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Posted to dev@hive.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2017/10/26 23:11:02 UTC

[jira] [Created] (HIVE-17915) Enable VectorizedOrcAcidRowBatchReader to be used with LLAP IO elevator over original acid files

Eugene Koifman created HIVE-17915:
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             Summary: Enable VectorizedOrcAcidRowBatchReader to be used with LLAP IO elevator over original acid files
                 Key: HIVE-17915
                 URL: https://issues.apache.org/jira/browse/HIVE-17915
             Project: Hive
          Issue Type: Sub-task
          Components: Transactions
    Affects Versions: 3.0.0
            Reporter: Eugene Koifman
            Priority: Minor


Reading "original" acid files requires using _org.apache.hadoop.hive.ql.io.orc.RecordReader.getRowNumber()_ in __VectorizedOrcAcidRowBatchReader_
This API is not available on the reader that _LlapRecordReader_ provides so
_VectorizedOrcAcidRowBatchReader.canUseLlapForAcid()_ is used to disable LLAP IO in some corner cases.

It would be better if getRowNumber() was available for performance as well as simpler logic in the code.

This needs HIVE-17458 to be committed to make sense.

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



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