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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2011/03/25 19:42:09 UTC

[jira] [Created] (HDFS-1787) "Not enough xcievers" error should propagate to client

"Not enough xcievers" error should propagate to client
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                 Key: HDFS-1787
                 URL: https://issues.apache.org/jira/browse/HDFS-1787
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Todd Lipcon


We find that users often run into the default transceiver limits in the DN. Putting aside the inherent issues with xceiver threads, it would be nice if the "xceiver limit exceeded" error propagated to the client. Currently, clients simply see an EOFException which is hard to interpret, and have to go slogging through DN logs to find the underlying issue.

The data transfer protocol should be extended to either have a special error code for "not enough xceivers" or should have some error code for generic errors with which a string can be attached and propagated.

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