Steve Loughran created HADOOP-18399:
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Summary: SingleFilePerBlockCache to use LocalDirAllocator for file
allocatoin
Key: HADOOP-18399
URL: https://issues.apache.org/jira/browse/HADOOP-18399
Project: Hadoop Common
Issue Type: Sub-task
Components: fs/s3
Reporter: Steve Loughran
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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