configure KeyCahce to use Non-Heap memory ?

Is there any way I can configure KeyCahce to use Non-Heap memory ? We have large memory nodes : ~96GB memory per node and effectively using only 8 GB configured for heap ( to avoid GC issues because of a large heap) We have a constraint with respect to : 1. Row cache models don't reflect o

Re: configure KeyCahce to use Non-Heap memory ?

teresting to know how many keys it contains Vs the number of rows on the box and the hit rate. Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 4/09/2012, at 3:01 PM, Ananth Gundabattula mailto:agundabatt...@threatmetrix.com>> wrote: I

Re: read request distribution

Hi all, On an unrelated observation of the below readings, it looks like all the 3 nodes own 100% of the data. This confuses me a bit. We have a 12 node cluster with RF=3 but the effective ownership is shown as 8.33 % . So here is my question. How is the ownership calculated : Is Replica factor c

Re: Query regarding SSTable timestamps and counts

uch > younger than the older SSTables ( > > No problems. > > 4. Does a upgradesstables fix any compaction issues ? > > What are the compaction issues you are having ? > > > Cheers > > ----- > Aaron Morton > Freelance Cassandra Developer > New Zealan

Re: Query regarding SSTable timestamps and counts

very sstable to have the same contents in the > > newest format. > > > > Cheers > > > > - > > Aaron Morton > > Freelance Cassandra Developer > > New Zealand > > > > @aaronmorton > > http://www.thelastpickle.com > > > >

What is the effect of reducing the thrift message sizes on GC

We are currently running on 1.1.10 and planning to migrate to a higher version 1.2.4. The question pertains to tweaking all the knobs to reduce GC related issues ( we have been fighting a lot of really bad GC issues on 1.1.10 and met with little success all the way using 1.1.10) Taking into cons

Re: What is the effect of reducing the thrift message sizes on GC

nodetool upgradesstables > >Then consider increasing the index_interval in the yaml file, see the >comments. > >Note that v 1.2 moves the bloom filters off heap, so if you upgrade to >1.2 it will probably resolve your issues. > >Cheers > >- >

Upgrade from 1.1.10 to 1.2.4

Hello everybody, I am trying to perform a rolling upgrade from 1.1.10 to 1.2.4 ( with two patches to 1.2.4 https://issues.apache.org/jira/browse/CASSANDRA-5554 https://issues.apache.org/jira/browse/CASSANDRA-5418 as they might effect us in production ) I was wondering if anyone was able to perf

Re: Upgrade from 1.1.10 to 1.2.4

anything causes the above error. Regards, Ananth From: Ananth Gundabattula mailto:agundabatt...@threatmetrix.com>> Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" mailto:user@cassandra.apache.org>> Date: Sunday, June 23, 2013 1:25 PM To: "user

Merge two clusters into one - renaming an existing cluster

Hello Everybody, I am trying to merge two clusters into a single cluster ( the rationale being easier administration apart from better load balancing etc) The plan is to rename a cluster (QAPERF1) as the same name as the second cluster (QAPERF2). Then alter the cassandra-toppology.properties an

Re: Upgrade from 1.1.10 to 1.2.4

. I was able to get past that exception only when num_token was specified with a value of 1. Regards, Ananth On 6/25/13 3:27 AM, "Robert Coli" wrote: >On Sun, Jun 23, 2013 at 2:31 AM, Ananth Gundabattula > wrote: >> Looks like the cause of the error was bec

Errors while upgrading from 1.1.10 version to 1.2.4 version

Hello Everybody, We were performing an upgrade of our cluster from 1.1.10 version to 1.2.4 . We tested the upgrade process in a QA environment and found no issues. However in the production node, we faced loads of errors and had to abort the upgrade process. I was wondering how we ran into suc

Re: Errors while upgrading from 1.1.10 version to 1.2.4 version

<mailto:user@cassandra.apache.org>" mailto:user@cassandra.apache.org>> Subject: Re: Errors while upgrading from 1.1.10 version to 1.2.4 version Hello, Have a look at : https://issues.apache.org/jira/browse/CASSANDRA-5476 2013/6/28 Ananth Gundabattula mailto:agundabatt...@threatme

Re: Migrating data from 2 node cluster to a 3 node cluster

Hello everybody, The thread below makes me wonder "Does RF matter when using sstable loader.?" My assumption was that stable loader will take care of RF when the streaming is done but just wanted to cross check. We are currently moving data from a RF=1 to RF=3 cluster by using sstable loader t

Re: Rhombus - A time-series object store for Cassandra

Hello Rob, Thanks for the pointer. I have a couple of queries: >How does this project compare to the KairosDb project on github ( For one >I see that Rhombus supports multi column query which is cool whereas >kairos time series DB/OpenTSDB do not seem to have such a feature - >although we can use

Re: Rhombus - A time-series object store for Cassandra

-- Aaron Morton Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 13/07/2013, at 4:01 PM, Ananth Gundabattula mailto:agundabatt...@threatmetrix.com>> wrote: Hello Rob, Thanks for the pointer. I have a couple of queries: How does this project compare to t