> Looks like the launch script did not pickup the MongoDB binding jar.

> Make sure it exists in the mongodb/target/ sub-directory and is named
> something like mongodb-binding-0.1.4.jar.

> If not check the output form the mvn package for compile errors.

> Rob.

> On Sunday, September 16, 2012 1:58:25 AM UTC-4, Rushmila Islam wrote:

>> Hi,
>> I am trying to run the the bench-marking tool YCSB over MongoDB to
>> analyze the performance of MongoDB.
>> But whenever I'm running the load it gives error. Any idea or suggestion
>> regarding this issue.
>> I am using the  following version of mongodb.

>> db version v1.8.1, pdfile version 4.5
>> Sat Sep 15 22:55:41 git version: a429cd4f535b2499cc4130b06ff7c2**
>> 6f41c00f04

>> Error log --

>> root@ubuntu:/etc/init.d# /etc/init.d/mongod start
>>  * Starting database MongoDB
>>               [ OK ]
>> root@ubuntu:/etc/init.d# cd /home/rushmila/YCSB/
>> root@ubuntu:/home/rushmila/**YCSB# ./bin/ycsb load mongodb -s -P
>> workloads/workloada
>> java -cp /home/rushmila/YCSB/build/**ycsb.jar:/home/rushmila/YCSB/**
>> core/target/core-0.1.4.jar:/**home/rushmila/YCSB/hbase/src/**
>> main/conf:/home/rushmila/YCSB/**voldemort/src/main/conf:/home/**
>> rushmila/YCSB/jdbc/src/main/**conf:/home/rushmila/YCSB/**
>> dynamodb/conf:/home/rushmila/**YCSB/gemfire/src/main/conf:/**
>> home/rushmila/YCSB/infinispan/**src/main/conf:/home/rushmila/**
>> YCSB/db/hbase/conf:/home/**rushmila/YCSB/db/jdbc/conf:/**
>> home/rushmila/YCSB/db/**infinispan-5.0/conf:/home/**
>> rushmila/YCSB/lib/jackson-**core-asl-1.5.2.jar:/home/**
>> rushmila/YCSB/lib/jackson-**mapper-asl-1.5.2.jar:/home/**
>> rushmila/YCSB/nosqldb/src/**main/conf com.yahoo.ycsb.Client -db
>> com.yahoo.ycsb.db.**MongoDbClient -s -P workloads/workloada -load
>> YCSB Client 0.1
>> Command line: -db com.yahoo.ycsb.db.**MongoDbClient -s -P
>> workloads/workloada -load
>> Loading workload...
>> Starting test.
>> java.lang.**ClassNotFoundException: com.yahoo.ycsb.db.**MongoDbClient
>>         at java.net.URLClassLoader$1.run(**URLClassLoader.java:217)
>>         at java.security.**AccessController.doPrivileged(**Native Method)
>>         at java.net.URLClassLoader.**findClass(URLClassLoader.java:**205)
>>         at java.lang.ClassLoader.**loadClass(ClassLoader.java:**321)
>>         at sun.misc.Launcher$**AppClassLoader.loadClass(**
>> Launcher.java:294)
>>         at java.lang.ClassLoader.**loadClass(ClassLoader.java:**266)
>>         at com.yahoo.ycsb.DBFactory.**newDB(Unknown Source)
>>         at com.yahoo.ycsb.Client.main(**Unknown Source)
>> Exception in thread "Thread-1" java.lang.NullPointerException
>>         at com.yahoo.ycsb.ClientThread.**run(Unknown Source)
>> [OVERALL], RunTime(ms), 21.0

>> *Regards,*
>> *Rushmila Islam*

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