incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ryan King <r...@twitter.com>
Subject Re: Nodes dropping out of cluster due to GC
Date Wed, 02 Jun 2010 16:35:56 GMT
Why run with so few nodes?

-ryan

On Tue, Jun 1, 2010 at 4:20 PM, Eric Halpern <eric@dnagamesinc.com> wrote:
>
> Hello,
>
> We're running a 4 node cluster on beefy EC2 virtual instances (8 core, 32
> GB) using EBS storage with 8 GB of heap allocated to the JVM.
>
> Every couple of hours, each of the nodes does a concurrent mark/sweep that
> takes around 30 seconds to complete.  During that GC, the node temporarily
> drops out of the cluster, usually for about 15 seconds.
>
> The frequency of the concurrent mark sweeps seems reasonable, but the fact
> that the node drops out of the cluster temporarily is a major problem since
> this has significant impact on the performance and stability of our service.
>
> Has anyone experienced this sort of problem?  It would be great to hear from
> anyone who has had experience with this sort of issue and/or suggestions for
> how to deal with it.
>
> Thanks, Eric
> --
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Nodes-dropping-out-of-cluster-due-to-GC-tp5128481p5128481.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.
>

Mime
View raw message