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Posted to dev@flink.apache.org by "zhengjiewen (Jira)" <ji...@apache.org> on 2021/06/07 07:24:00 UTC

[jira] [Created] (FLINK-22897) FlinkSQL1.12 Sink to Hive with diffrent parallelism will due to produce many small files

zhengjiewen created FLINK-22897:
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             Summary: FlinkSQL1.12 Sink to Hive with diffrent parallelism will due to produce many small files
                 Key: FLINK-22897
                 URL: https://issues.apache.org/jira/browse/FLINK-22897
             Project: Flink
          Issue Type: Improvement
    Affects Versions: 1.12.1
            Reporter: zhengjiewen


I try to use flink sql in batch mode, to sink data into hive partition table, here is the sql:

 
{code:java}
//代码占位符
{code}
INSERT OVERWRTITE 【targetTable】SELECT 【field】FROM 【sourceTable】;

 

 

And I found that when the parallelism of the sink operator is different from that of the operator before it, a large number of small files will be generated. But this is not the case when the parallelism is the same.



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