Re: Configuring Cassandra to limit number of columns to read

2015-08-17 Thread Jonathan Haddad
Also, are you using Thrift? The terminology you're using, specifically column keys, suggests you are. On Mon, Aug 17, 2015 at 5:21 PM Jonathan Haddad wrote: > What version of Cassandra are you running? > > On Fri, Aug 14, 2015 at 11:35 AM Ahmed Ferdous > wrote: > >> My mistake. I wanted to mea

Re: Configuring Cassandra to limit number of columns to read

2015-08-17 Thread Jonathan Haddad
What version of Cassandra are you running? On Fri, Aug 14, 2015 at 11:35 AM Ahmed Ferdous wrote: > My mistake. I wanted to mean column keys. For each row, we have one column > and for this column we have 250k+ column keys. When we are trying to load > the list of column keys , Cassandra is havin

Re: Parallel repairs

2015-08-17 Thread Robert Coli
On Mon, Aug 17, 2015 at 1:37 PM, Stan Lemon wrote: > I have not changed the throttle compaction value for our cluster. I've not > been sure how to gauge where I can I take this value. Any guidance here > would be extremely appreciated. > If you have SSDs, probably just set it to 0? =Rob >

Re: Parallel repairs

2015-08-17 Thread Stan Lemon
On Mon, Aug 17, 2015 at 2:31 PM, Robert Coli wrote: > Have you unthrottled compaction and etc.? 10 days is a long time... > I have not changed the throttle compaction value for our cluster. I've not been sure how to gauge where I can I take this value. Any guidance here would be extremely appre

Need advice on a highly available job scheduler for spark jobs on Cassandra cluster

2015-08-17 Thread Vikram Kone
Hi. I'm looking at existing open source workflow engines we can use for scheduling spark jobs with intricate dependencies on a datastax cassandra cluster. Currently we are using crontab to schedule jobs and want to move to something which is more robust and highly available. There are 2 main probl

Re: Need advice for multi DC C* setup

2015-08-17 Thread Aiman Parvaiz
Over the weekend and after some more looking around and following this old mailing list post https://mail-archives.apache.org/mod_mbox/incubator-cassandra-user/201406.mbox/%3cca+vsrlopop7th8nx20aoz3as75g2jrjm3ryx119deklynhq...@mail.gmail.com%3E I was able to get my 2 node test env to move to over

Re: Parallel repairs

2015-08-17 Thread Robert Coli
On Mon, Aug 17, 2015 at 8:50 AM, Stan Lemon wrote:, > > Thanks for the reply. I do have vnodes. I was not aware of the -par flag > on the repair command, I was actually referring to have repair run on both > nodes A & B at the same time. It sounds like though, that I should > probably be using

Re: Parallel repairs

2015-08-17 Thread Stan Lemon
Rob, Thanks for the reply. I do have vnodes. I was not aware of the -par flag on the repair command, I was actually referring to have repair run on both nodes A & B at the same time. It sounds like though, that I should probably be using this -par flag but to do it per node sequentially one afte

timout connections from opscenter

2015-08-17 Thread Paco Trujillo
Hi Our opscenter can not connect to the nodes, in the logs the next error appears: 2015-08-17 08:56:37+0200 [SNPaware_Cluster] INFO: Nodes with agents that appear to be no longer running: 172.31.7.245, 172.31.7.244, 172.31.7.247, 172.31.7.246, 172.31.7.243 2015-08-17 08:56:37+0200 [SNPaware_Cl