Thanks Rob, No OOM in any of the log files, and NO long GC at that time. I attached the last 2 minutes before it hangs until we restart cassandra after hour an half. Regards, Alaa
On Thu, Oct 15, 2015 at 6:29 PM, Robert Coli <rc...@eventbrite.com> wrote: > On Thu, Oct 15, 2015 at 6:04 PM, Alaa Zubaidi (PDF) <alaa.zuba...@pdf.com> > wrote: > >> We are running Cassandra 2.2.1 on Windows 2008R2, and we see that >> multiple Nodes are stuck at 99% CPU bringing the whole VM to a halt. >> We suspect that there is another process that IT/Windows is causing the >> CPU issue, but the problem is Cassandra does NOT recover, the CPU >> utilization start climbing until the VM is not usable. If we restart >> Cassandra, things go back to normal. >> > > Most cases where a JVM does not recover and churns at maxed CPU are the > result of GC failure and/or OOM. > > Check your logs for OOM and long GCs. > > Also FWIW you are among a relatively small group of Windows operators. > Other than with the people working at datastax to support Windows, there is > not a whole lot of well understood operational best practice for Cassandra > on Windows. > > =Rob > > -- Alaa Zubaidi PDF Solutions, Inc. 333 West San Carlos Street, Suite 1000 San Jose, CA 95110 USA Tel: 408-283-5639 fax: 408-938-6479 email: alaa.zuba...@pdf.com -- *This message may contain confidential and privileged information. If it has been sent to you in error, please reply to advise the sender of the error and then immediately permanently delete it and all attachments to it from your systems. If you are not the intended recipient, do not read, copy, disclose or otherwise use this message or any attachments to it. The sender disclaims any liability for such unauthorized use. PLEASE NOTE that all incoming e-mails sent to PDF e-mail accounts will be archived and may be scanned by us and/or by external service providers to detect and prevent threats to our systems, investigate illegal or inappropriate behavior, and/or eliminate unsolicited promotional e-mails (“spam”). If you have any concerns about this process, please contact us at * *legal.departm...@pdf.com* <legal.departm...@pdf.com>*.*
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