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Date: Sat, 29 Oct 2011 00:19:33 +0000 (UTC)
From: "Todd Lipcon (Created) (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Created] (HDFS-2512) Add textual error message to data
 transfer protocol responses
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Add textual error message to data transfer protocol responses
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                 Key: HDFS-2512
                 URL: https://issues.apache.org/jira/browse/HDFS-2512
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: data-node, hdfs client
    Affects Versions: 0.23.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon


Currently, the error response code from the DN has very little extra info. I had a situation the other day where the balancer was failing to move blocks, but just reported back "error moving block", which didn't help much. We can easily add a "message" field to OpBlockResponseProto to communicate back the underlying issue (in this case, it was thread quota exceeded)

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