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From srmore <comom...@gmail.com>
Subject Re: Cassandra 1.2 : OutOfMemoryError: unable to create new native thread
Date Mon, 16 Dec 2013 13:37:11 GMT
What is your thread stack size (xss) ? try increasing that, that could
help. Sometimes the limitation is imposed by the host provider (e.g.
amazon ec2 etc.)

Thanks,
Sandeep


On Mon, Dec 16, 2013 at 6:53 AM, Oleg Dulin <oleg.dulin@gmail.com> wrote:

> Hi guys!
>
> I beleive my limits settings are correct. Here is the output of "ulimits
> -a":
>
> core file size          (blocks, -c) 0
> data seg size           (kbytes, -d) unlimited
> scheduling priority             (-e) 0
> file size               (blocks, -f) unlimited
> pending signals                 (-i) 1547135
> max locked memory       (kbytes, -l) unlimited
> max memory size         (kbytes, -m) unlimited
> open files                      (-n) 100000
> pipe size            (512 bytes, -p) 8
> POSIX message queues     (bytes, -q) 819200
> real-time priority              (-r) 0
> stack size              (kbytes, -s) 8192
> cpu time               (seconds, -t) unlimited
> max user processes              (-u) 32768
> virtual memory          (kbytes, -v) unlimited
> file locks                      (-x) unlimited
>
> However,  I just had a couple of cassandra nodes go down over the weekend
> for no apparent reason with the following error:
>
> java.lang.OutOfMemoryError: unable to create new native thread
>        at java.lang.Thread.start0(Native Method)
>        at java.lang.Thread.start(Thread.java:691)
>        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:949)
>
>        at java.util.concurrent.ThreadPoolExecutor.processWorkerExit(ThreadPoolExecutor.java:1017)
>
>        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1163)
>
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>
>        at java.lang.Thread.run(Thread.java:722)
>
> Any input is greatly appreciated.
> --
> Regards,
> Oleg Dulin
> http://www.olegdulin.com
>
>
>

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