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Hive, mail # user - What is "emptyFile" doing in my input splits?

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What is "emptyFile" doing in my input splits?
James Kebinger 2013-03-12, 03:52
Following up my previous email about my SerDe not working when it
encounters Text it should be encountering, I noticed a difference in the
input splits of tasks where the SerdeFailed and those where it succeeds:
the failure cases have this mysterious "emptyFile".

How can I make emptyFile take a hike?

2013-03-11 23:43:48,859 [main] INFO  org.apache.hadoop.mapred.MapTask
- Processing split: