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Posted to mapreduce-dev@hadoop.apache.org by "Rémy SAISSY (JIRA)" <ji...@apache.org> on 2013/05/22 11:46:20 UTC

[jira] [Created] (MAPREDUCE-5264) FileAlreadyExistsException is assumed to be thrown by FileSystem#mkdirs or FileContext#mkdir in the codebase

Rémy SAISSY created MAPREDUCE-5264:
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             Summary: FileAlreadyExistsException is assumed to be thrown by FileSystem#mkdirs or FileContext#mkdir in the codebase
                 Key: MAPREDUCE-5264
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5264
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 3.0.0, 2.0.5-beta
            Reporter: Rémy SAISSY


According to https://issues.apache.org/jira/browse/HADOOP-9438,
FileSystem#mkdirs and FileContext#mkdir do not throw FileAlreadyExistsException if the directory already exist.

Some places in the mapreduce codebase assumes FileSystem#mkdirs or FileContext#mkdir throw FileAlreadyExistsException.
At least the following files are concerned:
 - YarnChild.java
 - JobHistoryEverntHandler.java
 - HistoryFileManager.java

It would be good to re-review and patch this if needed.

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