Details
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Bug
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Status: Closed
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Trivial
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Resolution: Fixed
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None
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None
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None
Description
Queries with limit clause (with reasonable number), for example
select * from src order by key limit 10;
makes operator tree,
TS-SEL-RS-EXT-LIMIT-FS
But LIMIT can be partially calculated in RS, reducing size of shuffling.
TS-SEL-RS(TOP-N)-EXT-LIMIT-FS
Attachments
Attachments
Issue Links
- is related to
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HIVE-12329 Turn on limit pushdown optimization by default
- Closed
- relates to
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HIVE-5093 Use a combiner for LIMIT with GROUP BY and ORDER BY operators
- Resolved
- supercedes
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HIVE-5093 Use a combiner for LIMIT with GROUP BY and ORDER BY operators
- Resolved