Re: Viability of running on EC2

2009-06-13 Thread Anthony Molinaro
, network partitions and machines just disappearing.  How does cassandra deal with these constraints/failures? Thanks for information, -Anthony -- Anthony Molinaro                           antho

Re: python client?

2009-07-06 Thread Anthony Molinaro
! -- Anthony Molinaro antho...@alumni.caltech.edu

Re: thrift+cassandra on RedHat 5...

2009-07-22 Thread Anthony Molinaro
$PREFIX/var/system/System.db $PREFIX/var/system/Table1-Metadata.db I suspect the thrift install is not complete,or I miss some java paths... Any idea how to fix my install? Thx, JD -- Anthony Molinaro

Re: Newbe?s question

2009-08-26 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Re: Configuring multiple nodes

2009-09-20 Thread Anthony Molinaro
...@rackspace.com -- Anthony Molinaro antho...@alumni.caltech.edu

Re: Configuring multiple nodes

2009-09-23 Thread Anthony Molinaro
On Mon, Sep 21, 2009 at 10:08:41AM -0500, Eric Evans wrote: On Sun, 2009-09-20 at 20:46 -0700, Anthony Molinaro wrote: One other gotcha I've come across trying to use jmx was on machines with multiple interfaces. The rmi server doesn't always bind to the one you want. I add this to my

Re: Configuring multiple nodes

2009-09-23 Thread Anthony Molinaro
Okay, added a couple of sentences about this. On Sun, Sep 20, 2009 at 10:52:49PM -0500, Jonathan Ellis wrote: Could you mention this on http://wiki.apache.org/cassandra/RunningCassandra ? On Sun, Sep 20, 2009 at 10:46 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: One other gotcha

Data Corruption Problem with cassandra 0.4.0

2009-09-30 Thread Anthony Molinaro
that cluster). Anyway, any ideas? I've left the broken cluster so I can investigate/patch/etc. -Anthony -- Anthony Molinaro antho...@alumni.caltech.edu

Re: Data Corruption Problem with cassandra 0.4.0

2009-09-30 Thread Anthony Molinaro
$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:207) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) ... 2 more -Anthony On Wed, Sep 30, 2009 at 11:24:15AM -0700, Anthony Molinaro wrote: Hi, I'm not getting any responses on IRC, so

Re: Data Corruption Problem with cassandra 0.4.0

2009-09-30 Thread Anthony Molinaro
, 2009 at 11:46:47AM -0700, Anthony Molinaro wrote: More data, I decided to force a flush on the table I know was corrupt and got this error ERROR [MINOR-COMPACTION-POOL:1] 2009-09-30 18:42:01,010 DebuggableThreadPoolExec utor.java (line 103) Error in executor

Re: backing up data from cassandra

2009-10-05 Thread Anthony Molinaro
a key range scan. With a random partitioner, though, there's no api to iterate through all existing keys.  Why not? Edmond -- Joe Van Dyk http://fixieconsulting.com -- Anthony Molinaro

Re: Thrift Perl API Timeout Issues

2009-10-15 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Re: Thrift Perl API Timeout Issues

2009-10-16 Thread Anthony Molinaro
15, 2009 at 1:38 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: I see a similar thing happening all the time.  I get around it by closing the current connection and reconnecting after a sleep.  Although I am able to do quite a few inserts between errors, so I'm not sure if it's

Re: bandwidth limiting Cassandra's replication and access control

2009-11-11 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Re: Cassandra backup and restore procedures

2009-11-19 Thread Anthony Molinaro
)? -- Anthony Molinaro antho...@alumni.caltech.edu

Re: Cassandra backup and restore procedures

2009-11-19 Thread Anthony Molinaro
Done, https://issues.apache.org/jira/browse/CASSANDRA-564 On Thu, Nov 19, 2009 at 01:17:16PM -0600, Jonathan Ellis wrote: Currently, no. Feel free to open a ticket. It would be fairly easy to make the decommission code in trunk handle this. On Thu, Nov 19, 2009 at 1:13 PM, Anthony Molinaro

Re: Modeling question

2009-11-28 Thread Anthony Molinaro
On Thu, Nov 26, 2009 at 10:34:26PM +0100, gabriele renzi wrote: On Thu, Nov 26, 2009 at 7:12 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: Unless you are using order preserving partitioning which might or might not be what you want, you won't be able to do a full scan

Re: Cassandra access control

2009-12-03 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Thrift 0.2.0 release

2009-12-16 Thread Anthony Molinaro
Hi, So I seem to recall some sort of issues with the 0.2.0 release of thrift and cassandra. Were those ever resolved? Is it safe to use them together? Has anyone tested them? Thanks, -Anthony -- Anthony Molinaro

Large number of ROW-READ-STAGE pending tasks?

2010-01-08 Thread Anthony Molinaro
everything (this has worked in the past, but requires a bit of work to accomplish). This is cassandra 0.4.1 BTW. Thanks, -Anthony -- Anthony Molinaro antho...@alumni.caltech.edu

Re: Large number of ROW-READ-STAGE pending tasks?

2010-01-08 Thread Anthony Molinaro
Ellis wrote: if the queued reads is increasing then you're going to OOM eventually, and it will probably freeze (to the clients' perspective) first while it desperately tries to GC enough to continue. i would restart the affected nodes. On Fri, Jan 8, 2010 at 3:15 PM, Anthony Molinaro antho

Re: Large number of ROW-READ-STAGE pending tasks?

2010-01-08 Thread Anthony Molinaro
). -Anthony On Fri, Jan 8, 2010 at 4:48 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: So I restarted the node with the large number of ROW-READ-STAGE pending tasks, the timeouts are still occuring somewhat randomly, and now MESSAGE-SERIALIZER-POOL seems to be growing on one

Tuning and upgrades

2010-01-13 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Re: Tuning and upgrades

2010-01-13 Thread Anthony Molinaro
compatible with thrift). Also, when transitioning from 0.4.2 to 0.5.0rc3 do I need the clients to upgrade? Trying to figure out the details of how I'll manage the upgrade. -Anthony On Wed, Jan 13, 2010 at 01:38:28PM -0600, Jonathan Ellis wrote: On Wed, Jan 13, 2010 at 1:26 PM, Anthony Molinaro antho

Re: Tuning and upgrades

2010-01-13 Thread Anthony Molinaro
that was cool. So is the thrift interface for 0.5.0 compatible with that of 0.4.x or do I need to upgrade clients for that upgrade? -Anthony On Wed, Jan 13, 2010 at 04:27:32PM -0600, Jonathan Ellis wrote: On Wed, Jan 13, 2010 at 4:19 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: Hi

Re: Tuning and upgrades

2010-01-13 Thread Anthony Molinaro
Also, I notice in 0.5.0 cassandra.in.sh you have -XX:SurvivorRatio=8 \ then further down in the file -XX:SurvivorRatio=128 \ Does the second end up winning? Or is there some magic here. -Anthony On Wed, Jan 13, 2010 at 04:02:48PM -0800, Anthony Molinaro wrote: So the answer is java

OOM on restart

2010-02-11 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Re: OOM on restart

2010-02-12 Thread Anthony Molinaro
on these days? :) On Thu, Feb 11, 2010 at 12:11 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: Hi,  I've been having nodes failing recently with OOM exceptions (not sure why, but we have had an increase in traffic so that could be a cause). Most nodes have restarted fine, one node however

Re: OOM on restart

2010-02-12 Thread Anthony Molinaro
it will block writes (or log replay) to give those time to flush out. So, it sounds like you just need to lower your Memtable max size/object count. On Fri, Feb 12, 2010 at 2:52 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: 0.5.0 final.  I was able to get things going again by upping

Re: OOM on restart

2010-02-12 Thread Anthony Molinaro
, thrift requests, etc) and is there some way to estimate/limit those. Thanks, -Anthony On Fri, Feb 12, 2010 at 04:04:34PM -0800, Anthony Molinaro wrote: Okay, is it better written as NumMemtables = 1 + 2 * AvailableProcessors + NumDataFileDirectory Thus estimated maximum memory

Understanding Bootstrapping

2010-02-24 Thread Anthony Molinaro
is the data streamed too? Thanks, -Anthony -- Anthony Molinaro antho...@alumni.caltech.edu

Multiple Data Directories

2010-02-25 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Re: Multiple Data Directories

2010-02-25 Thread Anthony Molinaro
...@gmail.com wrote: Cassandra always compacts to the directory with the most free space. There is not a way to influence this. Gary On Thu, Feb 25, 2010 at 13:23, Anthony Molinaro antho...@alumni.caltech.edu wrote: Hi,  So is there anyway to force distribution among DataFileDirectory

Re: Multiple Data Directories

2010-02-25 Thread Anthony Molinaro
anyway. So I think your approach is flawed. It's designed to allow adding capacity by adding nodes, not just by adding more space, or your cpu / ram ratio will degrade. On Thu, Feb 25, 2010 at 2:48 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: Okay, so the disk sizing seems to make

Process for removing an old CF in 0.5.0

2010-03-01 Thread Anthony Molinaro
the files with that column family name in the filename? Thanks, -Anthony -- Anthony Molinaro antho...@alumni.caltech.edu

Re: Looking for work

2010-03-02 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Re: Effective allocation of multiple disks

2010-03-10 Thread Anthony Molinaro
-- Anthony Molinaro antho...@alumni.caltech.edu

Re: Effective allocation of multiple disks

2010-03-10 Thread Anthony Molinaro
thoroughly, and I have some ideas there. -Original Message- From: Anthony Molinaro antho...@alumni.caltech.edu Sent: Wednesday, March 10, 2010 3:38pm To: cassandra-user@incubator.apache.org Subject: Re: Effective allocation of multiple disks This is incorrect, as discussed a few

Re: Effective allocation of multiple disks

2010-03-11 Thread Anthony Molinaro
, Jonathan Ellis wrote: On Wed, Mar 10, 2010 at 9:31 PM, Anthony Molinaro antho...@alumni.caltech.edu wrote: I would almost recommend just keeping things simple and removing multiple data directories from the config altogether and just documenting that you should plan on using OS level