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From aaron morton <aa...@thelastpickle.com>
Subject Re: Exception when running YCSB and Cassandra
Date Thu, 16 May 2013 23:27:54 GMT
You're nodes are overloaded. 

I'd recommend using m1.xlarge instead. 

Cheers

-----------------
Aaron Morton
Freelance Cassandra Consultant
New Zealand

@aaronmorton
http://www.thelastpickle.com

On 15/05/2013, at 1:59 PM, Rodrigo Felix <rodrigofelixdealmeida@gmail.com> wrote:

> Hi,
> 
>    I'm executing a workload on YCSB (50% read, 50% update) and after few minutes I get
the following exception:
> 
> TimedOutException()
> 	at org.apache.cassandra.thrift.Cassandra$get_slice_result.read(Cassandra.java:7174)
> 	at org.apache.cassandra.thrift.Cassandra$Client.recv_get_slice(Cassandra.java:540)
> 	at org.apache.cassandra.thrift.Cassandra$Client.get_slice(Cassandra.java:512)
> 	at com.yahoo.ycsb.db.CassandraClient10.read(CassandraClient10.java:259)
> 	at com.yahoo.ycsb.DBWrapper.read(DBWrapper.java:84)
> 	at com.yahoo.ycsb.workloads.CoreWorkload.doTransactionRead(CoreWorkload.java:469)
> 	at com.yahoo.ycsb.workloads.CoreWorkload.doTransaction(CoreWorkload.java:425)
> 	at com.yahoo.ycsb.ClientThread.run(ClientThread.java:105) 
> 
>    I have 2 seeds on Amazon EC2 (large instance) and depending on the demand, I add (or
remove) new large instances.
>    Any suggestion to solve this problem or to tune cassandra?
>    Follows further info about cassandra installed. 
>    Thanks in advance.
> 
> INFO 00:54:05,591 JVM vendor/version: Java HotSpot(TM) 64-Bit Server VM/1.7.0_07
>  INFO 00:54:05,592 Heap size: 1931476992/1931476992
> INFO 00:54:07,447 Cassandra version: 1.1.5
>  INFO 00:54:07,448 Thrift API version: 19.32.0
> 
> Att.
> 
> Rodrigo Felix de Almeida
> LSBD - Universidade Federal do CearĂ¡
> Project Manager
> MBA, CSM, CSPO, SCJP


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