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Posted to gitbox@hive.apache.org by GitBox <gi...@apache.org> on 2021/02/16 08:42:30 UTC
[GitHub] [hive] rbalamohan opened a new pull request #1980: Hive 24764 1
rbalamohan opened a new pull request #1980:
URL: https://github.com/apache/hive/pull/1980
https://issues.apache.org/jira/browse/HIVE-24764
insert overwrite on a partition resets row count stats in other partitions. This causes partitions to return PARTIAL value and in some cases, it ends up generating suboptimal plan.
What changes were proposed in this pull request?
FSStatsAggregator::aggregateStats should return the value when the partitions are present in its statslist. Otherwise, it should return empty or null value. This would prevent stats from being overwritten in BasicStatsTask::updateStats for other partitions during 'insert overwrite' operation.
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[GitHub] [hive] rbalamohan commented on pull request #1980: Hive 24764: insert overwrite on a partition resets row count stats in other partitions
Posted by GitBox <gi...@apache.org>.
rbalamohan commented on pull request #1980:
URL: https://github.com/apache/hive/pull/1980#issuecomment-783123814
Thanks @ashutoshc for the review.
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[GitHub] [hive] ashutoshc commented on pull request #1980: Hive 24764: insert overwrite on a partition resets row count stats in other partitions
Posted by GitBox <gi...@apache.org>.
ashutoshc commented on pull request #1980:
URL: https://github.com/apache/hive/pull/1980#issuecomment-783090481
+1 LGTM
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[GitHub] [hive] rbalamohan merged pull request #1980: Hive 24764: insert overwrite on a partition resets row count stats in other partitions
Posted by GitBox <gi...@apache.org>.
rbalamohan merged pull request #1980:
URL: https://github.com/apache/hive/pull/1980
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