Streaming does not checks whether -mapper option is provided or not
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Key: HADOOP-2876
URL: https://issues.apache.org/jira/browse/HADOOP-2876
Project: Hadoop Core
Issue Type: Bug
Reporter: Karam Singh
Priority: Minor
Fix For: 0.17.0
Ran hadoop command as -:
bin/hadoop jar contrib/streaming/hadoop-*-streaming.jar -input in -output out
(Here no mapper is provided using -mapper option).
Stream job will start and map of that job fails.
Streaming should check about the presence of -mapper option and throw proper
error is it not there.
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