mapjoin followed by another mapjoin should be performed in a single query
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Key: HIVE-1246
URL: https://issues.apache.org/jira/browse/HIVE-1246
Project: Hadoop Hive
Issue Type: Improvement
Components: Query Processor
Reporter: Namit Jain
Assignee: He Yongqiang
Fix For: 0.6.0
A query like:
select /*+ MAPJOIN(c) */ ..
from
(select /*+ MAPJOIN(b) */ ..
from a join b on k1) subq1
join
c
on k2
should be performed in a single map-only job
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