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Posted to dev@hive.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2017/08/09 22:24:00 UTC

[jira] [Created] (HIVE-17282) OrcRawRecordMerger collapseEvents mode should not produce delete events

Eugene Koifman created HIVE-17282:
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             Summary: OrcRawRecordMerger collapseEvents mode should not produce delete events
                 Key: HIVE-17282
                 URL: https://issues.apache.org/jira/browse/HIVE-17282
             Project: Hive
          Issue Type: Improvement
          Components: Transactions
    Affects Versions: 3.0.0
            Reporter: Eugene Koifman
            Priority: Minor


it made sense before HIVE-17089 where we had multiple versions of the same row and this mode produce the latest one.
Now outputting delete events is only need for compaction and _VectorizedOrcAcidRowBatchReader_.  The latter only reads delete_delta and OrcInputFormat skips all delete events from _OrcRawRecordMerger_



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