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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/09/01 15:11:00 UTC

[jira] [Assigned] (SPARK-40306) Support more than Integer.MAX_VALUE of the same join key

     [ https://issues.apache.org/jira/browse/SPARK-40306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-40306:
------------------------------------

    Assignee:     (was: Apache Spark)

> Support more than Integer.MAX_VALUE of the same join key
> --------------------------------------------------------
>
>                 Key: SPARK-40306
>                 URL: https://issues.apache.org/jira/browse/SPARK-40306
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.3.0
>            Reporter: Wan Kun
>            Priority: Major
>         Attachments: image-2022-09-01-23-02-15-955.png
>
>
> For SMJ, the number of the same join key records of the right table is greater than Integer.MAX_VALUE, the result will be incorrect. 
> Before SMJ JOIN, we will put the records of the same join key into the ExternalAppendOnlyUnsafeRowArray. ExternalAppendOnlyUnsafeRowArray.numRows overflow may cause OOM. During SMJ JOIN, SpillableArrayIterator.startIndex overflow may cause incorrect result.
> For example, one of our production table:
> !image-2022-09-01-23-02-15-955.png!



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