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https://reviews.apache.org/r/11427/
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Review request for hive.
Description
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The VectorHashKeyValue output for int key type was broken, the M/R expects the type emitted to match the type reduced. By using a BinaryWriter with a LongWritable instead of a IntWritable the value was effectively corrupted.
This addresses bug HIVE-4612.
    https://issues.apache.org/jira/browse/HIVE-4612
Diffs
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  ql/src/java/org/apache/hadoop/hive/ql/exec/VectorHashKeyWrapperBatch.java c23614c
  ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorizationContext.java 1ef4955

Diff: https://reviews.apache.org/r/11427/diff/
Testing
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manual test query
Thanks,

Remus Rusanu