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 agundabatt...@threatmetrix.commailto:agundabatt...@threatmetrix.com wrote: Hello Rob, Thanks for the pointer. I have a couple of queries: How does

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: 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

Re: Errors while upgrading from 1.1.10 version to 1.2.4 version

@cassandra.apache.org user@cassandra.apache.orgmailto: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 agundabatt

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

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 rc...@eventbrite.com wrote: On Sun, Jun 23, 2013 at 2:31 AM, Ananth Gundabattula agundabatt...@threatmetrix.com wrote: Looks like the cause

Re: Upgrade from 1.1.10 to 1.2.4

anything causes the above error. Regards, Ananth From: Ananth Gundabattula agundabatt...@threatmetrix.commailto:agundabatt...@threatmetrix.com Reply-To: user@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Date: Sunday, June 23, 2013 1

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

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

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

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

that v 1.2 moves the bloom filters off heap, so if you upgrade to 1.2 it will probably resolve your issues. Cheers - Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 18/06/2013, at 7:30 PM, Ananth Gundabattula agundabatt

Re: Query regarding SSTable timestamps and counts

- Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 19/11/2012, at 4:57 PM, Ananth Gundabattula agundabatt...@gmail.com wrote: Hello Aaron, Thanks a lot for the reply. Looks like the documentation

Re: Query regarding SSTable timestamps and counts

are having ? Cheers - Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 18/11/2012, at 1:18 AM, Ananth Gundabattula agundabatt...@gmail.com wrote: We have a cluster running cassandra 1.1.4. On this cluster, 1. We had

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

Re: configure KeyCahce to use Non-Heap memory ?

be interesting 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 agundabatt...@threatmetrix.commailto:agundabatt

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