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https://issues.apache.org/jira/browse/HIVE-23843?focusedWorklogId=461375&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-461375
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ASF GitHub Bot logged work on HIVE-23843:
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Author: ASF GitHub Bot
Created on: 21/Jul/20 02:11
Start Date: 21/Jul/20 02:11
Worklog Time Spent: 10m
Work Description: rbalamohan commented on pull request #1250:
URL: https://github.com/apache/hive/pull/1250#issuecomment-661564023
Simplified and revised the patch. Q67 @ 10 TB scale shows good improvement
(2050+ seconds --> 1500+ seconds) in internal cluster.
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Issue Time Tracking
-------------------
Worklog Id: (was: 461375)
Time Spent: 1h 10m (was: 1h)
> Improve key evictions in VectorGroupByOperator
> ----------------------------------------------
>
> Key: HIVE-23843
> URL: https://issues.apache.org/jira/browse/HIVE-23843
> Project: Hive
> Issue Type: Improvement
> Components: Hive
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Keys in {{mapKeysAggregationBuffers}} are evicted in random order. Tasks also
> get into GC issues when multiple keys are involved in groupbys. It would be
> good to provide an option to have LRU based eviction for
> mapKeysAggregationBuffers.
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