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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-8844) Choose a persisent policy for RDD caching [Spark Branch]
Date Wed, 12 Nov 2014 19:06:33 GMT
Xuefu Zhang created HIVE-8844:
---------------------------------

             Summary: Choose a persisent policy for RDD caching [Spark Branch]
                 Key: HIVE-8844
                 URL: https://issues.apache.org/jira/browse/HIVE-8844
             Project: Hive
          Issue Type: Sub-task
          Components: Spark
            Reporter: Xuefu Zhang


RDD caching is used for performance reasons in some multi-insert queries. Currently, we call
RDD.cache(), which indicates a persistency policy of using memory only. We should choose a
better policy. I think memory+disk will be good enough. Refer to RDD.persist() for more information.



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