Re: Nodetool repair and Leveled Compaction

2012-09-26 Thread Omid Aladini
I think this JIRA answers your question: https://issues.apache.org/jira/browse/CASSANDRA-2610 which in order not to duplicate work (creation of Merkle trees) repair is done on all replicas for a range. Cheers, Omid On Tue, Sep 25, 2012 at 8:27 AM, Sergey Tryuber wrote: > Hi Radim > > Unfortuna

Re: Nodetool repair and Leveled Compaction

2012-09-24 Thread Sergey Tryuber
Hi Radim Unfortunately number of compaction tasks is not overestimated. The number is decremented one-by-one and this process takes several hours for our 40GB node(( Also, when a lot of compaction tasks appears, we see that total disk space used (via JMX) is doubled and Cassandra really tries to c

Re: Nodetool repair and Leveled Compaction

2012-09-24 Thread Radim Kolar
Repair process by itself is going well in a background, but the issue I'm concerned is a lot of unnecessary compaction tasks number in compaction tasks counter is over estimated. For example i have 1100 tasks left and if I will stop inserting data, all tasks will finish within 30 minutes. I

Nodetool repair and Leveled Compaction

2012-09-24 Thread Sergey Tryuber
Hi Guys We've noticed a strange behavior on our 3-nodes staging Cassandra cluster with RF=2 and LeveledCompactionStrategy. When we run "nodetool repair -pr" on a node, the other nodes start "validation" process and when this process is finished one of the other 2 nodes reports that there are app