Re: One node misbehaving (lot's of GC), ideas?

2015-04-15 Thread Michal Michalski
Hi Erik, Forgetting for a while that it's only a single row: does this node store any super-long rows? The first things that come to my mind after reading your e-mail is unthrottled compaction (sounds like a possible issue, but it would affect other nodes too) or very large rows. Or a mix of

One node misbehaving (lot's of GC), ideas?

2015-04-15 Thread Erik Forsberg
Hi! We having problems with one node (out of 56 in total) misbehaving. Symptoms are: * High number of full CMS old space collections during early morning when we're doing bulkloads. Yes, bulkloads, not CQL, and only a few thrift insertions. * Really long stop-the-world GC events (I've seen up to