RE: Follow-up post on Cassandra configuration with some experiments on GC tuning

2010-08-26 Thread David Dabbs
>Jonathan Ellis > >added CMSInitiatingOccupancyFraction=80 for 0.6.6 and 0.7beta2 When do you expect 0.6.6 to land? Thanks, David

Re: Ordered Partitioner load balance problem

2010-08-26 Thread Edward Evans
Upgraded to 0.6.4 and still seeing this behavior. Any help is appreciated. On Thu, Aug 26, 2010 at 1:03 AM, Edward Evans wrote: > I am currently using Cassandra 0.6.2 on four virtual nodes in two different > data centers (A, B). My initial testing used the Random Partitioner and > everything beh

Re: How to ensure data placement on a specific node in a cluster

2010-08-26 Thread Jonathan Ellis
You can't scatter data semi-randomly by connection like that permanently, but https://issues.apache.org/jira/browse/CASSANDRA-876 will let you store it temporarily (for the life of your connection). On Thu, Aug 26, 2010 at 10:39 PM, MK wrote: > Hello, > > I have started playing with a cassandra c

Re: Follow-up post on cassandra configuration with some experiments on GC tuning

2010-08-26 Thread Jonathan Ellis
added CMSInitiatingOccupancyFraction=80 for 0.6.6 and 0.7beta2 On Thu, Aug 26, 2010 at 9:57 PM, Benjamin Black wrote: > imo, these should be part of the defaults. > > On Tue, Aug 24, 2010 at 8:29 AM, Mikio Braun wrote: >> -BEGIN PGP SIGNED MESSAGE- >> Hash: SHA1 >> >> Dear all, >> >> tha

How to ensure data placement on a specific node in a cluster

2010-08-26 Thread MK
Hello, I have started playing with a cassandra cluster and want to do the following - When I insert a value into the cluster by sending the "set" command to a node in the cluster, I want to ensure that atleast one copy of the data will be stored on this node. (So that if this node drops out of the

Re: Follow-up post on cassandra configuration with some experiments on GC tuning

2010-08-26 Thread Benjamin Black
imo, these should be part of the defaults. On Tue, Aug 24, 2010 at 8:29 AM, Mikio Braun wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Dear all, > > thanks again for all the comments I got on my last post. I've played a > bit with different GC settings and got my Cassandra instance

Re: Repair help

2010-08-26 Thread Benjamin Black
recommend "testing the waters" on release software (0.6.x), not beta. On Thu, Aug 26, 2010 at 2:53 PM, Mark wrote: >  I have a 2 node cluster  (testing the waters) w/ a replication factor of 2. > One node got completed screwed up (see any of my previous messages from > today) so I deleted the com

keyspace and CF names in 0.7

2010-08-26 Thread Aaron Morton
Just a heads up for people who may not have played with 0.7*. CASSANDRA-1377 changes the set of allowed characters for keyspace and CF names, they now must match the \w reg ex class. So letters, digitals and the underscore. If you've been naming your keyspace with a domain name (like I was) you wil

Re: Repair help

2010-08-26 Thread Jonathan Ellis
that's not a very useful log level really you should set it debug when running beta software :) On Thu, Aug 26, 2010 at 5:43 PM, Mark wrote: >  On 8/26/10 3:03 PM, Aaron Morton wrote: >> >> Check the logs for errors and run nodetool streams to see if it's moving >> data around. >> >> Aaron >> >>

Re: Repair help

2010-08-26 Thread Mark
On 8/26/10 3:03 PM, Aaron Morton wrote: Check the logs for errors and run nodetool streams to see if it's moving data around. Aaron On 27 Aug, 2010,at 09:53 AM, Mark wrote: I have a 2 node cluster (testing the waters) w/ a replication factor of 2. One node got completed screwed up (see an

Re: Repair help

2010-08-26 Thread Aaron Morton
Check the logs for errors and run nodetool streams to see if it's moving data around. AaronOn 27 Aug, 2010,at 09:53 AM, Mark wrote: I have a 2 node cluster (testing the waters) w/ a replication factor of 2. One node got completed screwed up (see any of my previous messages from today) so I del

Repair help

2010-08-26 Thread Mark
I have a 2 node cluster (testing the waters) w/ a replication factor of 2. One node got completed screwed up (see any of my previous messages from today) so I deleted the commit log and data directory. I restarted the node and rain nodetool repair as describe in http://wiki.apache.org/cassand

Re: Get an error with "Uncaught exception in thread Thread[HINTED-HANDOFF-POOL:1,5,main]", please help me to solve it, thanks~

2010-08-26 Thread Jonathan Ellis
created a ticket for you: https://issues.apache.org/jira/browse/CASSANDRA-1439 On Wed, Aug 25, 2010 at 9:53 PM, Huang Stanley wrote: > Hi all: > > I use Cassandra 0.7 beta, and I create two Cassandra nodes in a cluster. > When second node try to join the cluster, > I got the error message as belo

Re: StackOverflowError on startup!

2010-08-26 Thread Mark
On 8/26/10 11:51 AM, Gary Dusbabek wrote: I'm willing to bet this has something to do with the system table initialization trying to delete its stats, which it can't do until it's initialized, which means it tries to delete its stats, which it can't do until it's initialized, which... you get t

Re: StackOverflowError on startup!

2010-08-26 Thread Gary Dusbabek
I'm willing to bet this has something to do with the system table initialization trying to delete its stats, which it can't do until it's initialized, which means it tries to delete its stats, which it can't do until it's initialized, which... you get the picture. The stack trace is very similar

Re: StackOverflowError on startup!

2010-08-26 Thread Mark
On 8/26/10 11:45 AM, thelastpickle.com wrote: Looks like this https://issues.apache.org/jira/browse/CASSANDRA-1435 Aaron Sent from my iPad On 27 Aug 2010, at 06:16, Mark wrote: On 8/26/10 11:15 AM, Mark wrote: Using 0.7beta1 and I noticed one of my nodes was not responding.. wtf? Went to

Re: StackOverflowError on startup!

2010-08-26 Thread thelastpickle.com
Looks like this https://issues.apache.org/jira/browse/CASSANDRA-1435 Aaron Sent from my iPad On 27 Aug 2010, at 06:16, Mark wrote: > On 8/26/10 11:15 AM, Mark wrote: >> Using 0.7beta1 and I noticed one of my nodes was not responding.. wtf? Went >> to restart and I got the following error. Any

Re: StackOverflowError on startup!

2010-08-26 Thread Mark
On 8/26/10 11:16 AM, Mark wrote: On 8/26/10 11:15 AM, Mark wrote: Using 0.7beta1 and I noticed one of my nodes was not responding.. wtf? Went to restart and I got the following error. Any clues? Exception encountered during startup. java.lang.StackOverflowError at java.util.Vector.ensur

Re: StackOverflowError on startup!

2010-08-26 Thread Mark
On 8/26/10 11:15 AM, Mark wrote: Using 0.7beta1 and I noticed one of my nodes was not responding.. wtf? Went to restart and I got the following error. Any clues? Exception encountered during startup. java.lang.StackOverflowError at java.util.Vector.ensureCapacityHelper(Vector.java:238)

StackOverflowError on startup!

2010-08-26 Thread Mark
Using 0.7beta1 and I noticed one of my nodes was not responding.. wtf? Went to restart and I got the following error. Any clues? Exception encountered during startup. java.lang.StackOverflowError at java.util.Vector.ensureCapacityHelper(Vector.java:238) at java.util.Vector.addElement(Ve

Re: is it my cassandra cluster ok?

2010-08-26 Thread aaron morton
Token selection and moving nodes is described here http://wiki.apache.org/cassandra/Operations Aaron On 26 Aug 2010, at 14:29, john xie wrote: > load balancing? is it means add more nodes? > > > > 2010/8/26 Ryan King > Looks like you need to do some load balancing. > > -ryan > > On Wed,