Hadoop Streaming shoulf fail if user process exits with non-zero exit code
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Key: HADOOP-3303
URL: https://issues.apache.org/jira/browse/HADOOP-3303
Project: Hadoop Core
Issue Type: Bug
Components: contrib/streaming
Reporter: Zheng Shao
Assignee: Zheng Shao
Hadoop streaming quietly ignores the user process exit code. This is extremely
dangerous because the user won't notice the problem while the output data is
likely to be corrupted or incomplete.
User process may have read all input data into input buffer, and then finds a
problem in the input data, and exit with an error code and hopes that hadoop
streaming can capture that.
The current hadoop streaming just put this exit code into a log file and
ignores it.
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