[
https://issues.apache.org/jira/browse/HADOOP-11780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15526395#comment-15526395
]
Kihwal Lee commented on HADOOP-11780:
-------------------------------------
The patch looks good. We have been running with this for a long time. The only
difference is the addition of jvm termination, which was done to take care of
other cases reported HADOOP-13657. [~zhz], are you okay with this patch?
> Prevent IPC reader thread death
> -------------------------------
>
> Key: HADOOP-11780
> URL: https://issues.apache.org/jira/browse/HADOOP-11780
> Project: Hadoop Common
> Issue Type: Bug
> Components: ipc
> Affects Versions: 2.0.0-alpha
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Critical
> Attachments: HADOOP-11780.patch
>
>
> Reader threads can die to a race condition with the responder thread. If the
> server's ipc handler cannot send a response in one write, it delegates
> sending the rest of the response to the responder thread.
> The race occurs when the responder thread has an exception writing to the
> socket. The responder closes the socket. This wakes up the reader polling
> on the socket. If a {{CancelledKeyException}} is thrown, which is a runtime
> exception, the reader dies. All connections serviced by that reader are now
> in limbo until the client possibly times out. New connections play roulette
> as to whether they are assigned to a defunct reader.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: common-issues-h...@hadoop.apache.org
