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https://issues.apache.org/jira/browse/HIVE-2466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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binlijin updated HIVE-2466:
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Status: Patch Available (was: Open)
> mapjoin_subquery dump small table (mapjoin table) to the same file
> -------------------------------------------------------------------
>
> Key: HIVE-2466
> URL: https://issues.apache.org/jira/browse/HIVE-2466
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.7.1
> Reporter: binlijin
> Priority: Blocker
> Attachments: hive-2466.1.patch
>
>
> in mapjoin_subquery.q there is a query：
> SELECT /*+ MAPJOIN(z) */ subq.key1, z.value
> FROM
> (SELECT /*+ MAPJOIN(x) */ x.key as key1, x.value as value1, y.key as key2,
> y.value as value2
> FROM src1 x JOIN src y ON (x.key = y.key)) subq
> JOIN srcpart z ON (subq.key1 = z.key and z.ds='2008-04-08' and z.hr=11);
> when dump x and z to a local file,there all dump to the same file, so we lost
> the data of x
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