OLDEST_TIMESTAMP​​

Deprecated. Should not be public since hbase-1.3.0. For internal use only.Move internal to Scanners flagged as special timestamp value never to bereturned as timestamp on a Cell.

Timestamp touse when we want to refer to the oldest cell. Special! Used in fake Cells only.Should never be the timestamp on an actual Cell returned to a client.

See Also:

​​Constant Field Values​​

·        LATEST_TIMESTAMP_BYTES

public static final byte[] ​​LATEST_TIMESTAMP_BYTES​​

LATEST_TIMESTAMPin bytes form

·        ALL_VERSIONS

public static final int ​​ALL_VERSIONS​​

Define for'return-all-versions'.

See Also:

​​Constant Field Values​​

·        FOREVER

public static final int ​​FOREVER​​

Unlimitedtime-to-live.

See Also:

​​Constant Field Values​​

·        WEEK_IN_SECONDS

public static final int ​​WEEK_IN_SECONDS​​

Seconds in aweek

See Also:

​​Constant Field Values​​

·        DAY_IN_SECONDS

public static final int ​​DAY_IN_SECONDS​​

Seconds in aday, hour and minute

See Also:

​​Constant Field Values​​

·        HOUR_IN_SECONDS

public static final int ​​HOUR_IN_SECONDS​​

See Also:

​​Constant Field Values​​

·        MINUTE_IN_SECONDS

public static final int ​​MINUTE_IN_SECONDS​​

See Also:

​​Constant Field Values​​

·        NAME

public static final ​​String​​​​NAME​​

See Also:

​​Constant Field Values​​

·        VERSIONS

public static final ​​String​​​​VERSIONS​​

See Also:

​​Constant Field Values​​

·        IN_MEMORY

public static final ​​String​​​​IN_MEMORY​​

See Also:

​​Constant Field Values​​

·        METADATA

public static final ​​String​​​​METADATA​​

See Also:

​​Constant Field Values​​

·        CONFIGURATION

public static final ​​String​​​​CONFIGURATION​​

See Also:

​​Constant Field Values​​

·        RETRY_BACKOFF

public static final int[] ​​RETRY_BACKOFF​​

Retrying wemultiply hbase.client.pause setting by what we have in this array until we runout of array items. Retries beyond this use the last number in the array. So,for example, if hbase.client.pause is 1 second, and maximum retries counthbase.client.retries.number is 10, we will retry at the following intervals: 1,2, 3, 5, 10, 20, 40, 100, 100, 100. With 100ms, a back-off of 200 means 20s

·        REGION_IMPL

public static final ​​String​​​​REGION_IMPL​​

See Also:

​​Constant Field Values​​

·        REPLICATION_SCOPE_LOCAL

public static final int ​​REPLICATION_SCOPE_LOCAL​​

Scope tag forlocally scoped data. This data will not be replicated.

See Also:

​​Constant Field Values​​

·        REPLICATION_SCOPE_GLOBAL

public static final int ​​REPLICATION_SCOPE_GLOBAL​​

Scope tag forglobally scoped data. This data will be replicated to all peers.

See Also:

​​Constant Field Values​​

·        REPLICATION_SCOPE_SERIAL

public static final int ​​REPLICATION_SCOPE_SERIAL​​

Scope tag forserially scoped data This data will be replicated to all peers by the order ofsequence id.

See Also:

​​Constant Field Values​​

·        DEFAULT_CLUSTER_ID

public static final ​​UUID​​​​DEFAULT_CLUSTER_ID​​

Defaultcluster ID, cannot be used to identify a cluster so a key with this value meansit wasn't meant for replication.

·        HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE_KEY

public static final ​​String​​​​HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE_KEY​​

Parametername for maximum number of bytes returned when calling a scanner's next method.Controlled by the client.

See Also:

​​Constant Field Values​​

·        HBASE_SERVER_SCANNER_MAX_RESULT_SIZE_KEY

public static final ​​String​​​​HBASE_SERVER_SCANNER_MAX_RESULT_SIZE_KEY​​

Parametername for maximum number of bytes returned when calling a scanner's next method.Controlled by the server.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE

public static final long ​​DEFAULT_HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE​​

Maximumnumber of bytes returned when calling a scanner's next method. Note that when asingle row is larger than this limit the row is still returned completely. Thedefault value is 2MB.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_SERVER_SCANNER_MAX_RESULT_SIZE

public static final long ​​DEFAULT_HBASE_SERVER_SCANNER_MAX_RESULT_SIZE​​

Maximumnumber of bytes returned when calling a scanner's next method. Note that when asingle row is larger than this limit the row is still returned completely.Safety setting to protect the region server. The default value is 100MB. (aclient would rarely request larger chunks on purpose)

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_PAUSE

public static final ​​String​​​​HBASE_CLIENT_PAUSE​​

Parametername for client pause value, used mostly as value to wait before running aretry of a failed get, region lookup, etc.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_PAUSE

public static final long ​​DEFAULT_HBASE_CLIENT_PAUSE​​

Default valueof ​​HBASE_CLIENT_PAUSE​​.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_PAUSE_FOR_CQTBE

public static final ​​String​​​​HBASE_CLIENT_PAUSE_FOR_CQTBE​​

Parametername for client pause value for special case such as call queue too big, etc.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_MAX_TOTAL_TASKS

public static final ​​String​​​​HBASE_CLIENT_MAX_TOTAL_TASKS​​

The maximumnumber of concurrent connections the client will maintain.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_MAX_TOTAL_TASKS

public static final int ​​DEFAULT_HBASE_CLIENT_MAX_TOTAL_TASKS​​

Default valueof ​​HBASE_CLIENT_MAX_TOTAL_TASKS​​.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_MAX_PERSERVER_TASKS

public static final ​​String​​​​HBASE_CLIENT_MAX_PERSERVER_TASKS​​

The maximumnumber of concurrent connections the client will maintain to a singleRegionServer.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_MAX_PERSERVER_TASKS

public static final int ​​DEFAULT_HBASE_CLIENT_MAX_PERSERVER_TASKS​​

Default valueof ​​HBASE_CLIENT_MAX_PERSERVER_TASKS​​.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_MAX_PERREGION_TASKS

public static final ​​String​​​​HBASE_CLIENT_MAX_PERREGION_TASKS​​

The maximumnumber of concurrent connections the client will maintain to a single Region.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_MAX_PERREGION_TASKS

public static final int ​​DEFAULT_HBASE_CLIENT_MAX_PERREGION_TASKS​​

Default valueof ​​HBASE_CLIENT_MAX_PERREGION_TASKS​​.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_PERSERVER_REQUESTS_THRESHOLD

public static final ​​String​​​​HBASE_CLIENT_PERSERVER_REQUESTS_THRESHOLD​​

The maximumnumber of concurrent pending RPC requests for one server in process level.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_PERSERVER_REQUESTS_THRESHOLD

public static final int ​​DEFAULT_HBASE_CLIENT_PERSERVER_REQUESTS_THRESHOLD​​

Default valueof ​​HBASE_CLIENT_PERSERVER_REQUESTS_THRESHOLD​​.

See Also:

​​Constant Field Values​​

·        HBASE_SERVER_PAUSE

public static final ​​String​​​​HBASE_SERVER_PAUSE​​

Parametername for server pause value, used mostly as value to wait before running aretry of a failed operation.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_SERVER_PAUSE

public static final int ​​DEFAULT_HBASE_SERVER_PAUSE​​

Default valueof ​​HBASE_SERVER_PAUSE​​.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_RETRIES_NUMBER

public static final ​​String​​​​HBASE_CLIENT_RETRIES_NUMBER​​

Parametername for maximum retries, used as maximum for all retryable operations such asfetching of the root region from root region server, getting a cell's value,starting a row update, etc.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_RETRIES_NUMBER

public static final int ​​DEFAULT_HBASE_CLIENT_RETRIES_NUMBER​​

Default valueof ​​HBASE_CLIENT_RETRIES_NUMBER​​.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_SCANNER_CACHING

public static final ​​String​​​​HBASE_CLIENT_SCANNER_CACHING​​

Parametername to set the default scanner caching for all clients.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_SCANNER_CACHING

public static final int ​​DEFAULT_HBASE_CLIENT_SCANNER_CACHING​​

Default valuefor ​​HBASE_CLIENT_SCANNER_CACHING​​

See Also:

​​Constant Field Values​​

·        HBASE_META_SCANNER_CACHING

public static final ​​String​​​​HBASE_META_SCANNER_CACHING​​

Parametername for number of rows that will be fetched when calling next on a scanner ifit is not served from memory. Higher caching values will enable faster scannersbut will eat up more memory and some calls of next may take longer and longertimes when the cache is empty.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_META_SCANNER_CACHING

public static final int ​​DEFAULT_HBASE_META_SCANNER_CACHING​​

Default valueof ​​HBASE_META_SCANNER_CACHING​​.

See Also:

​​Constant Field Values​​

·        HBASE_META_VERSIONS

public static final ​​String​​​​HBASE_META_VERSIONS​​

Parametername for number of versions, kept by meta table.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_META_VERSIONS

public static final int ​​DEFAULT_HBASE_META_VERSIONS​​

Default valueof ​​HBASE_META_VERSIONS​​.

See Also:

​​Constant Field Values​​

·        HBASE_META_BLOCK_SIZE

public static final ​​String​​​​HBASE_META_BLOCK_SIZE​​

Parametername for number of versions, kept by meta table.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_META_BLOCK_SIZE

public static final int ​​DEFAULT_HBASE_META_BLOCK_SIZE​​

Default valueof ​​HBASE_META_BLOCK_SIZE​​.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_INSTANCE_ID

public static final ​​String​​​​HBASE_CLIENT_INSTANCE_ID​​

Parametername for unique identifier for this Configuration instance.If there are two or more Configuration instances that, for all intentsand purposes, are the same except for their instance ids, then they will not beable to share the same org.apache.hadoop.hbase.client.HConnection instance. Onthe other hand, even if the instance ids are the same, it could result in non-sharedorg.apache.hadoop.hbase.client.HConnection instances if some of the otherconnection parameters differ.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD

public static final ​​String​​​​HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD​​

The clientscanner timeout period in milliseconds.

See Also:

​​Constant Field Values​​

·        HBASE_REGIONSERVER_LEASE_PERIOD_KEY

·        ​​@Deprecated​​

public static final ​​String​​​​HBASE_REGIONSERVER_LEASE_PERIOD_KEY​​

Deprecated. This config option is deprecated. Will be removed at laterreleases after 0.96.

Use ​​HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD​​ instead.

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD

public static final int ​​DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD​​

Default valueof ​​HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD​​.

See Also:

​​Constant Field Values​​

·        HBASE_RPC_TIMEOUT_KEY

public static final ​​String​​​​HBASE_RPC_TIMEOUT_KEY​​

timeout foreach RPC

See Also:

​​Constant Field Values​​

·        HBASE_RPC_READ_TIMEOUT_KEY

public static final ​​String​​​​HBASE_RPC_READ_TIMEOUT_KEY​​

timeout foreach read RPC

See Also:

​​Constant Field Values​​

·        HBASE_RPC_WRITE_TIMEOUT_KEY

public static final ​​String​​​​HBASE_RPC_WRITE_TIMEOUT_KEY​​

timeout foreach write RPC

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_RPC_TIMEOUT

public static final int ​​DEFAULT_HBASE_RPC_TIMEOUT​​

Default valueof ​​HBASE_RPC_TIMEOUT_KEY​​

See Also:

​​Constant Field Values​​

·        HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY

public static final ​​String​​​​HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY​​

timeout forshort operation RPC

See Also:

​​Constant Field Values​​

·        DEFAULT_HBASE_RPC_SHORTOPERATION_TIMEOUT

public static final int ​​DEFAULT_HBASE_RPC_SHORTOPERATION_TIMEOUT​​

Default valueof ​​HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY​​

See Also:

​​Constant Field Values​​

·        NO_SEQNUM

public static final long ​​NO_SEQNUM​​

Valueindicating the server name was saved with no sequence number.

See Also:

​​Constant Field Values​​

·        REPLICATION_SOURCE_SERVICE_CLASSNAME

public static final ​​String​​​​REPLICATION_SOURCE_SERVICE_CLASSNAME​​

See Also:

​​Constant Field Values​​

·        REPLICATION_SINK_SERVICE_CLASSNAME

public static final ​​String​​​​REPLICATION_SINK_SERVICE_CLASSNAME​​

See Also:

​​Constant Field Values​​

·        REPLICATION_SERVICE_CLASSNAME_DEFAULT

public static final ​​String​​​​REPLICATION_SERVICE_CLASSNAME_DEFAULT​​

See Also:

​​Constant Field Values​​

·        REPLICATION_BULKLOAD_ENABLE_KEY

public static final ​​String​​​​REPLICATION_BULKLOAD_ENABLE_KEY​​

See Also:

​​Constant Field Values​​

·        REPLICATION_BULKLOAD_ENABLE_DEFAULT

public static final boolean ​​REPLICATION_BULKLOAD_ENABLE_DEFAULT​​

See Also:

​​Constant Field Values​​

·        REPLICATION_CLUSTER_ID

public static final ​​String​​​​REPLICATION_CLUSTER_ID​​

Replicationcluster id of source cluster which uniquely identifies itself with peer cluster

See Also:

​​Constant Field Values​​

·        REPLICATION_SERIALLY_WAITING_KEY

public static final ​​String​​​​REPLICATION_SERIALLY_WAITING_KEY​​

See Also:

​​Constant Field Values​​

·        REPLICATION_SERIALLY_WAITING_DEFAULT

public static final long ​​REPLICATION_SERIALLY_WAITING_DEFAULT​​

See Also:

​​Constant Field Values​​

·        REPLICATION_SOURCE_TOTAL_BUFFER_KEY

public static final ​​String​​​​REPLICATION_SOURCE_TOTAL_BUFFER_KEY​​

Max totalsize of buffered entries in all replication peers. It will prevent servergetting OOM if there are many peers. Default value is 256MB which is four timesto default replication.source.size.capacity.

See Also:

​​Constant Field Values​​

·        REPLICATION_SOURCE_TOTAL_BUFFER_DFAULT

public static final int ​​REPLICATION_SOURCE_TOTAL_BUFFER_DFAULT​​

See Also:

​​Constant Field Values​​

·        REPLICATION_CONF_DIR

public static final ​​String​​​​REPLICATION_CONF_DIR​​

Directorywhere the source cluster file system client configuration are placed which isused by sink cluster to copy HFiles from source cluster file system

See Also:

​​Constant Field Values​​

·        BULKLOAD_MAX_RETRIES_NUMBER

public static final ​​String​​​​BULKLOAD_MAX_RETRIES_NUMBER​​

Maximum timeto retry for a failed bulk load request

See Also:

​​Constant Field Values​​

·        HBCK_CODE_NAME

public static final ​​String​​​​HBCK_CODE_NAME​​

HBCK specialcode name used as server name when manipulating ZK nodes

See Also:

​​Constant Field Values​​

·        KEY_FOR_HOSTNAME_SEEN_BY_MASTER

public static final ​​String​​​​KEY_FOR_HOSTNAME_SEEN_BY_MASTER​​

See Also:

​​Constant Field Values​​

·        HBASE_MASTER_LOGCLEANER_PLUGINS

public static final ​​String​​​​HBASE_MASTER_LOGCLEANER_PLUGINS​​

See Also:

​​Constant Field Values​​

·        HBASE_REGION_SPLIT_POLICY_KEY

public static final ​​String​​​​HBASE_REGION_SPLIT_POLICY_KEY​​

See Also:

​​Constant Field Values​​

·        HBASE_RS_NONCES_ENABLED

public static final ​​String​​​​HBASE_RS_NONCES_ENABLED​​

Whethernonces are enabled; default is true.

See Also:

​​Constant Field Values​​

·        HFILE_BLOCK_CACHE_SIZE_KEY

public static final ​​String​​​​HFILE_BLOCK_CACHE_SIZE_KEY​​

Configurationkey for the size of the block cache

See Also:

​​Constant Field Values​​

·        HFILE_BLOCK_CACHE_SIZE_DEFAULT

public static final float ​​HFILE_BLOCK_CACHE_SIZE_DEFAULT​​

See Also:

​​Constant Field Values​​

·        HBASE_CLUSTER_MINIMUM_MEMORY_THRESHOLD

public static final float ​​HBASE_CLUSTER_MINIMUM_MEMORY_THRESHOLD​​

See Also:

​​Constant Field Values​​

·        CP_HTD_ATTR_KEY_PATTERN

public static final ​​Pattern​​​​CP_HTD_ATTR_KEY_PATTERN​​

·        CP_HTD_ATTR_VALUE_PATTERN

public static final ​​Pattern​​​​CP_HTD_ATTR_VALUE_PATTERN​​

 Pattern that matches a coprocessorspecification. Form is:

  <coprocessor jar file location> '|'<class name> ['|' <priority> ['|' <arguments>]]

 where arguments are  <KEY> '=' <VALUE> [,...]

 For example:  hdfs:///foo.jar|com.foo.FooRegionObserver|1001|arg1=1,arg2=2

·        CP_HTD_ATTR_VALUE_PARAM_KEY_PATTERN

public static final ​​String​​​​CP_HTD_ATTR_VALUE_PARAM_KEY_PATTERN​​

See Also:

​​Constant Field Values​​

·        CP_HTD_ATTR_VALUE_PARAM_VALUE_PATTERN

public static final ​​String​​​​CP_HTD_ATTR_VALUE_PARAM_VALUE_PATTERN​​

See Also:

​​Constant Field Values​​

·        CP_HTD_ATTR_VALUE_PARAM_PATTERN

public static final ​​Pattern​​​​CP_HTD_ATTR_VALUE_PARAM_PATTERN​​

·        CP_HTD_ATTR_INCLUSION_KEY

public static final ​​String​​​​CP_HTD_ATTR_INCLUSION_KEY​​

See Also:

​​Constant Field Values​​

·        SOCKET_RETRY_WAIT_MS

public static final int ​​SOCKET_RETRY_WAIT_MS​​

The delaywhen re-trying a socket operation in a loop (HBASE-4712)

See Also:

​​Constant Field Values​​

·        LOCALHOST

public static final ​​String​​​​LOCALHOST​​

Host name ofthe local machine

See Also:

​​Constant Field Values​​

·        HBASE_CHECKSUM_VERIFICATION

public static final ​​String​​​​HBASE_CHECKSUM_VERIFICATION​​

If thisparameter is set to true, then hbase will read data and then verify checksums.Checksum verification inside hdfs will be switched off. However, if thehbase-checksum verification fails, then it will switch back to using hdfschecksums for verifiying data that is being read from storage. If thisparameter is set to false, then hbase will not verify any checksums, instead itwill depend on checksum verification being done in the hdfs client.

See Also:

​​Constant Field Values​​

·        LOCALHOST_IP

public static final ​​String​​​​LOCALHOST_IP​​

See Also:

​​Constant Field Values​​

·        DISTRIBUTED_LOG_REPLAY_KEY

public static final ​​String​​​​DISTRIBUTED_LOG_REPLAY_KEY​​

Conf key thatenables unflushed WAL edits directly being replayed to region servers

See Also:

​​Constant Field Values​​

·        DEFAULT_DISTRIBUTED_LOG_REPLAY_CONFIG

public static final boolean ​​DEFAULT_DISTRIBUTED_LOG_REPLAY_CONFIG​​

See Also:

​​Constant Field Values​​

·        DISALLOW_WRITES_IN_RECOVERING

public static final ​​String​​​​DISALLOW_WRITES_IN_RECOVERING​​

See Also:

​​Constant Field Values​​

·        DEFAULT_DISALLOW_WRITES_IN_RECOVERING_CONFIG

public static final boolean ​​DEFAULT_DISALLOW_WRITES_IN_RECOVERING_CONFIG​​

See Also:

​​Constant Field Values​​

·        REGION_SERVER_HANDLER_COUNT

public static final ​​String​​​​REGION_SERVER_HANDLER_COUNT​​

See Also:

​​Constant Field Values​​

·        DEFAULT_REGION_SERVER_HANDLER_COUNT

public static final int ​​DEFAULT_REGION_SERVER_HANDLER_COUNT​​

See Also:

​​Constant Field Values​​

·        REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT

public static final ​​String​​​​REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT​​

See Also:

​​Constant Field Values​​

·        DEFAULT_REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT

public static final double ​​DEFAULT_REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT​​

See Also:

​​Constant Field Values​​

·        REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT

public static final ​​String​​​​REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT​​

See Also:

​​Constant Field Values​​

·        DEFAULT_REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT

public static final int ​​DEFAULT_REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT​​

See Also:

​​Constant Field Values​​

·        REGION_SERVER_REPLICATION_HANDLER_COUNT

public static final ​​String​​​​REGION_SERVER_REPLICATION_HANDLER_COUNT​​

See Also:

​​Constant Field Values​​

·        DEFAULT_REGION_SERVER_REPLICATION_HANDLER_COUNT

public static final int ​​DEFAULT_REGION_SERVER_REPLICATION_HANDLER_COUNT​​

See Also:

​​Constant Field Values​​

·        MASTER_HANDLER_COUNT

public static final ​​String​​​​MASTER_HANDLER_COUNT​​

See Also:

​​Constant Field Values​​

·        DEFAULT_MASTER_HANLDER_COUNT

public static final int ​​DEFAULT_MASTER_HANLDER_COUNT​​

See Also:

​​Constant Field Values​​

·        LOG_REPLAY_WAIT_REGION_TIMEOUT

public static final ​​String​​​​LOG_REPLAY_WAIT_REGION_TIMEOUT​​

Conf key thatspecifies timeout value to wait for a region ready

See Also:

​​Constant Field Values​​

·        USE_META_REPLICAS

public static final ​​String​​​​USE_META_REPLICAS​​

Conf key forenabling meta replication

See Also:

​​Constant Field Values​​

·        DEFAULT_USE_META_REPLICAS

public static final boolean ​​DEFAULT_USE_META_REPLICAS​​

See Also:

​​Constant Field Values​​

·        META_REPLICAS_NUM

public static final ​​String​​​​META_REPLICAS_NUM​​

See Also:

​​Constant Field Values​​

·        DEFAULT_META_REPLICA_NUM

public static final int ​​DEFAULT_META_REPLICA_NUM​​

See Also:

​​Constant Field Values​​

·        BYTES_PER_CHECKSUM

public static final ​​String​​​​BYTES_PER_CHECKSUM​​

The name ofthe configuration parameter that specifies the number of bytes in a newlycreated checksum chunk.

See Also:

​​Constant Field Values​​

·        CHECKSUM_TYPE_NAME

public static final ​​String​​​​CHECKSUM_TYPE_NAME​​

The name ofthe configuration parameter that specifies the name of an algorithm that isused to compute checksums for newly created blocks.

See Also:

​​Constant Field Values​​

·        ENABLE_DATA_FILE_UMASK

public static final ​​String​​​​ENABLE_DATA_FILE_UMASK​​

Enable filepermission modification from standard hbase

See Also:

​​Constant Field Values​​

·        DATA_FILE_UMASK_KEY

public static final ​​String​​​​DATA_FILE_UMASK_KEY​​

Filepermission umask to use when creating hbase data files

See Also:

​​Constant Field Values​​

·        ENABLE_WAL_COMPRESSION

public static final ​​String​​​​ENABLE_WAL_COMPRESSION​​

Configurationname of WAL Compression

See Also:

​​Constant Field Values​​

·        WAL_STORAGE_POLICY

public static final ​​String​​​​WAL_STORAGE_POLICY​​

Configurationname of WAL storage policy Valid values are: HOT, COLD, WARM, ALL_SSD, ONE_SSD,LAZY_PERSIST Seehttp://hadoop.apache.org/docs/r2.7.3/hadoop-project-dist/hadoop-hdfs/ArchivalStorage.html

See Also:

​​Constant Field Values​​

·        DEFAULT_WAL_STORAGE_POLICY

public static final ​​String​​​​DEFAULT_WAL_STORAGE_POLICY​​

See Also:

​​Constant Field Values​​

·        METRICS_RIT_STUCK_WARNING_THRESHOLD

public static final ​​String​​​​METRICS_RIT_STUCK_WARNING_THRESHOLD​​

Region inTransition metrics threshold time

See Also:

​​Constant Field Values​​

·        LOAD_BALANCER_SLOP_KEY

public static final ​​String​​​​LOAD_BALANCER_SLOP_KEY​​

See Also:

​​Constant Field Values​​

·        DELIMITER

public static final int ​​DELIMITER​​

delimiterused between portions of a region name

See Also:

​​Constant Field Values​​

·        NORMAL_QOS

public static final int ​​NORMAL_QOS​​

QOSattributes: these attributes are used to demarcate RPC call processing bydifferent set of handlers. For example, HIGH_QOS tagged methods are handled byhigh priority handlers.

See Also:

​​Constant Field Values​​

·        REPLICATION_QOS

public static final int ​​REPLICATION_QOS​​

See Also:

​​Constant Field Values​​

·        REPLAY_QOS

public static final int ​​REPLAY_QOS​​

See Also:

​​Constant Field Values​​

·        QOS_THRESHOLD

public static final int ​​QOS_THRESHOLD​​

See Also:

​​Constant Field Values​​

·        ADMIN_QOS

public static final int ​​ADMIN_QOS​​

See Also:

​​Constant Field Values​​

·        HIGH_QOS

public static final int ​​HIGH_QOS​​

See Also:

​​Constant Field Values​​

·        SYSTEMTABLE_QOS

public static final int ​​SYSTEMTABLE_QOS​​

See Also:

​​Constant Field Values​​

·        HFILE_ARCHIVE_DIRECTORY

public static final ​​String​​​​HFILE_ARCHIVE_DIRECTORY​​

Directoryunder /hbase where archived hfiles are stored

See Also:

​​Constant Field Values​​

·        SNAPSHOT_DIR_NAME

public static final ​​String​​​​SNAPSHOT_DIR_NAME​​

Name of thedirectory to store all snapshots. See SnapshotDescriptionUtils for remainingsnapshot constants; this is here to keep HConstants dependencies at a minimumand uni-directional.

See Also:

​​Constant Field Values​​

·        OLD_SNAPSHOT_DIR_NAME

public static final ​​String​​​​OLD_SNAPSHOT_DIR_NAME​​

See Also:

​​Constant Field Values​​

·        HBASE_TEMP_DIRECTORY

public static final ​​String​​​​HBASE_TEMP_DIRECTORY​​

Temporarydirectory used for table creation and deletion

See Also:

​​Constant Field Values​​

·        REGIONSERVER_METRICS_PERIOD

public static final ​​String​​​​REGIONSERVER_METRICS_PERIOD​​

The period(in milliseconds) between computing region server point in time metrics

See Also:

​​Constant Field Values​​

·        DEFAULT_REGIONSERVER_METRICS_PERIOD

public static final long ​​DEFAULT_REGIONSERVER_METRICS_PERIOD​​

See Also:

​​Constant Field Values​​

·        HBASE_NON_TABLE_DIRS

public static final ​​List​​​<​​String​​​>​​HBASE_NON_TABLE_DIRS​​

Directoriesthat are not HBase table directories

·        HBASE_NON_USER_TABLE_DIRS

public static final ​​List​​​<​​String​​​>​​HBASE_NON_USER_TABLE_DIRS​​

Directoriesthat are not HBase user table directories

·        HEALTH_SCRIPT_LOC

public static final ​​String​​​​HEALTH_SCRIPT_LOC​​

Health scriptrelated settings.

See Also:

​​Constant Field Values​​

·        HEALTH_SCRIPT_TIMEOUT

public static final ​​String​​​​HEALTH_SCRIPT_TIMEOUT​​

See Also:

​​Constant Field Values​​

·        HEALTH_CHORE_WAKE_FREQ

public static final ​​String​​​​HEALTH_CHORE_WAKE_FREQ​​

See Also:

​​Constant Field Values​​

·        DEFAULT_HEALTH_SCRIPT_TIMEOUT

public static final long ​​DEFAULT_HEALTH_SCRIPT_TIMEOUT​​

See Also:

​​Constant Field Values​​

·        HEALTH_FAILURE_THRESHOLD

public static final ​​String​​​​HEALTH_FAILURE_THRESHOLD​​

The maximumnumber of health check failures a server can encounter consecutively.

See Also:

​​Constant Field Values​​

·        DEFAULT_HEALTH_FAILURE_THRESHOLD

public static final int ​​DEFAULT_HEALTH_FAILURE_THRESHOLD​​

See Also:

​​Constant Field Values​​

·        STATUS_PUBLISHED

public static final ​​String​​​​STATUS_PUBLISHED​​

Setting toactivate, or not, the publication of the status by the master. Defaultnotification is by a multicast message.

See Also:

​​Constant Field Values​​

·        STATUS_PUBLISHED_DEFAULT

public static final boolean ​​STATUS_PUBLISHED_DEFAULT​​

See Also:

​​Constant Field Values​​

·        STATUS_MULTICAST_ADDRESS

public static final ​​String​​​​STATUS_MULTICAST_ADDRESS​​

IP to use forthe multicast status messages between the master and the clients. The defaultaddress is chosen as one among others within the ones suitable for multicastmessages.

See Also:

​​Constant Field Values​​

·        DEFAULT_STATUS_MULTICAST_ADDRESS

public static final ​​String​​​​DEFAULT_STATUS_MULTICAST_ADDRESS​​

See Also:

​​Constant Field Values​​

·        STATUS_MULTICAST_BIND_ADDRESS

public static final ​​String​​​​STATUS_MULTICAST_BIND_ADDRESS​​

The addressto use for binding the local socket for receiving multicast. Defaults to0.0.0.0.

See Also:

​​HBASE-9961​​​, ​​Constant Field Values​​

·        DEFAULT_STATUS_MULTICAST_BIND_ADDRESS

public static final ​​String​​​​DEFAULT_STATUS_MULTICAST_BIND_ADDRESS​​

See Also:

​​Constant Field Values​​

·        STATUS_MULTICAST_PORT

public static final ​​String​​​​STATUS_MULTICAST_PORT​​

The port touse for the multicast messages.

See Also:

​​Constant Field Values​​

·        DEFAULT_STATUS_MULTICAST_PORT

public static final int ​​DEFAULT_STATUS_MULTICAST_PORT​​

See Also:

​​Constant Field Values​​

·        NO_NONCE

public static final long ​​NO_NONCE​​

See Also:

​​Constant Field Values​​

·        CIPHER_AES

public static final ​​String​​​​CIPHER_AES​​

Defaultcipher for encryption

See Also:

​​Constant Field Values​​

·        CRYPTO_CIPHERPROVIDER_CONF_KEY

public static final ​​String​​​​CRYPTO_CIPHERPROVIDER_CONF_KEY​​

Configurationkey for the crypto algorithm provider, a class name

See Also:

​​Constant Field Values​​

·        CRYPTO_KEYPROVIDER_CONF_KEY

public static final ​​String​​​​CRYPTO_KEYPROVIDER_CONF_KEY​​

Configurationkey for the crypto key provider, a class name

See Also:

​​Constant Field Values​​

·        CRYPTO_KEYPROVIDER_PARAMETERS_KEY

public static final ​​String​​​​CRYPTO_KEYPROVIDER_PARAMETERS_KEY​​

Configurationkey for the crypto key provider parameters

See Also:

​​Constant Field Values​​

·        CRYPTO_MASTERKEY_NAME_CONF_KEY

public static final ​​String​​​​CRYPTO_MASTERKEY_NAME_CONF_KEY​​

Configurationkey for the name of the master key for the cluster, a string

See Also:

​​Constant Field Values​​

·        CRYPTO_MASTERKEY_ALTERNATE_NAME_CONF_KEY

public static final ​​String​​​​CRYPTO_MASTERKEY_ALTERNATE_NAME_CONF_KEY​​

Configurationkey for the name of the alternate master key for the cluster, a string

See Also:

​​Constant Field Values​​

·        CRYPTO_WAL_ALGORITHM_CONF_KEY

public static final ​​String​​​​CRYPTO_WAL_ALGORITHM_CONF_KEY​​

Configurationkey for the algorithm to use when encrypting the WAL, a string

See Also:

​​Constant Field Values​​

·        CRYPTO_WAL_KEY_NAME_CONF_KEY

public static final ​​String​​​​CRYPTO_WAL_KEY_NAME_CONF_KEY​​

Configurationkey for the name of the master WAL encryption key for the cluster, a string

See Also:

​​Constant Field Values​​

·        CRYPTO_KEY_ALGORITHM_CONF_KEY

public static final ​​String​​​​CRYPTO_KEY_ALGORITHM_CONF_KEY​​

Configurationkey for the algorithm used for creating jks key, a string

See Also:

​​Constant Field Values​​

·        CRYPTO_ALTERNATE_KEY_ALGORITHM_CONF_KEY

public static final ​​String​​​​CRYPTO_ALTERNATE_KEY_ALGORITHM_CONF_KEY​​

Configurationkey for the name of the alternate cipher algorithm for the cluster, a string

See Also:

​​Constant Field Values​​

·        ENABLE_WAL_ENCRYPTION

public static final ​​String​​​​ENABLE_WAL_ENCRYPTION​​

Configurationkey for enabling WAL encryption, a boolean

See Also:

​​Constant Field Values​​

·        RPC_CODEC_CONF_KEY

public static final ​​String​​​​RPC_CODEC_CONF_KEY​​

Configurationkey for setting RPC codec class name

See Also:

​​Constant Field Values​​

·        REPLICATION_CODEC_CONF_KEY

public static final ​​String​​​​REPLICATION_CODEC_CONF_KEY​​

Configurationkey for setting replication codec class name

See Also:

​​Constant Field Values​​

·        REPLICATION_SOURCE_MAXTHREADS_KEY

public static final ​​String​​​​REPLICATION_SOURCE_MAXTHREADS_KEY​​

Maximumnumber of threads used by the replication source for shipping edits to thesinks

See Also:

​​Constant Field Values​​

·        REPLICATION_SOURCE_MAXTHREADS_DEFAULT

public static final int ​​REPLICATION_SOURCE_MAXTHREADS_DEFAULT​​

See Also:

​​Constant Field Values​​

·        HBASE_COORDINATED_STATE_MANAGER_CLASS

public static final ​​String​​​​HBASE_COORDINATED_STATE_MANAGER_CLASS​​

Config forpluggable consensus provider

See Also:

​​Constant Field Values​​

·        HBASE_SPLITLOG_MANAGER_TIMEOUT

public static final ​​String​​​​HBASE_SPLITLOG_MANAGER_TIMEOUT​​

Configurationkey for SplitLog manager timeout

See Also:

​​Constant Field Values​​

·        BUCKET_CACHE_IOENGINE_KEY

public static final ​​String​​​​BUCKET_CACHE_IOENGINE_KEY​​

Currentioengine options in include: heap, offheap and file:PATH (where PATH is thepath to the file that will host the file-based cache. SeeBucketCache#getIOEngineFromName() for list of supported ioengine options.

Set this option and a non-zero ​​BUCKET_CACHE_SIZE_KEY​​ to enable bucketcache.

See Also:

​​Constant Field Values​​

·        BUCKET_CACHE_SIZE_KEY

public static final ​​String​​​​BUCKET_CACHE_SIZE_KEY​​

When usingbucket cache, this is a float that EITHER represents a percentage of total heapmemory size to give to the cache (if < 1.0) OR, it is the capacity inmegabytes of the cache.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_FAST_FAIL_MODE_ENABLED

public static final ​​String​​​​HBASE_CLIENT_FAST_FAIL_MODE_ENABLED​​

Config forenabling/disabling the fast fail mode.

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_ENABLE_FAST_FAIL_MODE_DEFAULT

public static final boolean ​​HBASE_CLIENT_ENABLE_FAST_FAIL_MODE_DEFAULT​​

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_FAST_FAIL_THREASHOLD_MS

public static final ​​String​​​​HBASE_CLIENT_FAST_FAIL_THREASHOLD_MS​​

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_FAST_FAIL_THREASHOLD_MS_DEFAULT

public static final long ​​HBASE_CLIENT_FAST_FAIL_THREASHOLD_MS_DEFAULT​​

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_FAST_FAIL_CLEANUP_MS_DURATION_MS

public static final ​​String​​​​HBASE_CLIENT_FAST_FAIL_CLEANUP_MS_DURATION_MS​​

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_FAST_FAIL_CLEANUP_DURATION_MS_DEFAULT

public static final long ​​HBASE_CLIENT_FAST_FAIL_CLEANUP_DURATION_MS_DEFAULT​​

See Also:

​​Constant Field Values​​

·        HBASE_CLIENT_FAST_FAIL_INTERCEPTOR_IMPL

public static final ​​String​​​​HBASE_CLIENT_FAST_FAIL_INTERCEPTOR_IMPL​​

See Also:

​​Constant Field Values​​

·        ENABLE_CLIENT_BACKPRESSURE

public static final ​​String​​​​ENABLE_CLIENT_BACKPRESSURE​​

Config keyfor if the server should send backpressure and if the client should listen tothat backpressure from the server

See Also:

​​Constant Field Values​​

·        DEFAULT_ENABLE_CLIENT_BACKPRESSURE

public static final boolean ​​DEFAULT_ENABLE_CLIENT_BACKPRESSURE​​

See Also:

​​Constant Field Values​​

·        HEAP_OCCUPANCY_LOW_WATERMARK_KEY

public static final ​​String​​​​HEAP_OCCUPANCY_LOW_WATERMARK_KEY​​

See Also:

​​Constant Field Values​​

·        DEFAULT_HEAP_OCCUPANCY_LOW_WATERMARK

public static final float ​​DEFAULT_HEAP_OCCUPANCY_LOW_WATERMARK​​

See Also:

​​Constant Field Values​​

·        HEAP_OCCUPANCY_HIGH_WATERMARK_KEY

public static final ​​String​​​​HEAP_OCCUPANCY_HIGH_WATERMARK_KEY​​

See Also:

​​Constant Field Values​​

·        DEFAULT_HEAP_OCCUPANCY_HIGH_WATERMARK

public static final float ​​DEFAULT_HEAP_OCCUPANCY_HIGH_WATERMARK​​

See Also:

​​Constant Field Values​​

·        REGION_SPLIT_THREADS_MAX

public static final ​​String​​​​REGION_SPLIT_THREADS_MAX​​

The maxnumber of threads used for splitting storefiles in parallel during the regionsplit process.

See Also:

​​Constant Field Values​​

·        HBASE_CANARY_WRITE_DATA_TTL_KEY

public static final ​​String​​​​HBASE_CANARY_WRITE_DATA_TTL_KEY​​

Canary configkeys

See Also:

​​Constant Field Values​​

·        HBASE_CANARY_WRITE_PERSERVER_REGIONS_LOWERLIMIT_KEY

public static final ​​String​​​​HBASE_CANARY_WRITE_PERSERVER_REGIONS_LOWERLIMIT_KEY​​

See Also:

​​Constant Field Values​​

·        HBASE_CANARY_WRITE_PERSERVER_REGIONS_UPPERLIMIT_KEY

public static final ​​String​​​​HBASE_CANARY_WRITE_PERSERVER_REGIONS_UPPERLIMIT_KEY​​

See Also:

​​Constant Field Values​​

·        HBASE_CANARY_WRITE_VALUE_SIZE_KEY

public static final ​​String​​​​HBASE_CANARY_WRITE_VALUE_SIZE_KEY​​

See Also:

​​Constant Field Values​​

·        HBASE_CANARY_WRITE_TABLE_CHECK_PERIOD_KEY

public static final ​​String​​​​HBASE_CANARY_WRITE_TABLE_CHECK_PERIOD_KEY​​

See Also:

​​Constant Field Values​​

·        HBASE_CANARY_READ_RAW_SCAN_KEY

public static final ​​String​​​​HBASE_CANARY_READ_RAW_SCAN_KEY​​

See Also:

​​Constant Field Values​​

·        ZK_CLIENT_KEYTAB_FILE

public static final ​​String​​​​ZK_CLIENT_KEYTAB_FILE​​

Configurationkeys for programmatic JAAS configuration for secured ZK interaction

See Also:

​​Constant Field Values​​

·        ZK_CLIENT_KERBEROS_PRINCIPAL

public static final ​​String​​​​ZK_CLIENT_KERBEROS_PRINCIPAL​​

See Also:

​​Constant Field Values​​

·        ZK_SERVER_KEYTAB_FILE

public static final ​​String​​​​ZK_SERVER_KEYTAB_FILE​​

See Also:

​​Constant Field Values​​

·        ZK_SERVER_KERBEROS_PRINCIPAL

public static final ​​String​​​​ZK_SERVER_KERBEROS_PRINCIPAL​​

See Also:

​​Constant Field Values​​

·        TEMPORARY_FS_DIRECTORY_KEY

public static final ​​String​​​​TEMPORARY_FS_DIRECTORY_KEY​​

Config keyfor hbase temporary directory in hdfs

See Also:

​​Constant Field Values​​

·        DEFAULT_TEMPORARY_HDFS_DIRECTORY

public static final ​​String​​​​DEFAULT_TEMPORARY_HDFS_DIRECTORY​​

·        SNAPSHOT_RESTORE_TAKE_FAILSAFE_SNAPSHOT

public static final ​​String​​​​SNAPSHOT_RESTORE_TAKE_FAILSAFE_SNAPSHOT​​

See Also:

​​Constant Field Values​​

·        DEFAULT_SNAPSHOT_RESTORE_TAKE_FAILSAFE_SNAPSHOT

public static final boolean ​​DEFAULT_SNAPSHOT_RESTORE_TAKE_FAILSAFE_SNAPSHOT​​

See Also:

​​Constant Field Values​​

·        SNAPSHOT_RESTORE_FAILSAFE_NAME

public static final ​​String​​​​SNAPSHOT_RESTORE_FAILSAFE_NAME​​

See Also:

​​Constant Field Values​​

·        DEFAULT_SNAPSHOT_RESTORE_FAILSAFE_NAME

public static final ​​String​​​​DEFAULT_SNAPSHOT_RESTORE_FAILSAFE_NAME​​

See Also:

​​Constant Field Values​​