[jira] [Commented] (SPARK-32464) Support skew handling on join that has one side with no query stage

2020-07-27 Thread Apache Spark (Jira)


[ 
https://issues.apache.org/jira/browse/SPARK-32464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17166072#comment-17166072
 ] 

Apache Spark commented on SPARK-32464:
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User 'wangshisan' has created a pull request for this issue:
https://github.com/apache/spark/pull/29266

> Support skew handling on join that has one side with no query stage
> ---
>
> Key: SPARK-32464
> URL: https://issues.apache.org/jira/browse/SPARK-32464
> Project: Spark
>  Issue Type: Improvement
>  Components: SQL
>Affects Versions: 3.0.0
>Reporter: Wang, Gang
>Priority: Major
>
> In our production environment, there are many bucket tables, which are used 
> to join with other tables. And there are some skewed joins now and then. 
> While, in current implementation, the skew join handling can only applied 
> when both sides of a SMJ are QueryStages. So skew join handling is not able 
> to deal with such cases.



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[jira] [Commented] (SPARK-32464) Support skew handling on join that has one side with no query stage

2020-07-27 Thread Wang, Gang (Jira)


[ 
https://issues.apache.org/jira/browse/SPARK-32464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17166071#comment-17166071
 ] 

Wang, Gang commented on SPARK-32464:


A PRĀ [https://github.com/apache/spark/pull/29266]

> Support skew handling on join that has one side with no query stage
> ---
>
> Key: SPARK-32464
> URL: https://issues.apache.org/jira/browse/SPARK-32464
> Project: Spark
>  Issue Type: Improvement
>  Components: SQL
>Affects Versions: 3.0.0
>Reporter: Wang, Gang
>Priority: Major
>
> In our production environment, there are many bucket tables, which are used 
> to join with other tables. And there are some skewed joins now and then. 
> While, in current implementation, the skew join handling can only applied 
> when both sides of a SMJ are QueryStages. So skew join handling is not able 
> to deal with such cases.



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