Sergey Shelukhin created HIVE-5171:
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Summary: metastore server can cache pruning results across queries
Key: HIVE-5171
URL: https://issues.apache.org/jira/browse/HIVE-5171
Project: Hive
Issue Type: Improvement
Reporter: Sergey Shelukhin
Assignee: Sergey Shelukhin
Partition pruning results are cached during a query (SemanticAnalyzer and
ParseContext are the scope).
We could also cache them between queries in MetaStore, which would be
especially useful if metastore server is remote and thus long-lived/shared
between clients.
It may be more complex than it seems due to OOM potential. Also the key would
need to be changed since the same expression string that is currently used may
mean different things for different queries.
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