Re: Cassandra Nodes Freeze/Down for ConcurrentMarkSweep GC?

2010-08-22 Thread Peter Schuller
> [4] Is GC ConcurrentMarkSweep a Stop-The-World situation? Where the > JVM cannot do anything else? Hence then node is technically Down? > Correct? No; the concurrent mark/sweep phase runs concurrently with your application. CMS will cause a stop-the-world full pause it it fails to complete a CMS

Re: Cassandra Nodes Freeze/Down for ConcurrentMarkSweep GC?

2010-08-22 Thread Benjamin Black
http://riptano.blip.tv/file/4012133/ On Sun, Aug 22, 2010 at 12:11 PM, Moleza Moleza wrote: > Hi, > I am setting up a cluster on a linux box. > Everything seems to be working great and I am watching the ring with: > watch -d -n 2 nodetool -h localhost ring > Suddenly, I see that one of the nodes

Re: Cassandra Nodes Freeze/Down for ConcurrentMarkSweep GC?

2010-08-22 Thread Jonathan Ellis
GCs never take that long unless you're swapping. On Sun, Aug 22, 2010 at 2:11 PM, Moleza Moleza wrote: > Hi, > I am setting up a cluster on a linux box. > Everything seems to be working great and I am watching the ring with: > watch -d -n 2 nodetool -h localhost ring > Suddenly, I see that one of

Re: Cassandra Nodes Freeze/Down for ConcurrentMarkSweep GC?

2010-08-22 Thread Moleza Moleza
Hi, I am setting up a cluster on a linux box. Everything seems to be working great and I am watching the ring with: watch -d -n 2 nodetool -h localhost ring Suddenly, I see that one of the nodes just went down (at 14:07): Status changed from Up to Down. 13 minutes later (without any intervention) t