Review Request: HIVE-1931: Improve the implementation of the METASTORE_CACHE_PINOBJTYPES config

[Mac Yang]

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https://reviews.apache.org/r/360/
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Review request for hive.


Summary
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Review request for HIVE-1931


This addresses bug HIVE-1931.
    https://issues.apache.org/jira/browse/HIVE-1931


Diffs
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http://svn.apache.org/repos/asf/hive/trunk/metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java
 1063913 

Diff: https://reviews.apache.org/r/360/diff


Testing
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Thanks,

Mac