Mohit Sabharwal created HIVE-13057:
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Summary: Remove duplicate copies of TableDesc property values in
PartitionDesc
Key: HIVE-13057
URL: https://issues.apache.org/jira/browse/HIVE-13057
Project: Hive
Issue Type: Bug
Reporter: Mohit Sabharwal
Assignee: Mohit Sabharwal
For a partitioned table, each PartitionDesc has a copy of corresponding
TableDesc.
While TableDesc is mutable and hence cannot be interned, it's property values
can be.
For a simple select on a table with 100K partitions, this cut total number of
String instances by ~65%.
Most replicated strings were location, serde, input/output format, column,
types, table name, etc.
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