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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/07/30 07:26:01 UTC
[jira] [Work logged] (HIVE-23952) Reuse VectorAggregationBuffer to
reduce GC pressure in VectorGroupByOperator
[ https://issues.apache.org/jira/browse/HIVE-23952?focusedWorklogId=464278&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-464278 ]
ASF GitHub Bot logged work on HIVE-23952:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Jul/20 07:25
Start Date: 30/Jul/20 07:25
Worklog Time Spent: 10m
Work Description: mustafaiman opened a new pull request #1337:
URL: https://github.com/apache/hive/pull/1337
Change-Id: If398aba0130fffff28c17d18340c20ba681c278f
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Issue Time Tracking
-------------------
Worklog Id: (was: 464278)
Remaining Estimate: 0h
Time Spent: 10m
> Reuse VectorAggregationBuffer to reduce GC pressure in VectorGroupByOperator
> ----------------------------------------------------------------------------
>
> Key: HIVE-23952
> URL: https://issues.apache.org/jira/browse/HIVE-23952
> Project: Hive
> Issue Type: Bug
> Reporter: Rajesh Balamohan
> Assignee: Mustafa Iman
> Priority: Major
> Attachments: Screenshot 2020-07-30 at 7.38.13 AM.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> !Screenshot 2020-07-30 at 7.38.13 AM.png|width=1171,height=892!
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorGroupByOperator.java]
> {code:java}
> aggregationBuffer = allocateAggregationBuffer(); {code}
> Flushed out aggregation buffers could be reused instead of allocating everytime here, to reduce GC pressure.
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