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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1330) Make RPCs to DataNodes timeout
Date Wed, 04 Aug 2010 04:21:16 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12895132#action_12895132

Hairong Kuang commented on HDFS-1330:

There are two kinds of communications to a DataNode. Most of them directly uses socket for
things like replica reading or writing. A few of them use RPC.

HDFS-1325 is a problem with file read/write, while this jira is for a problem with RPC communications.
We see that a problematic DataNode causes a client stuck in waiting for response forever.
Having a timeout should help with this problem.

> Make RPCs to DataNodes timeout
> ------------------------------
>                 Key: HDFS-1330
>                 URL: https://issues.apache.org/jira/browse/HDFS-1330
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: data-node
>    Affects Versions: 0.22.0
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.22.0
> This jira aims to make client/datanode or datanode/datanode RPC to have a timeout of

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