Re: cassandra for a inbox search with high reading qps

2010-08-19 Thread Oleg Anastasjev
Chen Xinli chen.daqi at gmail.com writes: Hi, Despite our use cases, is't it a good feature to disable reading when a node is doing hinted handoff, just like bootstraping? It will be very useful for READ ONE consitency level. Or it can be an option in storage-conf.xml, and user can set

Write Apache Cassandra Book for Packt Publishing!

2010-08-19 Thread Sunny Kansara
Hi, I am an author recruiter at Packt Publishing (www.packtpub.com). We publish computer-related books on a wide variety of IT topics. We are planning to publish a new book on Apache Cassandra. _Details of the Book:_ Title: *_Apache Cassandra 0.6 Beginners Guide._* It is planned to be a

Re: cassandra for a inbox search with high reading qps

2010-08-19 Thread Chen Xinli
2010/8/19 Oleg Anastasjev olega...@gmail.com Chen Xinli chen.daqi at gmail.com writes: Hi, Despite our use cases, is't it a good feature to disable reading when a node is doing hinted handoff, just like bootstraping? It will be very useful for READ ONE consitency level. Or it

questions regarding read and write in cassandra

2010-08-19 Thread Maifi Khan
Hi I have a question in the following scenario. Say we have 10 nodes, Replication factor is 5. Now, say, for Row X, Column Y, data is replicated to node 1,2,3,4,5 and current value is 10 Say, I issue a write command with value “20” to Row X, column Y with quorum(n/2+1=3 nodes). Say it updated 1

Re: questions regarding read and write in cassandra

2010-08-19 Thread David Timothy Strauss
The quorum write would fail, but the data would not be rolled back. Assuming the offline nodes recover, the data would eventually replicate. This question belongs on the user list, though. -Original Message- From: Maifi Khan maifi.k...@gmail.com Date: Thu, 19 Aug 2010 13:00:47 To:

Re: questions regarding read and write in cassandra

2010-08-19 Thread Maifi Khan
Hi David Thanks for your reply. But what happens if I read and get 2 nodes has value 10 with older time stamp and the third node has 20 with more recent time stamp? Will cassandra return 10(majority) or 20(more recent)? thanks Maifi On Thu, Aug 19, 2010 at 1:20 PM, David Timothy Strauss

Re: cassandra for a inbox search with high reading qps

2010-08-19 Thread Rob Coli
On 8/19/10 7:18 AM, Chen Xinli wrote: 2010/8/19 Oleg Anastasjevolega...@gmail.com Chen Xinlichen.daqiat gmail.com writes: Hi, Despite our use cases, is't it a good feature to disable reading when a node is doing hinted handoff, just like bootstraping? It will be very useful for READ