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https://issues.apache.org/jira/browse/MAPREDUCE-2386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13007351#comment-13007351
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Todd Lipcon commented on MAPREDUCE-2386:
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Some more info about the epoll fd:
[todd@XXXX ~]$ ls -l /proc/17218/fd/157
lrwx------. 1 todd todd 64 Mar 15 21:56 /proc/17218/fd/157 ->
socket:[3219051144]
[todd@XXXX ~]$ cat /proc/17218/fdinfo/157
pos: 0
flags: 02
[todd@XXXX ~]$ lsof -p 17218 | grep ' 157'
java 17218 todd 157u unix 0xffff8800abb36380 0t0 3219051144 socket
> TT jetty server stuck in tight loop around epoll_wait
> -----------------------------------------------------
>
> Key: MAPREDUCE-2386
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2386
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Affects Versions: 0.23.0
> Environment: RHEL 6.0 "Santiago"
> Reporter: Todd Lipcon
>
> In some load testing, I got a TaskTracker into a state where its Jetty server
> is in a tight loop calling epoll_wait, which is returning EINVAL:
> [pid 19573] epoll_wait(157, 40829000, 8192, 0) = -1 EINVAL (Invalid argument)
> It's not responding to any HTTP connections - connections are accepted and
> then just hang.
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