Re: Cassandra crashed with OOM, and the system.log and debug.log doesn't match.

Thanks for your explanation! > It's taking a full minute to sync your memtable to disk. This is either indication that your disk is broken, or your JVM is pausing for GC. The disk is ok, the long time JVM pausing happens many times, I didn't disable the paging file in windows, may be that's the

Re: Cassandra crashed with OOM, and the system.log and debug.log doesn't match.

On 2017-07-10 02:07 (-0700), 张强 wrote: > Hi experts, I've a single cassandra 3.11.0 node working with kairosdb (a > time series database), after running 4 days with stable workload, the > database client start to get "request errors", but there are not a lot of > error or

Re: Cassandra crashed with OOM, and the system.log and debug.log doesn't match.

Thanks for your reply! There are 3 column families, they are created by kairosdb, one column family takes almost all the workload. I didn't tune the heap size, so by default it'll be 3GB. I have monitored the cpu and memory usage, the cpu usage is about 30% in average, and the available memory is

Re: Cassandra crashed with OOM, and the system.log and debug.log doesn't match.

Hi, *How many column families are there? What is the heap size?* You can turn off logs for statusLogger.java and gc to optimize heap usage. Can you also monitor cpu usage and memory usage? IMO, in your case memory is the bottle-neck. Thanks!! On Mon, Jul 10, 2017 at 5:07 PM, 张强