Re: 1000's of column families

2012-09-28 Thread Hiller, Dean
I thought someone was saying each column family added to RAM on every node not RAM on a single node. It adds RAM on every node??? So eventually, I will run out? Was that person wrong? This would mean adding nodes does not help if he is right. Can anyone confirm this? Thanks, Dean From:

Re: 1000's of column families

2012-09-28 Thread Robin Verlangen
I think I misunderstood your all data in one location note. I thought you meant to store it all in one CF. Best regards, Robin Verlangen *Software engineer* * * W http://www.robinverlangen.nl E ro...@us2.nl http://goo.gl/Lt7BC Disclaimer: The information contained in this message and

Re: Running repair negatively impacts read performance?

2012-09-28 Thread Charles Brophy
Odd indeed. 1) It is observable after the compactions are through and the system has settled 2) We're using SizeTiered strategy 3) CentOS 6 Oracle JVM 1.6.31 I'll do a repair and get some before/after stats to answer your remaining questions. Thanks Aaron On Wed, Sep 26, 2012 at 2:51 PM,

Re: compression

2012-09-28 Thread Tamar Fraenkel
Hi! The situation didn't resolve, does anyone has a clue? Thanks *Tamar Fraenkel * Senior Software Engineer, TOK Media [image: Inline image 1] ta...@tok-media.com Tel: +972 2 6409736 Mob: +972 54 8356490 Fax: +972 2 5612956 On Thu, Sep 27, 2012 at 10:42 AM, Tamar Fraenkel

Re: 1000's of column families

2012-09-28 Thread Aaron Turner
Yeah, you can't scale the number of CF's by adding new nodes to a cluster. You have to create multiple clusters. Anyways, I was thinking about your problem and the solution seems to be give each team/project their own CF and have them use composite row keys as I wrote about earlier. Yes that

Re: 1000's of column families

2012-09-28 Thread Flavio Baronti
We had some serious trouble with dynamically adding CFs, although last time we tried we were using version 0.7, so maybe that's not an issue any more. Our problems were two: - You are (were?) not supposed to add CFs concurrently. Since we had more servers talking to the same Cassandra cluster,

Re: Help for creating a custom partitioner

2012-09-28 Thread Tim Wintle
On Fri, 2012-09-28 at 18:20 +0200, Clement Honore wrote: Hi, ** ** I have hierarchical data. I'm storing them in CF with rowkey somewhat like (category, doc id), and plenty of columns for a doc definition. ** ** I have hierarchical data traversal too. The user

Remove node from cluster and have it run as a single node cluster by itself

2012-09-28 Thread Xu, Zaili
Hi, I have an existing Cassandra Cluster. I removed a node from the cluster. Then I decommissioned the removed node, stopped it, updated its config so that it only has itself as the seed and in the cassandra-topology.properties file, even deleted the data, commitlog, and saved_caches. But as

stream throughput

2012-09-28 Thread Senthilvel Rangaswamy
How can I see the current value of streamthroughput setting ? -- ..Senthil If there's anything more important than my ego around, I want it caught and shot now. - Douglas Adams.