Steve Loughran created MAPREDUCE-5306:
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Summary: HistoryFileManager.mkdir() doesn't handle case where dest
path exists -and is a file
Key: MAPREDUCE-5306
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5306
Project: Hadoop Map/Reduce
Issue Type: Bug
Reporter: Steve Loughran
Priority: Minor
The {{HistoryFileManager.mkdir()}} code handles the path existing simply by
logging that the dir exists, and returning for everything else to work.
There's a big assumption there: that the path resolves to a directory. A check
needs to be made that this assumption is valid -throwing some IOE subclass if
it's just a file
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