Provide more hooks into OutputFormat/RecordWriter events
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Key: HADOOP-5975
URL: https://issues.apache.org/jira/browse/HADOOP-5975
Project: Hadoop Core
Issue Type: Improvement
Affects Versions: 0.18.3
Reporter: Nathan Marz
OutputFormat could be made a lot more flexible if more hooks were added for
various events that occur during a job. In particular, I would like to see:
1. RecordWriter#cleanup : called whether the task succeeds, fails, or gets
killed. I have an OutputFormat which writes to local disk but has no way of
cleaning up on failure or getting killed.
2. OutputFormat#close - Once the job has completely run, I sometimes need the
OutputFormat to do some cleanup or additional logic to finalize the output.
Right now I have to stuff this logic into Cascading Taps but things would work
better and be more flexible if I could put it in the OutputFormat itself.
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