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From Rodrigo Felix <rodrigofelixdealme...@gmail.com>
Subject Exception when running YCSB and Cassandra
Date Wed, 15 May 2013 01:59:36 GMT
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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