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https://issues.apache.org/jira/browse/SPARK-43911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuming Wang resolved SPARK-43911.
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Fix Version/s: 3.5.0
3.4.1
Resolution: Fixed
Issue resolved by pull request 41419
[https://github.com/apache/spark/pull/41419]
> Use toSet to deduplicate the iterator data to prevent the creation of large
> Array
> ---------------------------------------------------------------------------------
>
> Key: SPARK-43911
> URL: https://issues.apache.org/jira/browse/SPARK-43911
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: mcdull_zhang
> Assignee: mcdull_zhang
> Priority: Minor
> Fix For: 3.5.0, 3.4.1
>
>
> When SubqueryBroadcastExec reuses the keys of Broadcast HashedRelation for
> dynamic partition pruning, it will put all the keys in an Array, and then
> call the distinct of the Array to remove the duplicates.
> In general, Broadcast HashedRelation may have many rows, and the repetition
> rate of this key is high. Doing so will cause this Array to occupy a large
> amount of memory (and this memory is not managed by MemoryManager), which may
> trigger OOM.
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