Try using jstack to see if there are a lot of threads there. Are you using vNodea and Hadoop ? https://issues.apache.org/jira/browse/CASSANDRA-6169
Cheers ----------------- Aaron Morton New Zealand @aaronmorton Co-Founder & Principal Consultant Apache Cassandra Consulting http://www.thelastpickle.com On 17/12/2013, at 2:48 am, Maciej Miklas <mac.mik...@gmail.com> wrote: > the cassandra-env.sh has option > JVM_OPTS="$JVM_OPTS -Xss180k" > > it will give this error if you start cassandra with java 7. So increase the > value, or remove option. > > Regards, > Maciej > > > On Mon, Dec 16, 2013 at 2:37 PM, srmore <comom...@gmail.com> wrote: > What is your thread stack size (xss) ? try increasing that, that could help. > Sometimes the limitation is imposed by the host provider (e.g. amazon ec2 > etc.) > > Thanks, > Sandeep > > > On Mon, Dec 16, 2013 at 6:53 AM, Oleg Dulin <oleg.du...@gmail.com> wrote: > Hi guys! > > I beleive my limits settings are correct. Here is the output of "ulimits -a": > > core file size (blocks, -c) 0 > data seg size (kbytes, -d) unlimited > scheduling priority (-e) 0 > file size (blocks, -f) unlimited > pending signals (-i) 1547135 > max locked memory (kbytes, -l) unlimited > max memory size (kbytes, -m) unlimited > open files (-n) 100000 > pipe size (512 bytes, -p) 8 > POSIX message queues (bytes, -q) 819200 > real-time priority (-r) 0 > stack size (kbytes, -s) 8192 > cpu time (seconds, -t) unlimited > max user processes (-u) 32768 > virtual memory (kbytes, -v) unlimited > file locks (-x) unlimited > > However, I just had a couple of cassandra nodes go down over the weekend for > no apparent reason with the following error: > > java.lang.OutOfMemoryError: unable to create new native thread > at java.lang.Thread.start0(Native Method) > at java.lang.Thread.start(Thread.java:691) > at > java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:949) > > at > java.util.concurrent.ThreadPoolExecutor.processWorkerExit(ThreadPoolExecutor.java:1017) > > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1163) > > at > java.util.concurrent.ThreadPoolExecutor$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 > > > >
