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Posted to dev@hive.apache.org by "Vaibhav Gumashta (JIRA)" <ji...@apache.org> on 2019/05/20 20:30:00 UTC

[jira] [Created] (HIVE-21757) ACID: use a new write id for compaction's output instead of the visibility id

Vaibhav Gumashta created HIVE-21757:
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             Summary: ACID: use a new write id for compaction's output instead of the visibility id
                 Key: HIVE-21757
                 URL: https://issues.apache.org/jira/browse/HIVE-21757
             Project: Hive
          Issue Type: Bug
          Components: Transactions
    Affects Versions: 4.0.0
            Reporter: Vaibhav Gumashta


HIVE-20823 added support for running compaction within a transaction. To control the visibility of the output directory, it uses base_writeId_visibilityId, where visibilityId is the transaction id of the transaction that the compactor ran in. Perhaps we can keep using the base_writeId format, by allocating a new writeId for the compactor and creating the new base/delta with that.



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