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From srmore <comom...@gmail.com>
Subject Re: Error during startup - java.lang.OutOfMemoryError: unable to create new native thread
Date Wed, 11 Sep 2013 13:47:52 GMT
Thanks Viktor,

- check (cassandra-env.sh) -Xss size, you may need to increase it for your
JVM;

This seems to have done the trick !

Thanks !


On Tue, Sep 10, 2013 at 12:46 AM, Viktor Jevdokimov <
Viktor.Jevdokimov@adform.com> wrote:

>  For start:****
>
> - check (cassandra-env.sh) -Xss size, you may need to increase it for your
> JVM;****
>
> - check (cassandra-env.sh) -Xms and -Xmx size, you may need to increase it
> for your data load/bloom filter/index sizes.****
>
> ** **
>
> ** **
>
> ** **
>    Best regards / Pagarbiai
> *Viktor Jevdokimov*
> Senior Developer
>
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> *From:* srmore [mailto:comomore@gmail.com]
> *Sent:* Tuesday, September 10, 2013 6:16 AM
> *To:* user@cassandra.apache.org
> *Subject:* Error during startup - java.lang.OutOfMemoryError: unable to
> create new native thread [heur]****
>
> ** **
>
>
> I have a 5 node cluster with a load of around 300GB each. A node went down
> and does not come up. I can see the following exception in the logs.
>
> ERROR [main] 2013-09-09 21:50:56,117 AbstractCassandraDaemon.java (line
> 139) Fatal exception in thread Thread[main,5,main]
> java.lang.OutOfMemoryError: unable to create new native thread
>         at java.lang.Thread.start0(Native Method)
>         at java.lang.Thread.start(Thread.java:640)
>         at
> java.util.concurrent.ThreadPoolExecutor.addIfUnderCorePoolSize(ThreadPoolExecutor.java:703)
>         at
> java.util.concurrent.ThreadPoolExecutor.prestartAllCoreThreads(ThreadPoolExecutor.java:1392)
>         at
> org.apache.cassandra.concurrent.JMXEnabledThreadPoolExecutor.<init>(JMXEnabledThreadPoolExecutor.java:77)
>         at
> org.apache.cassandra.concurrent.JMXEnabledThreadPoolExecutor.<init>(JMXEnabledThreadPoolExecutor.java:65)
>         at
> org.apache.cassandra.concurrent.JMXConfigurableThreadPoolExecutor.<init>(JMXConfigurableThreadPoolExecutor.java:34)
>         at
> org.apache.cassandra.concurrent.StageManager.multiThreadedConfigurableStage(StageManager.java:68)
>         at
> org.apache.cassandra.concurrent.StageManager.<clinit>(StageManager.java:42)
>         at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:344)
>         at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:173)***
> *
>
> ** **
>
> The *ulimit -u* output is
> *515042*****
>
> Which is far more than what is recommended [1] (10240) and I am skeptical
> to set it to unlimited as recommended here [2]****
>
> Any pointers as to what could be the issue and how to get the node up.****
>
>
>
>
> [1]
> http://www.datastax.com/documentation/cassandra/1.2/webhelp/index.html?pagename=docs&version=1.2&file=install/recommended_settings#cassandra/install/installRecommendSettings.html
>
> [2]
> http://mail-archives.apache.org/mod_mbox/cassandra-user/201303.mbox/%3CCAPqEvGE474Omea1BFLJ6U_pbAkOwWxk=Dwo35_pc-ATwB4_6iA@mail.gmail.com%3E
> ****
>
> Thanks !****
>

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