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Quick Start

This section describes how to run YCSB on MongoDB.

1. Start MongoDB

First, download MongoDB and start mongod. For example, to start MongoDB on x86-64 Linux box:

wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-x.x.x.tgz
tar xfvz mongodb-linux-x86_64-*.tgz
mkdir /tmp/mongodb
cd mongodb-linux-x86_64-*
./bin/mongod --dbpath /tmp/mongodb

Replace x.x.x above with the latest stable release version for MongoDB. See http://docs.mongodb.org/manual/installation/ for installation steps for various operating systems.

2. Install Java and Maven

Go to http://www.oracle.com/technetwork/java/javase/downloads/index.html

and get the url to download the rpm into your server. For example:

wget http://download.oracle.com/otn-pub/java/jdk/7u40-b43/jdk-7u40-linux-x64.rpm?AuthParam=11232426132 -o jdk-7u40-linux-x64.rpm
rpm -Uvh jdk-7u40-linux-x64.rpm

Or install via yum/apt-get

sudo yum install java-devel

Download MVN from http://maven.apache.org/download.cgi

wget http://ftp.heanet.ie/mirrors/www.apache.org/dist/maven/maven-3/3.1.1/binaries/apache-maven-3.1.1-bin.tar.gz
sudo tar xzf apache-maven-*-bin.tar.gz -C /usr/local
cd /usr/local
sudo ln -s apache-maven-* maven
sudo vi /etc/profile.d/maven.sh

Add the following to maven.sh

export M2_HOME=/usr/local/maven
export PATH=${M2_HOME}/bin:${PATH}

Reload bash and test mvn

bash
mvn -version

3. Set Up YCSB

Download the YCSB zip file and compile:

git clone git://github.com/brianfrankcooper/YCSB.git
cd YCSB
mvn -pl com.yahoo.ycsb:mongodb-binding -am clean package

4. Run YCSB

Now you are ready to run! First, use the asynchronous driver to load the data:

./bin/ycsb load mongodb-async -s -P workloads/workloada > outputLoad.txt

Then, run the workload:

./bin/ycsb run mongodb-async -s -P workloads/workloada > outputRun.txt

Similarly, to use the synchronous driver from MongoDB Inc. we load the data:

./bin/ycsb load mongodb -s -P workloads/workloada > outputLoad.txt

Then, run the workload:

./bin/ycsb run mongodb -s -P workloads/workloada > outputRun.txt

See the next section for the list of configuration parameters for MongoDB.

MongoDB Configuration Parameters

• mongodb.url
  • This should be a MongoDB URI or connection string.
    • See http://docs.mongodb.org/manual/reference/connection-string/ for the standard options.
    • For the complete set of options for the asynchronous driver see:
      • http://www.allanbank.com/mongodb-async-driver/apidocs/index.html?com/allanbank/mongodb/MongoDbUri.html
    • For the complete set of options for the synchronous driver see:
      • http://api.mongodb.org/java/current/index.html?com/mongodb/MongoClientURI.html
  • Default value is mongodb://localhost:27017/ycsb?w=1
  • Default value of database is ycsb

• mongodb.batchsize
  • Useful for the insert workload as it will submit the inserts in batches inproving throughput.
  • Default value is 1.

• mongodb.upsert
  • Determines if the insert operation performs an update with the upsert operation or a insert. Upserts have the advantage that they will continue to work for a partially loaded data set.
  • Setting to true uses updates, false uses insert operations.
  • Default value is false.

• mongodb.writeConcern
  • Deprecated - Use the w and journal options on the MongoDB URI provided by the mongodb.url.
  • Allowed values are :
    • errors_ignored
    • unacknowledged
    • acknowledged
    • journaled
    • replica_acknowledged
    • majority
  • Default value is acknowledged.

• mongodb.readPreference
  • Deprecated - Use the readPreference options on the MongoDB URI provided by the mongodb.url.
  • Allowed values are :
    • primary
    • primary_preferred
    • secondary
    • secondary_preferred
    • nearest
  • Default value is primary.

• mongodb.maxconnections
  • Deprecated - Use the maxPoolSize options on the MongoDB URI provided by the mongodb.url.
  • Default value is 100.

• mongodb.threadsAllowedToBlockForConnectionMultiplier
  • Deprecated - Use the waitQueueMultiple options on the MongoDB URI provided by the mongodb.url.
  • Default value is 5.

For example:

./bin/ycsb load mongodb-async -s -P workloads/workloada -p mongodb.url=mongodb://localhost:27017/ycsb?w=0

To run with the synchronous driver from MongoDB Inc.:

./bin/ycsb load mongodb -s -P workloads/workloada -p mongodb.url=mongodb://localhost:27017/ycsb?w=0