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Posted to dev@hive.apache.org by "Remus Rusanu (JIRA)" <ji...@apache.org> on 2014/05/19 07:07:37 UTC

[jira] [Created] (HIVE-7082) Vectorized parquet reader should create assigners only for the columns it assigns, not for scratch columns

Remus Rusanu created HIVE-7082:
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             Summary: Vectorized parquet reader should create assigners only for the columns it assigns, not for scratch columns
                 Key: HIVE-7082
                 URL: https://issues.apache.org/jira/browse/HIVE-7082
             Project: Hive
          Issue Type: Bug
          Components: Query Processor
    Affects Versions: 0.13.0, 0.14.0
            Reporter: Remus Rusanu
            Assignee: Remus Rusanu
            Priority: Minor


The code in VectorizedParquetRecordReader.next and in VectorColumnAssignFactory.buildAssigners iterates for all columns in the vectorization context trying to build an assigner for it. Scratch columns do not require assigners. Fix is to simply use the writables.length instead of outputBatch.numCols.



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