Kousuke Saruta created MAPREDUCE-5895:
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Summary: 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
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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