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From Rémy SAISSY (JIRA) <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-5264) FileAlreadyExistsException is assumed to be thrown by FileSystem#mkdirs or FileContext#mkdir in the codebase
Date Wed, 22 May 2013 09:46:20 GMT
Rémy SAISSY created MAPREDUCE-5264:
--------------------------------------

             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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