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Date: Wed, 22 Jun 2011 02:18:47 +0000 (UTC)
From: "XieXianshan (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Created] (MAPREDUCE-2612) The result returned by the wrong
 usage of the command "job -counter<job-id> <group-name> <counter-name> "is
 not appropriate
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The result returned by the wrong usage of the command "job -counter<job-id> <group-name> <counter-name> "is not appropriate
---------------------------------------------------------------------------------------------------------------------------

                 Key: MAPREDUCE-2612
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2612
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
    Affects Versions: 0.23.0
            Reporter: XieXianshan
            Priority: Minor
             Fix For: 0.23.0


The result returned by Map/Reduce command "job -counter<job-id> <group-name> <counter-name> " is always zero ,when use this command with incorrect group name or counter name. 
It is very easy to be misunderstood if users just make a spelling mistake.
So,for more comprehensible information, more detailed results should be displayed as the following:
[Could not find group FileSystemCounters_err] <--incorrect group name
  or
[Could not find counter FILE_BYTES_READ_err in the group FileSystemCounters] <--incorrect counter name

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