Re: When to use STCS/DTCS/LCS

Hi Divya. There is a SubQuery implementation available, in Git repository . You can do some more enhancement to make it to be useful for production. https://github.com/jobmthomas/Cassandra-SubQuery From: Divya Divs Sent: Thursday, April 9, 2015 9:00:43 PM To: u

Re: Cassandra feature enhancement

Hi Divya. There is a SubQuery implementation available, in Git repository . You can do some enhancement to make it to be useful for production. https://github.com/jobmthomas/Cassandra-SubQuery [https://avatars2.githubusercontent.com/u/4040100?v=3&s=400]

Re: cassandra source code

Hi, Cassandra Demon found in org/apache/cassandra/service/CassandraDaemon.java This contain Main() method also. From: Divya Divs Sent: Tuesday, March 24, 2015 10:59 AM To: user@cassandra.apache.org; Jason Wee; Eric Stevens Subject: cassandra source code Hi I

Cassandra : Sub-Query Implementation

An implementation of SubQuery in Cassandra http://cassandrapowerfulnosql.blogspot.in/2015/03/sub-query-in-cassandra.html Cassandra: A Powerful NoSql: Cassandra : Sub-Query Implementation Cassandra : Implementation of sub-query Read more...

RE: sharding vs what cassandra does

Hi, If we think it the perspective of column family (table), its rows are split into different nodes(Sharding) based on ring concept in Cassandra. But the core unit of data storage (rows) id not spit across nodes, only copy is maintained in different rows. All column associated to a single r

RE: Throughput Vs Latency

ghput Vs Latency Hi Thomas, I am little confused when you say multithreaded client. Actually we don't explicitly invoke read on multiple servers (for replicated data) from the client code. So how does multithreaded client fix this? Thanks Ajay On Fri, Dec 26, 2014 at 12:08 PM, Job

RE: Throughput Vs Latency

Subject: Re: Throughput Vs Latency Thanks Thomas for the clarification. If I use the Consistency level of QUORUM for Read and Write, the Latency would affect the Throughput right? Thanks Ajay On Fri, Dec 26, 2014 at 11:15 AM, Job Thomas wrote: Hi, First of

RE: Throughput Vs Latency

Hi, First of all,the write latency of cassandra is not high(Read is high). The high throughput is achieved through distributes read and write. Your doubt ( If Latency is more how come the Throughput is high ) is some what right if you put high consistency to both read and write. You will

RE: Reading SSTables Potential File Descriptor Leak 1.2.18

Hi, It look like the offset in keycache is wrong !!. refresh the keycache may solve the issue. Thanks & Regards Job M Thomas Platform & Technology From: Tim Heckman [mailto:t...@pagerduty.com] Sent: Wed 9/24/2014 6:17 AM To: user@cassandra.apache.org Subject

Cassandra -What is really happens once Key-cache get filled

Consider that I have configured 1 Mb of key-cache (Consider it can hold 13000 of keys ). Then I wrote some records in a column family(say 2). Then read it at first (All keys sequentially in the same order used to write ), and keys are started to stored in key-cache. When the read reached @