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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/06/05 15:52:00 UTC

[jira] [Work logged] (HIVE-14160) Reduce-task costs a long time to finish on the condition that the certain sql "select a,distinct(b) group by a" has been executed on the data which has skew distribution

     [ https://issues.apache.org/jira/browse/HIVE-14160?focusedWorklogId=441890&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-441890 ]

ASF GitHub Bot logged work on HIVE-14160:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 05/Jun/20 15:51
            Start Date: 05/Jun/20 15:51
    Worklog Time Spent: 10m 
      Work Description: belugabehr closed pull request #85:
URL: https://github.com/apache/hive/pull/85


   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 441890)
    Time Spent: 20m  (was: 10m)

> Reduce-task costs a long time to finish on the condition that the certain sql "select a,distinct(b) group by a" has been executed on the data which has skew distribution
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-14160
>                 URL: https://issues.apache.org/jira/browse/HIVE-14160
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 1.1.0
>            Reporter: marymwu
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Reduce-task costs a long time to finish on the condition that the certain sql "select a,distinct(b) group by a" has been executed on the data which has skew distribution
> data scale: 64G



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