Gary Li created HUDI-2128:
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             Summary: Refactor Flink MOR write in a streaming way
                 Key: HUDI-2128
                 URL: https://issues.apache.org/jira/browse/HUDI-2128
             Project: Apache Hudi
          Issue Type: Improvement
            Reporter: Gary Li
            Assignee: Gary Li


Currently, we do the actual write during the snapshot and pass a 
List<HoodieRecord> to the WriteHandle. This will make the snapshot operation 
and causing checkpoint timeout sometimes. We need to refactor the handle in a 
streaming fashion.

To append records to the WriteHandle during the processElement stage and only 
flush to the disk during the checkpoint.



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