Details
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Improvement
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Status: Closed
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Major
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Resolution: Fixed
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None
Description
HIVE-19824 have fixed the estimations; but it calculated for the "optimized" impl; the "fast" one has a little bit bigger footprint.
It also seems like fast is a bit overestimated at runtime...that should be also taken care of.
numkeys | implementation | compiler estimation | runtime estimation | runtime measurement | ce / rm | re / rm |
25M | FAST | 1168435456 | 2189433712 | 1513584984 | .77 | 1.44 |
25M | OPTIMIZED | 1168435456 | 1191203764 | 1168439664 | 100% | 1.01 |
Attachments
Attachments
Issue Links
- relates to
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HIVE-19824 Improve online datasize estimations for MapJoins
- Closed