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https://issues.apache.org/jira/browse/HADOOP-2346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12566264#action_12566264
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Raghu Angadi commented on HADOOP-2346:
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Given the above issues, this is probably not a 0.16.1 jira. I would like to
implement these with single selector if there are no better alternatives. But
it might not be suitable for 0.16.1.
> DataNode should have timeout on socket writes.
> ----------------------------------------------
>
> Key: HADOOP-2346
> URL: https://issues.apache.org/jira/browse/HADOOP-2346
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.15.1
> Reporter: Raghu Angadi
> Assignee: Raghu Angadi
> Fix For: 0.16.1
>
> Attachments: HADOOP-2346.patch, HADOOP-2346.patch, HADOOP-2346.patch,
> HADOOP-2346.patch
>
>
> If a client opens a file and stops reading in the middle, DataNode thread
> writing the data could be stuck forever. For DataNode sockets we set read
> timeout but not write timeout. I think we should add a write(data, timeout)
> method in IOUtils that assumes it the underlying FileChannel is non-blocking.
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