Hi guys
I have tried cassandra 0.6.4 with replication factor 3 on 4 VM node .
everything (column,super-column,
replication,failover) i tried was successful from cli.
But I am stucked with thrift client. How to access cassandra thrift.
Do i have to compile thrift pkg for perl or I can directly used
Before I applied these changes the young gen and the survivor space
were very spiky. Now they both seem very low all the time. As you see
from my screen shot, before these changes my JVM memory would make
large saw tooths, now all three pools young, eden, perm seem smoother.
I'm not sure
I'm about to be on a series of long plane flights ... is there way to
download the videos from the summit for offline viewing?
Looks like below each video (on blip.tv) there's a download link - downloads to
a flash video (.flv) file.
On Aug 28, 2010, at 5:33 AM, Phil Stanhope wrote:
I'm about to be on a series of long plane flights ... is there way to
download the videos from the summit for offline viewing?
Thanks ... The format and download links did the trick
-phil
On Aug 28, 2010, at 7:38 AM, Jeremy Hanna jeremy.hanna1...@gmail.com wrote:
Looks like below each video (on blip.tv) there's a download link - downloads
to a flash video (.flv) file.
On Aug 28, 2010, at 5:33 AM, Phil Stanhope
you need thrift before you can use any of the clients built on top of
it. http://wiki.apache.org/cassandra/InstallThrift
On Sat, Aug 28, 2010 at 2:30 AM, cassam read cassamr...@gmail.com wrote:
Hi guys
I have tried cassandra 0.6.4 with replication factor 3 on 4 VM node .
everything
On Sat, 2010-08-28 at 13:00 +0530, cassam read wrote:
I have tried cassandra 0.6.4 with replication factor 3 on 4 VM node .
everything (column,super-column,
replication,failover) i tried was successful from cli.
But I am stucked with thrift client. How to access cassandra thrift.
Do i have to
I will be loadbalancing between nodes using HAProxy. Is this recommended?
Also is there a some sort of ping/health check uri available?
Thanks
Trunk
-Original Message-
From: Benjamin Black [...@b3k.us]
Received: 8/28/10 10:05 AM
To: user@cassandra.apache.org [u...@cassandra.apache.org]
Subject: Re: RowMutationVerbHandler.java (line 78) Error in row mutation
Todd,
Are you using beta1 or trunk code?
b
On Fri, Aug 27, 2010
On 8/28/10 11:20 AM, Benjamin Black wrote:
no and no.
On Sat, Aug 28, 2010 at 10:28 AM, Markstatic.void@gmail.com wrote:
I will be loadbalancing between nodes using HAProxy. Is this recommended?
Also is there a some sort of ping/health check uri available?
Thanks
Also, what would
Have you tried with beta1 and is there a repro you can put in a bug
report in jira?
On Sat, Aug 28, 2010 at 11:28 AM, Todd Burruss bburr...@real.com wrote:
Trunk
-Original Message-
From: Benjamin Black [...@b3k.us]
Received: 8/28/10 10:05 AM
To: user@cassandra.apache.org
Hi,
I'm currently executing some benchmarks against 0.6.5, which i plan to
compare against 0.7-beta1, using the YCSB client
I'm experiencing some strange behaviour when running a small 2 nodes cluster
using OrderPreservingPartitioner. Does anybody have any experience on using
the client to
Because you create a bottleneck at the HAProxy and because the
presence of the proxy precludes clients properly backing off from
nodes returning errors. The proper approach is to have clients
maintain connection pools with connections to multiple nodes in the
cluster, and then to spread requests
I think maybe he thought you meant put a layer between cassandra internal
communication. There's no problem balancing client connections with
haproxy, we've been pushing several billion requests per month through
haproxy to cassandra.
we use
mode tcp
balance leastconn
server local
munin is the simplest thing. There are numerous JMX stats of interest.
As a symmetric distributed system, you should not expect to monitor
Cassandra like you would a web server. Intelligent clients use
connection pools and react to current node behavior in making choices
of where to send
On Sat, Aug 28, 2010 at 2:34 PM, Anthony Molinaro
antho...@alumni.caltech.edu wrote:
I think maybe he thought you meant put a layer between cassandra internal
communication.
No, I took the question to be about client connections.
There's no problem balancing client connections with
haproxy,
cassandra.in.sh?
storage-conf.xml?
output of iostat -x while this is going on?
turn GC log level to debug?
On Sat, Aug 28, 2010 at 2:02 PM, Fernando Racca fra...@gmail.com wrote:
Hi,
I'm currently executing some benchmarks against 0.6.5, which i plan to
compare against 0.7-beta1, using the
cassandra.in.sh is default, just changed the jmx port
Storage.conf
Storage
ClusterNameBenchmark Cluster/ClusterName
AutoBootstraptrue/AutoBootstrap
HintedHandoffEnabledtrue/HintedHandoffEnabled
Keyspaces
Keyspace Name=usertable
ColumnFamily Name=data CompareWith=UTF8Type/
That means you only have a 1G heap. It's no surprise it dies (most
likely OOM; CMS runs are not inherently bad). Don't see immediately
why you are seeing the remote latency go up that high, but it is
unlikely yo be a Cassandra problem.
On Sat, Aug 28, 2010 at 4:01 PM, Fernando Racca
On Aug 28, 2010, at 12:29 PM, Mark wrote:
Also, what would be a good way of monitoring the health of the cluster?
We use Ganglia. I believe failover is usually built into clients. Not sure why
using HAProxy or LVS wouldn't be a good option though. I used to use it with
MySQL slaves with much
thanks for the updates, i'm going to increase memory for the nodes. as for
the remote latency, i'm puzzled
On 29 August 2010 00:54, Benjamin Black b...@b3k.us wrote:
That means you only have a 1G heap. It's no surprise it dies (most
likely OOM; CMS runs are not inherently bad). Don't see
On 8/28/10 2:44 PM, Benjamin Black wrote:
On Sat, Aug 28, 2010 at 2:34 PM, Anthony Molinaro
antho...@alumni.caltech.edu wrote:
I think maybe he thought you meant put a layer between cassandra internal
communication.
No, I took the question to be about client connections.
There's no problem
If you are reading and making decisions about what to write just remember there
are no transactions. You are essentially running at a Read Uncommitted level of
transaction isolation, with regard of batch mutations (a mutation for a single
row is atomic).
If you can it may be less headache to
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