Re: 10 minute cassandra pause

2010-06-24 Thread Jonathan Ellis
Right, I think there must be some other factor here because neither the flush nor discard of obsolete commitlog segments block writes. On Wed, Jun 23, 2010 at 7:05 PM, Sean Bridges wrote: > I see about 3000 lines of, > > INFO [COMMIT-LOG-WRITER] 2010-06-23 16:40:29,107 CommitLog.java (line > 412)

Re: 10 minute cassandra pause

2010-06-23 Thread Sean Bridges
I see about 3000 lines of, INFO [COMMIT-LOG-WRITER] 2010-06-23 16:40:29,107 CommitLog.java (line 412) Discarding obsolete commit log:CommitLogSegment(/data1/cass/commitlog/CommitLog-1277302220723.log) Then, http://pastebin.com/YQA0mpRG It's around 16:50 that cassandra writes stop timing out. So

Re: 10 minute cassandra pause

2010-06-23 Thread Benjamin Black
Are you seeing any sort of log messages from Cassandra at all? On Wed, Jun 23, 2010 at 2:26 PM, Sean Bridges wrote: > We were running a load test against a single 0.6.2 cassandra node.  24 > hours into the test,  Cassandra appeared to be nearly frozen for 10 > minutes.  Our write rate went to alm

10 minute cassandra pause

2010-06-23 Thread Sean Bridges
We were running a load test against a single 0.6.2 cassandra node. 24 hours into the test, Cassandra appeared to be nearly frozen for 10 minutes. Our write rate went to almost 0, and we had a large number of write timeouts. We weren't swapping or gc'ing at the time. It looks like the problems