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https://issues.apache.org/jira/browse/SPARK-11792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17447963#comment-17447963
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Apache Spark commented on SPARK-11792:
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User 'pan3793' has created a pull request for this issue:
https://github.com/apache/spark/pull/34692
> SizeEstimator cannot provide a good size estimation of UnsafeHashedRelations
> ----------------------------------------------------------------------------
>
> Key: SPARK-11792
> URL: https://issues.apache.org/jira/browse/SPARK-11792
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Yin Huai
> Assignee: Yin Huai
> Priority: Blocker
> Fix For: 1.6.0
>
>
> At the executor side, SizeEstimator sees that an UnsafeHashedRelation has a
> huge graph and produce a significant larger estimated size (compared with the
> size of data stored in the UnsafeHashedRelation). So, the memory manger will
> "think" we run out of memory after several broad cast joins.
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