Prabhu Joseph created YARN-4299:

             Summary: Distcp fails even if ignoreFailures option is set
                 Key: YARN-4299
             Project: Hadoop YARN
          Issue Type: Bug
    Affects Versions: 2.7.0
            Reporter: Prabhu Joseph

hadoop distcp fails even if ignoreFailures option is set using -i option.

When an IOException is thrown from RetriableFileCopyCommand, the hadoopFailures 
method in CopyMapper does not honor ignoreFailures.

    if (ignoreFailures && exception.getCause() instanceof 

OR should be used above.

And there is one more bug, when i wrap IOException with CopyReadException, the 
exception.getCause is still IOException.

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