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https://issues.apache.org/jira/browse/HADOOP-18399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran updated HADOOP-18399:
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Fix Version/s: 3.4.0
Resolution: Fixed
Status: Resolved (was: Patch Available)
> S3A Prefetch - SingleFilePerBlockCache to use LocalDirAllocator
> ---------------------------------------------------------------
>
> Key: HADOOP-18399
> URL: https://issues.apache.org/jira/browse/HADOOP-18399
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.0
> Reporter: Steve Loughran
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> prefetching stream's SingleFilePerBlockCache uses Files.tempFile() to
> allocate a temp file.
> it should be using LocalDirAllocator to allocate space from a list of dirs,
> taking a config key to use. for s3a we will use the Constants.BUFFER_DIR
> option, which on yarn deployments is fixed under the env.LOCAL_DIR path, so
> automatically cleaned up on container exit
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