Mit Desai created YARN-2240:

             Summary: yarn logs can get corrupted if the aggregator does not 
have permissions to the log file it tries to read
                 Key: YARN-2240
             Project: Hadoop YARN
          Issue Type: Bug
    Affects Versions: 2.5.0
            Reporter: Mit Desai

When the log aggregator is aggregating the logs, it writes the file length 
first. Then tries to open the log file and if it does not have permission to do 
that, it ends up just writing an error message to the aggregated logs.

The mismatch between the file length and the actual length here makes the 
aggregated logs corrupted.

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