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YCSB

Attention

This page documents an earlier version. Go to the latest (v2.0)version.

Note

For more information about YCSB see:

YCSB Wiki: https://github.com/brianfrankcooper/YCSB/wiki
Workload info: https://github.com/brianfrankcooper/YCSB/wiki/Core-Workloads

We will first setup YCSB and configure it to use the YCQL Driver for Cassandra.

Step 1.Clone the YCSB repository

You can do this by running the following commands.

cd $HOME
git clone https://github.com/brianfrankcooper/YCSB.git
cd YCSB

Step 2. Use YCQL Driver

In pom.xml change the line <cassandra.cql.version>3.0.0</cassandra.cql.version> to the latest version of the Yugabyte-Cassandra driver <cassandra.cql.version>3.2.0-yb-17</cassandra.cql.version>

Note

You can (and probably should) always check Maven to find the latest version.

In cassandra/pom.xml change the line <groupId>com.datastax.cassandra</groupId> to <groupId>com.yugabyte</groupId>

Step 3. Build YCSB

You can build YCSB by running the following command:

mvn -pl com.yahoo.ycsb:cassandra-binding -am clean package -DskipTests

Step 4. Setup cqlsh

You can setup Yugabyte-cqlsh by doing the following:

cd $HOME
git clone https://github.com/yugabyte/cqlsh

Step 5. Prepare the driver script

Create an executable file in the YCSB folder:

cd $HOME/YCSB
touch run-yb-ycsb.sh
chmod a+x run-yb-ycsb.sh

Copy the following contents in run-yb-ycsb.sh:

Note

You may want to customize the values below (such as ) with the correct/intended ones for your setup.

#!/bin/bash


# YB-CQL host (any of the yb-tserver hosts)
# (The other nodes should get automatically discovered by the driver).
hosts=127.0.0.1
ycsb=$HOME/YCSB/bin/ycsb
cqlsh=$HOME/cqlsh/bin/cqlsh <ip-addr>
ycsb_setup_script=$HOME/YCSB/cassandra/src/test/resources/ycsb.cql
keyspace=ycsb
table=usertable
# See https://github.com/brianfrankcooper/YCSB/wiki/Core-Properties for param descriptions
params="-p recordcount=1000000 -p operationcount=10000000"

setup() {
    $cqlsh <<EOF
create keyspace $keyspace with replication = {'class': 'SimpleStrategy', 'replication_factor' : 3};
EOF
    $cqlsh -k $keyspace -f $ycsb_setup_script
}

cleanup() {
    $cqlsh <<EOF
drop table $keyspace.$table;
drop keyspace $keyspace;
EOF
}

delete_data() {
    $cqlsh -k $keyspace <<EOF
drop table $table;
EOF
    $cqlsh -k $keyspace -f $ycsb_setup_script
}


run_workload() {
    local workload=$1-----------------
    echo =========================== $workload ===========================
    $ycsb load cassandra-cql -p hosts=$hosts -P workloads/$workload $params \
      -p threadcount=40 | tee $workload-load.dat
    $ycsb run cassandra-cql -p hosts=$hosts -P workloads/$workload $params \
      -p cassandra.readconsistencylevel=QUORUM -p cassandra.writeconsistencylevel=QUORUM \
      -p threadcount=256 -p maxexecutiontime=180 | tee $workload-transaction.dat
    delete_data
}

setup

load_data workloada
run_workload workloada
run_workload workloadb
run_workload workloadc
run_workload workloadf
run_workload workloadd

truncate_table
load_data workloade
run_workload workloade

cleanup

We use YugabyteDB with strongly consistent reads and writes, which corresponds, in Cassandra, to using the QUORUM option for both cassandra.readconsistencylevel and cassandra.writeconsistencylevel (see the command above).

Step 6. Run and Check Results

Simply run the script above:

./run-yb-ycsb.sh

Tip

See also this page about running workloads in parallel.

Results for each workload will be in workload[abcdef]-transaction.dat (e.g. workloada-transaction.dat).