RE: Data rebalancing algorithm

2016-01-07 Thread Alec Collier
Have a look at this: http://www.datastax.com/dev/blog/virtual-nodes-in-cassandra-1-2 The vnodes mechanism is there to provide better scalability as new nodes are added/removed, by allowing a single node to own several small chunks of the token range. Aside from that, the process is exactly the

RE: I am a Datastax certified Cassandra architect now :)

2015-11-22 Thread Alec Collier
Congrats Prem! I’m planning to go for it next month… any tips? Alec From: Prem Yadav [mailto:ipremya...@gmail.com] Sent: Monday, 23 November 2015 5:01 AM To: user@cassandra.apache.org Subject: I am a Datastax certified Cassandra architect now :) Just letting the community know that I just passe

RE: Order By limitation or bug?

2015-09-03 Thread Alec Collier
ly filtered by type. Alec Collier | Workplace Service Design Corporate Operations Group - Technology | Macquarie Group Limited * From: Robert Wille [mailto:rwi...@fold3.com] Sent: Friday, 4 September 2015 7:17 AM To: user@cassandra.apache.org Subject: Re: Order By limitation or bug? If you o

RE: Question: Coordinator in cassandra

2015-08-18 Thread Alec Collier
Hi Thouraya, In all versions of Cassandra, each query will have one coordinator. Any node in the cluster can be the coordinator and this is choice is made by the client/driver. The coordinator may or may not have a replica of the data being requested. Cheers, Alec Collier | Workplace Service

RE: Schema questions for data structures with recently-modified access patterns

2015-07-22 Thread Alec Collier
is usually not recommended because it means all writes on a given date will be hitting one node. Perhaps Solr integration is the way to go for this access pattern? Alec Collier From: Jack Krupansky [mailto:jack.krupan...@gmail.com] Sent: Thursday, 23 July 2015 8:20 AM To: user