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https://issues.apache.org/jira/browse/HIVE-8184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pengcheng Xiong updated HIVE-8184:
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Attachment: HIVE-8184.2.patch
fix null pointer exception
> inconsistence between colList and columnExprMap when ConstantPropagate is
> applied to subquery
> ----------------------------------------------------------------------------------------------
>
> Key: HIVE-8184
> URL: https://issues.apache.org/jira/browse/HIVE-8184
> Project: Hive
> Issue Type: Improvement
> Reporter: Pengcheng Xiong
> Priority: Minor
> Attachments: HIVE-8184.1.patch, HIVE-8184.2.patch
>
>
> Query like
> select * from (select a.key as ak, a.value as av, b.key as bk, b.value as bv
> from src a join src1 b where a.key = '428' ) c;
> will fail as
> FAILED: Execution Error, return code 2 from
> org.apache.hadoop.hive.ql.exec.mr.MapRedTask
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