Re: 0.6 insert performance .... Re: [RELEASE] 0.6.1

Since the scale of GC graph in the slides is different from the throughput ones. I will do another test for this issue. Thanks for your advices, Masood and Jonathan. --- Here, i just post my cossandra.in.sh. JVM_OPTS=" \ -ea \ -Xms128M \ -Xmx6G \ -XX:Tar

Re: Can not start cassandra in local correctly

It's a one-time operation when upgrading. You're supposed to do it manually that one time. On Mon, Apr 19, 2010 at 9:17 PM, Jeff Zhang wrote: > Gary， > > Thank you for your detailed explanation. I looked at the code, it seems no > one will call StorageService.loadSchemaFromXML(). > I think we sh

Re: Can not start cassandra in local correctly

Gary， Thank you for your detailed explanation. I looked at the code, it seems no one will call StorageService.loadSchemaFromXML(). I think we should provide a parameter in CassandraDaemon to control whether load schema from cassandra.xml On Mon, Apr 19, 2010 at 9:13 PM, Gary Dusbabek wrote: >

Re: 0.6 insert performance .... Re: [RELEASE] 0.6.1

Definitely let us know if you find that changing the GC options helps. We have tried to get some of the low-hanging fruit there but nobody has put serious effort into tuning it. FWIW, Chris Goffinet tested using ArrayBlockingQueue instead of LBQ in https://issues.apache.org/jira/browse/CASSANDRA-

Re: 0.6 insert performance .... Re: [RELEASE] 0.6.1

Minimizing GC pauses or minimizing time slots allocated to GC pauses -- either through configuration or re-implementations of garbage collection "bottlenecks" (i.e. object-generation "bottlenecks") -- seem to be the immediate approach. (Other approaches appear to be more intrusive.) At code level,

Re: [antho...@alumni.caltech.edu: Clarification on Ring operations in Cassandra 0.5.1]

I'll partially answer my own post since I've not heard back anything yet. On Sat, Apr 17, 2010 at 03:56:34PM -0700, Anthony Molinaro wrote: > I was looking over http://wiki.apache.org/cassandra/Operations > and it seems like I could do something like. > > 1) shutdown cassandra on instance I wan

Re: loading schema in trunk

On Tue, 13 Apr 2010 10:19:23 -0500 Ted Zlatanov wrote: TZ> I think everyone agrees loadSchemaFromXML can go away after 0.7 but just TZ> to be clear, you don't think Cassandra after 0.7 should come bundled TZ> with a tool that can dump, clear, and restore the schema? It's trivial TZ> to implemen

RE: 0.6 insert performance .... Re: [RELEASE] 0.6.1

We see this behavior as well with 0.6, heap usage graphs look almost identical. The GC is a noticeable bottleneck, we've tried jdku19 and jrockit vm's. It basically kills any kind of soft real time behavior. From: Masood Mortazavi [mailto:masoodmortaz...@gmail.com] Sent: Monday, April 19, 2010 4

Re: Can not start cassandra in local correctly

This question is starting to occur with enough frequency that I have added a FAQ entry about it. http://wiki.apache.org/cassandra/FAQ#no_keyspaces Gary. On Sun, Apr 18, 2010 at 02:46, Jeff Zhang wrote: > Hi all, > > When I use the cassandra trunk, keyspace defined in cassandra.xml can not > be

Build failed in Hudson: Cassandra #410

See -- [...truncated 1152 lines...] [junit] [junit] Cobertura: Loaded information on 763 classes. [junit] Cobertura: Saved information on 763 classes. [junit] Testsuite: org.apache.c

0.6 insert performance .... Re: [RELEASE] 0.6.1

I wonder if anyone can use: * Add logging of GC activity (CASSANDRA-813) to confirm this: http://www.slideshare.net/schubertzhang/cassandra-060-insert-throughput - m. On Sun, Apr 18, 2010 at 6:58 PM, Eric Evans wrote: > > Hot on the trails of 0.6.0 comes our latest, 0.6.1. This stable point

Build failed in Hudson: Cassandra #410

See -- [...truncated 1150 lines...] [junit] [junit] Cobertura: Loaded information on 763 classes. [junit] Cobertura: Saved information on 763 classes. [junit] Testsuite: org.apache.c