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https://issues.apache.org/jira/browse/SPARK-6076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14341386#comment-14341386
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Apache Spark commented on SPARK-6076:
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User 'zsxwing' has created a pull request for this issue:
https://github.com/apache/spark/pull/4827
> Fix a potential OOM issue when StorageLevel is MEMORY_AND_DISK_SER
> ------------------------------------------------------------------
>
> Key: SPARK-6076
> URL: https://issues.apache.org/jira/browse/SPARK-6076
> Project: Spark
> Issue Type: Bug
> Components: Block Manager
> Affects Versions: 1.2.1
> Reporter: Shixiong Zhu
> Priority: Minor
>
> When StorageLevel is MEMORY_AND_DISK_SER, it will copy the content from file
> into memory, then put it into MemoryStore. See:
> https://github.com/apache/spark/blob/dcd1e42d6b6ac08d2c0736bf61a15f515a1f222b/core/src/main/scala/org/apache/spark/storage/BlockManager.scala#L538
> However, if the file is bigger than the free memory, OOM will happen. A
> better approach is testing if there is enough memory. If not, copyForMemory
> should not be created, since this is an option operation.
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