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https://issues.apache.org/jira/browse/HDFS-1787?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Hsieh reassigned HDFS-1787:
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Assignee: (was: Jonathan Hsieh)
Unassigning since I haven't had time to work on this and since infrastructure
changed underneath it.
> "Not enough xcievers" error should propagate to client
> ------------------------------------------------------
>
> Key: HDFS-1787
> URL: https://issues.apache.org/jira/browse/HDFS-1787
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Labels: newbie
> Fix For: 0.24.0
>
> Attachments: hdfs-1787.2.patch, hdfs-1787.3.patch, hdfs-1787.3.patch,
> hdfs-1787.5.patch, hdfs-1787.patch
>
>
> 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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