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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/07/14 04:36:00 UTC

[jira] [Updated] (HIVE-23843) Improve key evictions in VectorGroupByOperator

     [ https://issues.apache.org/jira/browse/HIVE-23843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HIVE-23843:
----------------------------------
    Labels: pull-request-available  (was: )

> 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: 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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