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Posted to dev@hive.apache.org by "daxingyu (JIRA)" <ji...@apache.org> on 2013/11/28 10:39:44 UTC

[jira] [Created] (HIVE-5908) Use map-join hint to cache intermediate result

daxingyu created HIVE-5908:
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             Summary: Use map-join hint to cache intermediate result
                 Key: HIVE-5908
                 URL: https://issues.apache.org/jira/browse/HIVE-5908
             Project: Hive
          Issue Type: New Feature
          Components: Query Processor
            Reporter: daxingyu
            Priority: Minor
             Fix For: 0.13.0


There are very complicated query exists in our project , especially some intermediate result can be very small . But hive will treat these result as a part  of mapreduce job , which is very costly.

So i am proposed to use map-join hint to cache these small result, and speed up the hive job executions. 



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