Re: Frequency of Flushing in 1.0

2012-02-28 Thread Xaero S
in the sstable have been flushed. > But commitlog_total_space_in_mb is the correct way to control that. > > Hope that helps. > > - > Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 27/02/2012, at 4:48 PM, Xaero S wrot

Re: Frequency of Flushing in 1.0

2012-02-26 Thread Xaero S
The challenge that we face is that our commitlog disk capacity is much much less (under 10 GB in some cases) than the disk capacity of SSTables. So we cannot really have the commitlog data continuously growing. This is the reason that we need to be able to tune the the way we flush the memtables. >

Frequency of Flushing in 1.0

2012-02-23 Thread Xaero S
I recently started using Cassandra 1.0.4 and observed that it takes a lot longer to flush the commit logs to SSTables, than was observed in versions 0.7.X and 0.8.X under constant load conditions with commitlog_sync as periodic and commitlog_sync_period_in_ms as 1. As more data gets retained in

Encrypting traffic between Hector client and Cassandra server

2012-01-31 Thread Xaero S
I have been trying to figure out how to secure/encrypt the traffic between the client (Hector) and the Cassandra Server. I looked at this link https://issues.apache.org/jira/browse/THRIFT-106 But since thrift sits on a layer after Hector, i am wondering how i can get Hector to use the right Thrift

CFHistograms?

2011-05-05 Thread Xaero S
Can someone point me to a document that explains how to interpret CFHistograms output? i went through http://narendrasharma.blogspot.com/2011/04/cassandra-07x-understanding-output-of.htmlwhich is a good beginning, but was wondering if there was anything more detailed. For e.g when i run CFHistogram

Re: Dropping a built in secondary index on a CF

2011-04-27 Thread Xaero S
Hi, You just need to use the update column family command on the cassandra-cli and specify the columns and their metadata. To get the metadata of the columns in the CF, you can do describe keyspace . Keep in mind that, in your update CF command, the other columns that must continue to have the sec