Even with https://issues.apache.org/jira/browse/CASSANDRA-7386 data
balancing across JBOD setups is pretty horrible. Having used JBOD for
about 2 years from 1.2.x and up, it is my opinion JBOD on Cassandra is
nascent at best and far from mature. For a variety of reasons, JBOD should
perform bette
ors
limits, similar to how pipes, sockets, etc can count against file
descriptor limits.
On Tue, May 12, 2015 at 7:55 PM, J. Ryan Earl wrote:
> What's your ulimit -a output? Did you adjust nproc and nofile ulimits
> up? Do you have JNA installed? What about memlock ulimit and in
> sysc
What's your ulimit -a output? Did you adjust nproc and nofile ulimits up?
Do you have JNA installed? What about memlock ulimit and in sysctl.conf =>
kernel.shmmax?
What's in cassandra.log?
On Mon, May 11, 2015 at 7:24 AM, Rahul Bhardwaj <
rahul.bhard...@indiamart.com> wrote:
> Hi Robert,
>
> I
We think it is this bug:
https://issues.apache.org/jira/browse/CASSANDRA-8860
We're rolling a patch to beta before rolling it into production.
On Wed, Mar 4, 2015 at 4:12 PM, graham sanderson wrote:
> We can confirm a problem on 2.1.3 (sadly our beta sstable state obviously
> did not match our
quot;
>
> and at the bottom
>
> "If you can't install using Yum or it provides a version of the JNA
> earlier than 3.2.7, install as described in Installing the JNA from the JAR
> file."
>
> Which version of OS and Cassandra are you running?
>
> thanks,
We've been using jna-3.2.4-2.el6.x86_64 with the Sun/Oracle JDK for
probably 2-years now, and it works just fine. Where are you seeing 3.2.7
required at? I searched the pages you link and that string isn't even in
there.
Regardless, I assure you the newest jna that ships in the EL6 repo works
wi
What's the 'ulimit -a' output of the user cassandra runs as? From this and
your previous OOM thread, is sounds like you skipped the requisite OS
configuration.
On Wed, Sep 17, 2014 at 9:43 AM, Yatong Zhang wrote:
> Hi there,
>
> I am using leveled compaction strategy and have many sstable files
On Wed, Sep 17, 2014 at 8:35 PM, Yatong Zhang wrote:
> @Chris Lohfink I have 16G memory per node, all the other settings are
> default
>
> @J. Ryan Earl I am not sure. I am using the default settings.
>
> But I've found out it might be because some settings in
>
Are you using JNA? Did you adjust your memlock limit?
On Tue, Sep 16, 2014 at 9:46 AM, Chris Lohfink
wrote:
> How much memory does your system have? How much memory is system utilizing
> before starting Cassandra (use command free)? What are the heap setting it
> tries to use?
>
> Chris
>
> On
Yes, definitely look how many open files are actual file handles versus
networks sockets. We found a file handle leak in 2.0 but it was patched in
2.0.3 or .5 I think. A million open files is way too high.
On Fri, Aug 8, 2014 at 5:19 PM, Andrey Ilinykh wrote:
> You may have this problem if yo
Why did you switch to RandomPartitioner away from Murmur3Partitioner? Have
you tried with Murmur3?
1. # partitioner: org.apache.cassandra.dht.Murmur3Partitioner
2. partitioner: org.apache.cassandra.dht.RandomPartitioner
On Fri, Dec 6, 2013 at 10:36 AM, srmore wrote:
>
>
>
> On Fri, De
On Thu, Dec 5, 2013 at 6:33 AM, Alexander Shutyaev wrote:
> We've plugged it into our production environment as a cache in front of
> postgres. Everything worked fine, we even stressed it by explicitly
> propagating about 30G (10G/node) data from postgres to cassandra.
>
If you just want a cachin
There was a bug introduced in 2.0.0-beta1 related to TTL, a patch just came
available in: https://issues.apache.org/jira/browse/CASSANDRA-6275
On Thu, Nov 7, 2013 at 5:15 AM, Murthy Chelankuri wrote:
> I have experimenting cassandra latest version for storing the huge the in
> our application.
>
First off, I'm curious what hardware (system specs) you're running this on?
Secondly, here are some observations:
* You're not running the newest JDK7, I can tell by your stack-size.
Consider getting the newest.
* Cassandra 2.0.2 has a lot of improvements, consider upgrading. We
noticed improve
Are you doing QUORUM reads instead of LOCAL_QUORUM reads?
On Wed, Oct 9, 2013 at 7:41 PM, Chris Burroughs
wrote:
> I have not been able to do the test with the 2nd cluster, but have been
> given a disturbing data point. We had a disk slowly fail causing a
> significant performance degradation t
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