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From "Peeyush Bishnoi (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-1068) In hadoop-0.20.0 streaming job do not throw proper verbose error message if file is not present
Date Tue, 06 Oct 2009 11:09:31 GMT
In hadoop-0.20.0 streaming job do not throw proper verbose error message if file is not present
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                 Key: MAPREDUCE-1068
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1068
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: contrib/streaming
    Affects Versions: 0.20.1
            Reporter: Peeyush Bishnoi
             Fix For: 0.20.2, 0.21.0, 0.22.0, 0.20.1


With hadoop-0.20.0 proper error message is not thrown , when streaming job is submitted and
if file is not present to be distributed with "-file" option. But with hadoop-0.18.* proper
verbose message is thrown if file is not present and it is easy for the users to debug.


For example:

With hadoop-0.20.0:
$ hadoop jar $HADOOP_HOME/hadoop-streaming.jar -Dmapred.job.queue.name=general  -input /user/simon/test1.txt
-output /user/simon/test.out -mapper "/bin/cat" -file dummy -reducer "/bin/cat"
Streaming Job Failed!


With hadoop-0.18.*:
$ hadoop  jar $HADOOP_HOME/hadoop-streaming.jar -input /user/simon/test1.txt -output /user/simon/test.out
-mapper "/bin/cat" -file dummy -reducer "/bin/cat"
09/10/06 10:06:49 ERROR streaming.StreamJob: Unexpected value "Argument : /home/simon/dummy
doesn't exist." found while processing  -file

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