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From "Mike Drob (JIRA)" <>
Subject [jira] [Updated] (ACCUMULO-2244) Tracer occasionally hangs on exit
Date Fri, 18 Jul 2014 03:34:04 GMT


Mike Drob updated ACCUMULO-2244:

    Resolution: Cannot Reproduce
        Status: Resolved  (was: Patch Available)

[~busbey] - Please re-open if you see this with a later version. The 1.4 branch is EOL and
will not have further development.

> Tracer occasionally hangs on exit
> ---------------------------------
>                 Key: ACCUMULO-2244
>                 URL:
>             Project: Accumulo
>          Issue Type: Bug
>          Components: trace
>    Affects Versions: 1.4.5
>         Environment: 1.4.5-SNAPSHOT on CDH4.5.0 w/gremlins
>            Reporter: Sean Busbey
>            Priority: Minor
>         Attachments: ACCUMULO-2244.patch, tracer_18017.debug.log, tracer_18017.jstack.txt,
> When I am perturbing the availability of network components via gremlins, occasionally
a tracer that has lost its zookeeper lock will hang while trying to exit.
> There's nothing obvious in the logs. Jstack shows some thrift stuff around.
> kill -9 on the process makes it finally exit and then restarting works like normal.
> I suspect it's because of me monkeying with iptables (rather than the network failure
itself). Combined with the obvious workaround, low priority.
> Not sure if it impacts later versions.

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