mapjoin_subquery dump two small table to the same file
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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: Critical
Fix For: 0.8.0
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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