Accessing Cloud Data
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Enabling the Directory Committer in Hadoop

For backwards compatibility, output to S3 defaults to using the original file committer.

To switch to the Directory Committer in Ambari, edit core-site.xml and set the property to directory.


The other values for this option are file, partitioned and magic; file is the original file output committer, which uses file and directory renames to commit output. The partitioned committer is a variant of the directory committer, with different conflict resolution policies. The magic committer is a potentially faster committer, but which should be considered less tested.