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https://issues.apache.org/jira/browse/MAPREDUCE-5895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kousuke Saruta updated MAPREDUCE-5895:
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Summary: FileAlreadyExistsException was thrown : Temporary Index File can
not be cleaned up because OutputStream doesn't close properly (was: Temporary
Index File can not be cleaned up because OutputStream doesn't close properly)
> FileAlreadyExistsException was thrown : Temporary Index File can not be
> cleaned up because OutputStream doesn't close properly
> ------------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5895
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5895
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client
> Affects Versions: 3.0.0
> Reporter: Kousuke Saruta
> Attachments: MAPREDUCE-5895.patch
>
>
> In TaskLog.java, Temporary Index File is created by following code.
> {code}
> BufferedOutputStream bos =
> new BufferedOutputStream(
> SecureIOUtils.createForWrite(tmpIndexFile, 0644));
> DataOutputStream dos = new DataOutputStream(bos);
> {code}
> The code is surrounded by try-finally so if some Exception/ERROR is thrown
> between constructing bos and dos, temporary file is not cleaned up.
> I met the situation that when a thread ran, OOM was thrown after bos created
> and temporary file is not cleaned up. At different time, another thread
> executed same logic and fail because of FileAlreadyExistsException.
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