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https://issues.apache.org/jira/browse/HIVE-21837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Naresh P R reassigned HIVE-21837:
---------------------------------
> MapJoin is throwing exception when selected column is having completely null
> values
> -----------------------------------------------------------------------------------
>
> Key: HIVE-21837
> URL: https://issues.apache.org/jira/browse/HIVE-21837
> Project: Hive
> Issue Type: Bug
> Reporter: Naresh P R
> Assignee: Naresh P R
> Priority: Major
>
> With huge data, below query
> {code:java}
> SELECT
> a.id,
> null
> FROM table a
> JOIN table b ON (a.id = b.id)
> JOIN (SELECT '1234' id, 'deptno' type UNION ALL SELECT '5678' id, 'deptno'
> type) c ON (c.type = a.type){code}
> is throwing below exception.
> {code:java}
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Column vector
> class org.apache.hadoop.hive.ql.exec.vector.VoidColumnVector is not supported!
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorizedBatchUtil.makeLikeColumnVector(VectorizedBatchUtil.java:624)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorizedBatchUtil.makeLike(VectorizedBatchUtil.java:861)
> at
> org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinCommonOperator.commonSetup(VectorMapJoinCommonOperator.java:583)
> at
> org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinGenerateResultOperator.commonSetup(VectorMapJoinGenerateResultOperator.java:128)
> at
> org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinInnerGenerateResultOperator.commonSetup(VectorMapJoinInnerGenerateResultOperator.java:112)
> at
> org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinInnerMultiKeyOperator.process(VectorMapJoinInnerMultiKeyOperator.java:119)
> ... 21 more{code}
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