You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-dev@hadoop.apache.org by "Owen O'Malley (JIRA)" <ji...@apache.org> on 2008/04/22 20:55:22 UTC

[jira] Updated: (HADOOP-2188) RPC should send a ping rather than use client timeouts

     [ https://issues.apache.org/jira/browse/HADOOP-2188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Owen O'Malley updated HADOOP-2188:
----------------------------------

    Status: Open  (was: Patch Available)

> RPC should send a ping rather than use client timeouts
> ------------------------------------------------------
>
>                 Key: HADOOP-2188
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2188
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs, ipc
>    Affects Versions: 0.16.1
>            Reporter: Owen O'Malley
>            Assignee: Hairong Kuang
>         Attachments: ipc-timeout.patch, ipc-timeout1.patch, ipc-timeout2.patch, ipc-timeout3.patch, ipc-timeout4.patch, ipc-timeout5.patch, rpc-to.patch
>
>
> Current RPC (really IPC) relies on client side timeouts to find "dead" sockets. I propose that we have a thread that once a minute (if the connection has been idle) writes a "ping" message to the socket. The client can detect a dead socket by the resulting error on the write, so no client side timeout is required. Also note that the ipc server does not need to respond to the ping, just discard it.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.