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Posted to commits@hudi.apache.org by "zhangminglei (Jira)" <ji...@apache.org> on 2021/05/20 15:08:00 UTC

[jira] [Created] (HUDI-1918) Incorrect keyby field would cause serious data skew

zhangminglei created HUDI-1918:
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             Summary: Incorrect keyby field would cause serious data skew
                 Key: HUDI-1918
                 URL: https://issues.apache.org/jira/browse/HUDI-1918
             Project: Apache Hudi
          Issue Type: Bug
          Components: Flink Integration
            Reporter: zhangminglei
            Assignee: zhangminglei


The code (https://github.com/apache/hudi/blob/master/hudi-flink/src/main/java/org/apache/hudi/streamer/HoodieFlinkStreamer.java#L92), in the actual data warehouse, partition path is most based on log_date or log_hour, so keyBy (HoodieRecord: :getPartitionPath) that would cause serious data skew.

we can actually shuffle data by record key here, just like the pipeline in HoodieTableSink.



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