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https://issues.apache.org/jira/browse/SPARK-35754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17362860#comment-17362860
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Apache Spark commented on SPARK-35754:
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User 'q2w' has created a pull request for this issue:
https://github.com/apache/spark/pull/32902

> Put blocks only on disk while migrating RDD cached data
> -------------------------------------------------------
>
>                 Key: SPARK-35754
>                 URL: https://issues.apache.org/jira/browse/SPARK-35754
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Spark Core
>    Affects Versions: 3.1.2
>            Reporter: abhishek kumar tiwari
>            Priority: Major
>
> While migrating cached data we might drop already cached blocks if enough 
> memory is not available on the peer block manager.
> We should add a conf to put migrating blocks only on disk



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