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设置 state ttl 之前 sink 数据能一直更新吗？确认不是因为后来的数据不符合某些 where 条件导致的吗？
liangjinghong 于2022年2月12日周六 14:39写道：
> 你好，我是一个flink新手。为了进行状态管理，我在代码中设置了configuration.setString("table.exec.state.ttl","12h");
>
> 然而，在flink作业运行12小时后，*我的update结果表再也没有更新过*。从web ui可以看到，我的源头与一些算子的Records
> Sent一直在增长，任务也没有出现任何异常，checkpoint也正常，所以我很苦恼是哪里出现了问题
>
> 以下是我的SQL语句：
>
> CREATE TABLE `tbl_rpt_app_usage`
>
> (`datepoint` TIMESTAMP,
>
> `appId` VARCHAR ,
>
> `flavor` VARCHAR ,
>
> `applyNum` BIGINT ,
>
> `releaseNum` BIGINT ,
>
> `usedNum` BIGINT ,
>
>PRIMARY KEY (`datepoint`) NOT ENFORCED
>
> )WITH(
>
> 'connector' = 'mysql-cdc',
>
> 'hostname' = '',
>
> 'port' = '3306',
>
> 'username' = '',
>
> 'password' = '',
>
> 'database-name' = '',
>
> 'table-name' = ''
>
> );
>
> CREATE TABLE `temporary_usage`
>
> (`datepoint` TIMESTAMP,
>
> `appId` VARCHAR ,
>
> `flavor` VARCHAR ,
>
> `applyNum` BIGINT ,
>
> `releaseNum` BIGINT ,
>
> `usedNum` BIGINT ,
>
>PRIMARY KEY (`datepoint`) NOT ENFORCED
>
> )WITH(
>
> 'connector' = 'mysql-cdc',
>
> 'hostname' = '',
>
> 'port' = '',
>
> 'username' = '',
>
> 'password' = '',
>
> 'database-name' = '',
>
> 'table-name' = ''
>
> );
>
> CREATE TABLE `tbl_cce_cluster`
>
> (`clusterId` VARCHAR ,
>
> `region` VARCHAR ,
>
> `flavor` VARCHAR ,
>
> `totalNode` BIGINT ,
>
> `toolName` VARCHAR ,
>
> `appId` VARCHAR ,
>
>PRIMARY KEY (`clusterId`) NOT ENFORCED
>
> )WITH(
>
> 'connector' = 'mysql-cdc',
>
> 'hostname' = '',
>
> 'port' = '3306',
>
> 'username' = '',
>
> 'password' = '',
>
> 'database-name' = '',
>
> 'table-name' = ''
>
> );
>
> ---mysql落地表
>
> CREATE table sink(
>
> code STRING,
>
> name STRING,
>
> usedcnt BIGINT,
>
> `time` TIMESTAMP,
>
> type STRING,
>
> PRIMARY KEY (`time`) NOT ENFORCED
>
> ) with (
>
>'connector' = 'jdbc',
>
>'url' = 'jdbc:mysql: ',
>
>'username' = '',
>
>'password' = '',
>
>'table-name' = 'sink'
>
> );
>
> （因为MySQLCDC似乎不支持在同步时筛选指定内容，所以目前同步后先创建筛选结果的虚拟表，再进行计算，还想请教下是否有更好的办法）
>
> CREATE VIEW rpt
>
> (datepoint,appId,flavor,applyNum,releaseNum,usedNum)
>
> AS
>
> select * from tbl_rpt_app_usage
>
> where datepoint > '2022-02-11 14:54:01'
>
> and appId not in ('aaa')
>
> union all
>
> select * from temporary_usage
>
>
>
> CREATE VIEW cce
>
> (clusterId,region,flavor,totalNode,toolName,appId)
>
> AS
>
> select * from tbl_cce_cluster
>
> where toolName in ('bbb','ccc')
>
>
>
> ---代码逻辑如下：
>
> insert into sink
>
> select code,name,usedcnt,LOCALTIMESTAMP as `time`,type from(
>
> select
>
> info.code,
>
> info.name,
>
> sum(rpt.usedNum) as usedcnt,'online' type
>
> from (
>
> select * from (
>
> select *,ROW_NUMBER() OVER(PARTITION by appId,flavor order by datepoint
> desc) as row_num from rpt/*+ OPTIONS('server-id'='1001-1005') */
>
> )where row_num =1
>
> )rpt
>
> join info
>
> on info.appid=rpt.appId
>
> group by info.code,info.name)
>
> union all
>
> select code,name,usedcnt,LOCALTIMESTAMP as `time`,type from(
>
> select
>
> info.code,
>
> info.name,
>
> sum(totalNode) as usedcnt,'online' type
>
> from
>
> cce/*+ OPTIONS('server-id'='1006-1010') */
>
> join info
>
> on cce.appId=info.appid
>
> group by info.code,info.name)
>
> 我的结果表在的12小时（我设置的过期时间）后，再也没更新过。
>
>
>
> 另外，还想请教一个问题：目前group by算子的落地到数据库的结果只支持update
> 吗？业务期待获取历史数据，目前只能想到每分钟全量同步一次结果表的数据到另一个表里，这样就可以追踪到历史数据，是否还有更好的解决办法呢？
>
>
>
>
>
> 非常感谢您的阅读与解惑！
>
