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Posted to dev@hive.apache.org by "Rajesh Balamohan (JIRA)" <ji...@apache.org> on 2016/11/30 06:37:59 UTC

[jira] [Created] (HIVE-15315) Query compilation: PartitionDesc can reduce the number of table metadata calls

Rajesh Balamohan created HIVE-15315:
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             Summary: Query compilation: PartitionDesc can reduce the number of table metadata calls
                 Key: HIVE-15315
                 URL: https://issues.apache.org/jira/browse/HIVE-15315
             Project: Hive
          Issue Type: Improvement
          Components: Metastore
            Reporter: Rajesh Balamohan
            Assignee: Rajesh Balamohan
            Priority: Minor


https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/plan/PartitionDesc.java#L88

When compiling the query with partition dataset, partitiondesc ends getting table metadata from metastore lot many times. This can be optimized to reduce the number of hits to the database.



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