Siddharth Seth created HIVE-13250:
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Summary: Compute predicate conversions on the client, instead of
per row group
Key: HIVE-13250
URL: https://issues.apache.org/jira/browse/HIVE-13250
Project: Hive
Issue Type: Improvement
Reporter: Siddharth Seth
When running a query for the form
select count from table where ts_field = "2016-01-23 00:00:00";
or
select count from table where ts_field = 1453507200
ts_field is of type TIMESTAMP
The predicate is converted to whatever format is appropriate for TIMESTAMP
processing on each and every row group.
It would be far more efficient to process this once on the client - or even
once per task.
The same applies to ORC splt elimination as well - this is applied for each
stripe.
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