Re: Behavior difference between 2.0 and 2.1

You didn’t specify which version of 2.0 you were on. There were a number of inconsistencies with static columns fixed in 2.0.10 for example CASSANDRA-7490, and CASSANDRA-7455, but there were others, and the same bugs may have caused a bunch of other issues. It very much depends exactly how you

Re: Issues on upgrading from 2.2.3 to 3.0

You can migrate from the RackInferingSnitch to PropertiesFileSnitch by populating the cassandra-topology.properties with the same rack/dc assignments of the previous snitch (what you can't change is the assignment, but you can change snitches if you maintain the same assignments as before). For

RE: cassandra reads are unbalanced

Thanks but keep in mind that both DC should be getting the same load, our production applications are behind a round robin load balancer – so each one our local application talk to its local Cassandra DataCenter. It took about 4 hours but the nodetool cleanup eventually balanced all nodes

Rebuilding a new Cassandra node at 100Mb/s

Hi, I added a new node to my cluster but in a new datacenter. After updating the keyspace replication factor values (using the NetworkTopologyStrategy strategy), I'm now running a "nodetool rebuild" on the new node. I noticed it's not really fast and my monitoring system shows that the

cassandra-stress 2.1: Generating data

Hi, I'm trying to insert data with Cassandra-stress into cluster C* with 6 nodes: node001006 The stress-tool is executed on a different machine (gen01) specifying one of 6 nodes: tools/bin/cassandra-stress user profile=cf.yml ops\(insert=1\) n=500 -mode thrift -node node001 -rate

Re: cassandra reads are unbalanced

How many clients do you have performing reads? Is your load balancer in front of your clients or between your clients and Cassandra? Does Node1 of DC2 have the exact same configuration of hardware of the other nodes? Is it in the same rack? Maybe your load balancer thinks that node is more

Re: cassandra-stress 2.1: Generating data

The data is only being inserted from gen01 On Thu, Dec 3, 2015 at 10:52 AM, wrote: > Hi, > > > > I’m trying to insert data with Cassandra-stress into cluster C* with 6 > nodes: *node001….006* > > > > The stress-tool is executed on a different machine (*gen01*) specifying

Re: Rebuilding a new Cassandra node at 100Mb/s

On Thu, Dec 3, 2015 at 7:51 AM, Jonathan Ballet wrote: > I noticed it's not really fast and my monitoring system shows that the > traffic incoming on this node is exactly at 100Mb/s (12.6MB/s). I know it > can be much more than that (I just tested sending a file through SSH >

Getting a lot of "nothing needed to be retained" INFO

Hi I am on Cassandra 1.2.19 and we are running OpsCenter 5.1.4 (and agent 5.1.4). We recently started to observe high load occurring in our dev cluster. There was some small spikes in terms of amount of requests going into the cluster so we are not ruling out that possibility. What we see is we

Re: Rebuilding a new Cassandra node at 100Mb/s

Jonathan: Have you changed stream_throughput_outbound_megabits_per_sec in cassandra.yaml? # Throttles all outbound streaming file transfers on this node to the # given total throughput in Mbps. This is necessary because Cassandra does # mostly sequential IO when streaming data during bootstrap or

Re: Getting a lot of "nothing needed to be retained" INFO

On 12/03/2015 03:49 PM, John Wong wrote: > Hi > > I am on Cassandra 1.2.19 and we are running OpsCenter 5.1.4 (and agent > 5.1.4). > > We recently started to observe high load occurring in our dev cluster. > There was some small spikes in terms of amount of requests going into > the cluster so

Behavior difference between 2.0 and 2.1

With this schema: CREATE TABLE roll ( id INT, image BIGINT, data VARCHAR static, PRIMARY KEY ((id), image) ) WITH gc_grace_seconds = 3456000 AND compaction = { 'class' : 'LeveledCompactionStrategy', 'sstable_size_in_mb' : 160 }; if I run SELECT image FROM roll WHERE id = X on 2.0, where

Re: cassandra-stress 2.1: Generating data

You can run stress from a separate machine to isolate that impact. All the best, [image: datastax_logo.png] Sebastián Estévez Solutions Architect | 954 905 8615 | sebastian.este...@datastax.com [image: linkedin.png]