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https://issues.apache.org/jira/browse/HIVE-24532?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HIVE-24532:
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Labels: pull-request-available (was: )
> Reduce sink vectorization mixes column types
> --------------------------------------------
>
> Key: HIVE-24532
> URL: https://issues.apache.org/jira/browse/HIVE-24532
> Project: Hive
> Issue Type: Bug
> Reporter: Mustafa İman
> Assignee: Mustafa İman
> Priority: Major
> Labels: pull-request-available
> Attachments: castexception.txt, explainplan.txt
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> I do insert overwrite select on a partitioned table. Partition column is
> specified dynamically from select query. "ceil" function is applied on a
> string column to specify partition for each row. Reduce sink gets confused
> about the type of partition column. It leads to following cast exception in
> runtime:
> {code:java}
> Caused by: java.lang.ClassCastException:
> org.apache.hadoop.hive.ql.exec.vector.LongColumnVector cannot be cast to
> org.apache.hadoop.hive.ql.exec.vector.BytesColumnVector
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorSerializeRow.serializePrimitiveWrite(VectorSerializeRow.java:452)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorSerializeRow.serializeWrite(VectorSerializeRow.java:279)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorSerializeRow.serializeWrite(VectorSerializeRow.java:258)
> at
> org.apache.hadoop.hive.ql.exec.vector.reducesink.VectorReduceSinkObjectHashOperator.processKey(VectorReduceSinkObjectHashOperator.java:305)
> ... 28 more
> {code}
> The problem is reproducible by running mvn test
> -Dtest=TestMiniLlapLocalCliDriver -Dqfile=insert0.q with "set
> hive.stats.autogather=false". The additional config option causes insert
> statements to be vectorized so the vectorization bug appears.
> insert0.q:
> [https://github.com/apache/hive/blob/fb046c77257d648d0ee232356bdf665772b28bdd/ql/src/test/queries/clientpositive/insert0.q]
>
>
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