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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/02/25 07:25:00 UTC

[jira] [Assigned] (SPARK-23405) The task will hang up when a small table left semi join a big table

     [ https://issues.apache.org/jira/browse/SPARK-23405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-23405:
------------------------------------

    Assignee:     (was: Apache Spark)

> The task will hang up when a small table left semi join a big table
> -------------------------------------------------------------------
>
>                 Key: SPARK-23405
>                 URL: https://issues.apache.org/jira/browse/SPARK-23405
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.2.1
>            Reporter: KaiXinXIaoLei
>            Priority: Major
>         Attachments: SQL.png, taskhang up.png
>
>
> I run a sql: `select ls.cs_order_number from ls left semi join catalog_sales cs on ls.cs_order_number = cs.cs_order_number`, The `ls` table is a small table ,and the number is one. The `catalog_sales` table is a big table,  and the number is 10 billion. The task will be hang up:
> !taskhang up.png!
>  And the sql page is :
> !SQL.png!



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