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