[jira] [Created] (HADOOP-15240) ITestS3AEmptyDirectory.testParallelJobsToAdjacentPaths failure, FileAlreadyExistsException

["Steve Loughran (JIRA)" <ji...@apache.org>]

Steve Loughran created HADOOP-15240:
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             Summary: ITestS3AEmptyDirectory.testParallelJobsToAdjacentPaths failure, FileAlreadyExistsException
                 Key: HADOOP-15240
                 URL: https://issues.apache.org/jira/browse/HADOOP-15240
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3, test
    Affects Versions: 3.1.0, 3.2.0
            Reporter: Steve Loughran


Transient {{ITestS3AEmptyDirectory.testParallelJobsToAdjacentPaths}} failure; {{FileAlreadyExistsException}} during the setup phase of the test -writing out the work to
{{org.apache.hadoop.fs.FileAlreadyExistsException: File already exists: file:/Users/stevel/Projects/hadoop-trunk/hadoop-tools/hadoop-aws/target/build/test:fork-0002/job_200707120153_0002/_temporary/1/_temporary/attempt_200707120153_0002_m_000000_0/part-m-00000}}

There's something wrong here as that path is a FileOutputCommitter workingDir path, not a partitioned committer. 

Hypotheses: some filesystem caching in the test run is stopping the right committer from being picked up.

It's possible that this has been happening for a while, but only some cleanup failure from a previous run has caught it.

Proposed
* add checks in the AbstractIT test to verify the right committer is picked up in the task context by probing for the working dir: file:// for staging, */__magic/* for magic.
* and verify that success file is there.








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