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Posted to dev@hive.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2017/10/30 22:09:02 UTC

[jira] [Created] (HIVE-17944) OrcSplit.canUseLlapIo() disables LLAP IO for non-vectorized acid reads

Eugene Koifman created HIVE-17944:
-------------------------------------

             Summary: OrcSplit.canUseLlapIo() disables LLAP IO for non-vectorized acid reads
                 Key: HIVE-17944
                 URL: https://issues.apache.org/jira/browse/HIVE-17944
             Project: Hive
          Issue Type: Sub-task
          Components: llap, Transactions
    Affects Versions: 3.0.0
            Reporter: Eugene Koifman


As of HIVE-17458, the logic for Acid reads is enable LLAP IO for vectorized read if VectorizedOrcAcidRowBatchReader can handle it.

and disable it for any non-vectorized acid read.  This last part is on par with HIVE-12631.
The reason is that LlapRecordReader creates VectorizedOrcAcidRowBatchReader for acid + vectorization, but doesn't create any Acid aware reader w/o vectorization.

cc [~sershe], [~teddy.choi]

 



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