Re: Fwd: ReadTimeoutException in Cassandra 2.0.11

2015-01-23 Thread Steve Robenalt
Hi Neha, As far as I'm aware, 4GB of RAM is a bit underpowered for Cassandra even if there are no other processes on the same server (i.e. Tomcat and ActiveMQ). There are some general guidelines at http://wiki.apache.org/cassandra/CassandraHardware which should help you out. You may not need all

Re: Fwd: ReadTimeoutException in Cassandra 2.0.11

2015-01-23 Thread Neha Trivedi
Thanks a lot Steve. I suspected the same. I will definitely read. regards Neha On Fri, Jan 23, 2015 at 11:22 PM, Steve Robenalt sroben...@highwire.org wrote: Hi Neha, As far as I'm aware, 4GB of RAM is a bit underpowered for Cassandra even if there are no other processes on the same server

Re: Fwd: ReadTimeoutException in Cassandra 2.0.11

2015-01-22 Thread Neha Trivedi
Hello Everyone, Thanks very much for the input. Here is my System info. 1. I have single node cluster. (For testing) 2. I have 4GB Memory on the Server and trying to process 200B. ( 1GB is allocated to Tomcat7, 1 GB to Cassandra and 1 GB to ActiveMQ. Also nltk Server is running) 3. We are using

Re: Fwd: ReadTimeoutException in Cassandra 2.0.11

2015-01-22 Thread Asit KAUSHIK
There are some values for read timeout in Cassandra.yaml file and the default value is 3 ms change to a bigger value and that resolved our issue. Hope this helps Regards Asit On Jan 22, 2015 8:36 AM, Neha Trivedi nehajtriv...@gmail.com wrote: Hello All, I am trying to process 200MB file.

Re: Fwd: ReadTimeoutException in Cassandra 2.0.11

2015-01-22 Thread Robert Coli
On Thu, Jan 22, 2015 at 4:19 PM, Asit KAUSHIK asitkaushikno...@gmail.com wrote: There are some values for read timeout in Cassandra.yaml file and the default value is 3 ms change to a bigger value and that resolved our issue. Having to increase this value is often a strong signal you are

Re: Fwd: ReadTimeoutException in Cassandra 2.0.11

2015-01-22 Thread Steve Robenalt
I agree with Rob. You shouldn't need to change the read timeout. We had similar issues with intermittent ReadTimeoutExceptions for a while when we ran Cassandra on underpowered nodes on AWS. We've also seen them when executing unconstrained queries with very large ResultSets (because it takes

Fwd: ReadTimeoutException in Cassandra 2.0.11

2015-01-21 Thread Neha Trivedi
Hello All, I am trying to process 200MB file. I am getting following Error. We are using (apache-cassandra-2.0.3.jar) com.datastax.driver.core. exceptions.ReadTimeoutException: Cassandra timeout during read query at consistency ONE (1 responses were required but only 0 replica responded) 1. Is it