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https://issues.apache.org/jira/browse/HDFS-2637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13164093#comment-13164093
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Todd Lipcon commented on HDFS-2637:
-----------------------------------

doh, yea, this is dup of HDFS-2378. Somehow when Eli and I were discussing it 
this morning I forgot that I'd already filed a JIRA for it. Since we already 
have the patch here, we can just commit this one and mark the other as dup, I 
guess?

In trunk the block recovery algorithm is quite different so I don't think it 
applies -- the block recovery is triggered as part of the pipeline setup, 
rather than an RPC. But maybe we have a similar type of bug in trunk with 
timeouts in the pipeline setup process? Mind taking a look, Uma?
                
> The rpc timeout for block recovery is too low 
> ----------------------------------------------
>
>                 Key: HDFS-2637
>                 URL: https://issues.apache.org/jira/browse/HDFS-2637
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client
>    Affects Versions: 1.0.0
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>         Attachments: hdfs-2637-b1-1.patch
>
>
> The RPC timeout for block recovery does not take into account that it issues 
> multiple RPCs itself. This can cause recovery to fail if the network is 
> congested or DNs are busy.

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