[jira] [Resolved] (SPARK-52312) Caching AppendData plan causes data to be inserted twice

["Wenchen Fan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-52312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-52312.
---------------------------------
    Fix Version/s: 4.1.0
       Resolution: Fixed

Issue resolved by pull request 51032
[https://github.com/apache/spark/pull/51032]

> Caching AppendData plan causes data to be inserted twice
> --------------------------------------------------------
>
>                 Key: SPARK-52312
>                 URL: https://issues.apache.org/jira/browse/SPARK-52312
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 4.0.0
>            Reporter: Tom van Bussel
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.1.0
>
>
> We’ve identified an issue where a {{DataFrame}} created from an {{INSERT}} SQL statement and then cached will cause the {{INSERT}} to be executed twice. This happens because the logical plan for the {{INSERT}} ({{{}AppendData{}}}) doesn’t extend the {{IgnoreCachedData}} trait, so it isn’t ignored during caching as expected. As a result, the plan is cached and re-executed. We should fix this by ensuring that plans used by {{INSERT}} all extend the {{IgnoreCachedData}} trait.



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