# Use a Spark client already installed on a cluster

To use a Spark client that already resides on a cluster, specify the cluster path in the **sparkHome=** parameter in the `application.properties` file. For example:

**sparkHome=/cluster\_path/spark-2.4.5-bin-hadoop2.7/**

where `cluster_path` is your specific path.

The Spark client is started as part of the AEL execution and does not require any manual startup. The following examples show common cluster configurations.

| Cluster Configuration | Example Entry                                                                 |
| --------------------- | ----------------------------------------------------------------------------- |
| CDH 6.1               | **sparkHome=/opt/cloudera/parcels/CDH-6.1.1-1.cdh6.1.1.p0.875250/lib/spark/** |
| CDH 6.2               | **sparkHome=/opt/cloudera/parcels/CDH-6.2.0-1.cdh6.2.0.p0.967373/lib/spark/** |
| EMR 5.24              | **sparkHome=/usr/lib/spark/**                                                 |
| GDP 1.4.2.1           | **sparkHome=/usr/lib/spark/**                                                 |
| HDP 3.1               | **sparkHome=/usr/hdp/current/spark2-client**                                  |


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