Re: Cassandra 0.8.4 node keeps crashing with OOM errors

2012-09-18 Thread Feng Qu
try increasing vm.max_map_count per http://blog.timstoop.nl/2011/04/20/cassandra-java-io-ioerror-java-io-ioexception-map-failed/     Feng Qu > > From: Raj N >To: user@cassandra.apache.org >Sent: Tuesday, September 18, 2012 6:37 PM >Subject:

can I drop a composite index using cli?

2012-07-20 Thread Feng Qu
validation_class : UTF8Type},     {column_name : 'payload',     validation_class : UTF8Type},     {column_name : 'referenceId',     validation_class : UTF8Type,     index_name : 'MobilePushNotificationLog_referenceId_idx',     index_type : 0},     {column_name : 'retryCount',     validation_class : UTF8Type},     {column_name : 'status',     validation_class : UTF8Type},     {column_name : 'userName',     validation_class : UTF8Type,     index_name : 'MobilePushNotificationLog_userName_idx', index_type : 0}];     Feng Qu

Re: does secondary index get created(rebuilt?) every time Cassandra restarts?

2012-07-20 Thread Feng Qu
(line 183) Creating new index : ColumnDefinition{name=757365724e616d65, validator=org.apache.cassandra.db.marshal.UTF8Type, index_type=KEYS, index_name='MobilePushNotificationLog_userName_idx'}   Feng Qu > > From: aaron morton >To: use

does secondary index get created(rebuilt?) every time Cassandra restarts?

2012-07-19 Thread Feng Qu
ed during start up?   Feng Qu

Re: Couldn't find cfId

2012-05-16 Thread Feng Qu
Daning,  You could clear the hintedhandoff via jmx ( HintedHandOffManagerMBean.deleteHintsForEndpoint ) for that host.     Feng Qu > > From: Daning Wang >To: user@cassandra.apache.org >Sent: Wednesday, May 16, 2012 10:38 AM >Subject: Re: Cou

Re: nodetool ring runs very slow

2012-03-27 Thread Feng Qu
emtable and/or cache sizes.  Cassandra will now flush up to the two largest memtables to free up memory.  Adjust flush_largest_memtables_at threshold in cassandra.yaml if you don't want Cassandra to do this automatically   Feng Qu > > From: Jonathan Ellis &

Re: nodetool ring runs very slow

2012-03-27 Thread Feng Qu
Haven't received any reply. Resend...   Feng Qu > > From: Feng Qu >To: Cassandra User Group >Sent: Wednesday, February 22, 2012 1:49 PM >Subject: nodetool ring runs very slow > > >We noticed that nodetool ring sometimes returns i

offline compaction

2012-03-08 Thread Feng Qu
Hello, is there a way to take one node out of ring and running a major compaction?    Feng Qu

Server crashed due to "OutOfMemoryError: Java heap space"

2012-02-24 Thread Feng Qu
host with 96GB RAM.  I would appreciate for help to figure out the root cause and solution.   Feng Qu  INFO [GossipTasks:1] 2012-02-22 13:15:59,135 Gossiper.java (line 697) InetAddress /10.89.74.67 is now dead.  INFO [ScheduledTasks:1] 2012-02-22 13:16:12,114 StatusLogger.java (line 65)

nodetool ring runs very slow

2012-02-22 Thread Feng Qu
0m0.339s sys 0m0.054s   Feng Qu

will compaction delete empty rows after all columns expired?

2011-12-27 Thread Feng Qu
Compaction should delete empty rows once gc_grace_seconds is passed, right?    Feng Qu

questions on datastax opscenter

2011-12-20 Thread Feng Qu
I have two questions for community version of opscenter 1) does it work with multiple cassandra cluster? 2) are agent ports 61620/61621 configurable? these ports are blocked in our env.  Thanks in advance   Feng Qu

read/write counts

2011-12-11 Thread Feng Qu
Hello, When I use nodetool cfstas, I see read/write for both keyspace and column family. I assume both number are counted across the ring, but I saw different read/write counts showed on one node comparing to other 7 nodes. node 1,2,4-8: Keyspace: ks         Read Count: 44285565         Rea

changing ownership when nodes have same token

2011-11-10 Thread Feng Qu
Hello,  I notice that when starting a new node with same configuration(cluster name, seeds, token etc) as an existing ring member, the new node will take over the ownership from existing ring member. Is this expected behavior? I would like to see Cassandra prevents new node from joining the rin