DataStax Support Forums » Topic: Cannot rebalance cluster with opscenter

DataStax Support Forums » Topic: Cannot rebalance cluster with opscenter http://www.datastax.com/support-forums/topic/cannot-rebalance-cluster-with-opscenter Software, Support, and Training for Apache Cassandra en-US Tue, 18 Jun 2013 21:44:35 +0000 http://bbpress.org/?v=1.0.3 <![CDATA[Search]]> q http://www.datastax.com/support-forums/search.php nickmbailey on "Cannot rebalance cluster with opscenter" http://www.datastax.com/support-forums/topic/cannot-rebalance-cluster-with-opscenter#post-735 Tue, 22 Nov 2011 17:42:27 +0000 nickmbailey 735@http://www.datastax.com/support-forums/ Ah, yes those mbeans were added in 0.8.2. <a href="https://issues.apache.org/jira/browse/CASSANDRA-2770" rel="nofollow">https://issues.apache.org/jira/browse/CASSANDRA-2770</a> Unfortunately the rebalance functionality requires at least version 0.8.2 of Cassandra. hauslerm on "Cannot rebalance cluster with opscenter" http://www.datastax.com/support-forums/topic/cannot-rebalance-cluster-with-opscenter#post-734 Tue, 22 Nov 2011 17:38:24 +0000 hauslerm 734@http://www.datastax.com/support-forums/ I'm running cassandra 0.8.1 commitlog_directory: /var/lib/cassandra/commitlog I don't see a CommitLogLocation attribute in that bean. Is it only present in a newer version of Cassandra? nickmbailey on "Cannot rebalance cluster with opscenter" http://www.datastax.com/support-forums/topic/cannot-rebalance-cluster-with-opscenter#post-733 Tue, 22 Nov 2011 17:11:31 +0000 nickmbailey 733@http://www.datastax.com/support-forums/ The error appears to be happening because Cassandra is returning an empty string as the location of the commit log. What version of Cassandra are you on? What is commitlog_directory set to in cassandra.yaml? If you can use JConsole to browse JMX you can find this value under The StorageServiceMBean and CommitLogLocation attribute. You should be able to verify if an empty string is actually being returned. hauslerm on "Cannot rebalance cluster with opscenter" http://www.datastax.com/support-forums/topic/cannot-rebalance-cluster-with-opscenter#post-732 Tue, 22 Nov 2011 17:01:44 +0000 hauslerm 732@http://www.datastax.com/support-forums/ I'm trying the Enterprise version of OpsCenter, and when I try to rebalance my cluster I get an error saying "Rebalance Failed: The data partitions for node <IP> have not been determined. I'm using a RandomPartitioner scheme. OpsCenter opscenterd.log shows this error <a href="http://pastebin.com/HCh0D9nM" rel="nofollow">http://pastebin.com/HCh0D9nM</a> The agents are showing this error <a href="http://pastebin.com/KjaL0kdu" rel="nofollow">http://pastebin.com/KjaL0kdu</a> I'm running 8 nodes, Debian Lenny.