Re: Significant drop in storage load after 2.1.6->2.1.8 upgrade

2015-07-19 Thread Mike Heffner
Nate, Thanks. I dug through the changes a bit more and I believe my original observation may have been due to: https://github.com/krummas/cassandra/commit/fbc47e3b950949a8aa191bc7e91eb6cb396fe6a8 from: https://issues.apache.org/jira/browse/CASSANDRA-9572 I had originally passed over it because

Re: Significant drop in storage load after 2.1.6->2.1.8 upgrade

2015-07-18 Thread Nate McCall
Perhaps https://issues.apache.org/jira/browse/CASSANDRA-9592 got compactions moving forward for you? This would explain the drop. However, the discussion on https://issues.apache.org/jira/browse/CASSANDRA-9683 seems to be similar to what you saw and that is currently being investigated. On Fri, J

Significant drop in storage load after 2.1.6->2.1.8 upgrade

2015-07-17 Thread Mike Heffner
Hi all, I've been upgrading several of our rings from 2.1.6 to 2.1.8 and I've noticed that after the upgrade our storage load drops significantly (I've seen up to an 80% drop). I believe most of the data that is dropped is tombstoned (via TTL expiration) and I haven't detected any data loss yet.