于STM32的智能监控与巡检系统设计思路：集成OpenCV、HTTP、TCP/IP与Flask

前提：doris使用broker导入需要单独部署broker，我这边看着部署教程都是不带broker部署部分的。

1.建表

我测试环境的hive数据是用时间分区，在导入时总是报错

type:ETL_QUALITY_UNSATISFIED; msg:quality not good enough to cancel

使用SHOW PARTITIONS FROM demo.`table1`发现没有我导入数据所对应的分区

解决办法：用如下建表语句在新建时就把分区建好，其中比较关键的是"dynamic_partition.create_history_partition" = "true"这个参数。由于默认是false，所以不管设置"dynamic_partition.start" = "-300",这个参数为多大，历史分区就是建不起来，如果导入的数据分区是用历史时间命名，需要带上第一个参数为true才能新建出来历史分区。

建表语句

HDFS导入doris

CREATE TABLE demo.`table1` (
  `a` decimal(10, 0) NULL COMMENT "a",
  `b` varchar(65533) NULL COMMENT "b",
  `c` varchar(65533) NULL COMMENT "c",
  `date` int NULL COMMENT ""
) ENGINE=OLAP 
DUPLICATE KEY(`a`)
COMMENT "测试表"
PARTITION BY RANGE(`date`) 
(
    PARTITION `p20240301` VALUES LESS THAN ("20240302"),
    PARTITION `p20240302` VALUES LESS THAN ("20240303"),
    PARTITION `p20240303` VALUES LESS THAN ("20240304")
)
DISTRIBUTED BY RANDOM
PROPERTIES (
    "dynamic_partition.enable" = "true",
    "dynamic_partition.time_unit" = "DAY",
    "dynamic_partition.start" = "-300",
    "dynamic_partition.end" = "3",
    "dynamic_partition.prefix" = "p",
    "dynamic_partition.buckets" = "1",
    "dynamic_partition.replication_num" = "1",
    "dynamic_partition.create_history_partition" = "true"
)
;

2.导入

导入语句

use demo;
LOAD LABEL load_table1
(
    DATA INFILE("hdfs://ip:port/user/hive/warehouse/table1/*/*")
    INTO TABLE table1
    FORMAT AS "ORC"
    (
a,b,c
    )
    COLUMNS FROM PATH AS (date)
 )
 WITH BROKER broker1
(
    "hadoop.security.authentication" = "kerberos",
    "kerberos_principal" = "xxx/xxx@HADOOP.COM",
    "kerberos_keytab" = "/opt/keytabs/xxx.keytab"
)
PROPERTIES
(
    "timeout" = "72000"
);

3.查看导入结果

show load order by CreateTime desc;