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https://issues.apache.org/jira/browse/SPARK-3018?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-3018.
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Resolution: Fixed
Fix Version/s: 1.2.0
> Release all ManagedBuffers upon task completion/failure
> -------------------------------------------------------
>
> Key: SPARK-3018
> URL: https://issues.apache.org/jira/browse/SPARK-3018
> Project: Spark
> Issue Type: Sub-task
> Components: Shuffle, Spark Core
> Reporter: Reynold Xin
> Assignee: Reynold Xin
> Fix For: 1.2.0
>
>
> BlockFetcherIterator retains ManagedBuffers returned by
> BlockClient.fetchBlocks. Those buffers are released when the iterators are
> traversed fully. In the case of task failures or completion without
> exhausting the iterator, this could lead to memory leak.
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