# Using Java 17 with Amazon EMR Serverless
<a name="using-java-runtime"></a>

With Amazon EMR releases 6.11.0 and higher, configure EMR Serverless Spark jobs to use Java 17 runtime for the Java Virtual Machine (JVM). Use one of the following methods to configure Spark with Java 17.

## `JAVA_HOME`
<a name="using-java-runtime-java-home"></a>

To override the JVM setting for EMR Serverless 6.11.0 and higher, supply the `JAVA_HOME` setting to its `spark.emr-serverless.driverEnv` and `spark.executorEnv` environment classifications.

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#### [ x86\$164 ]

Set the required properties to specify Java 17 as the `JAVA_HOME` configuration for the Spark driver and executors:

```
--conf spark.emr-serverless.driverEnv.JAVA_HOME=/usr/lib/jvm/java-17-amazon-corretto.x86_64/ 
--conf spark.executorEnv.JAVA_HOME=/usr/lib/jvm/java-17-amazon-corretto.x86_64/
```

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#### [ arm\$164 ]

Set the required properties to specify Java 17 as the `JAVA_HOME` configuration for the Spark driver and executors:

```
--conf spark.emr-serverless.driverEnv.JAVA_HOME=/usr/lib/jvm/java-17-amazon-corretto.aarch64/
--conf spark.executorEnv.JAVA_HOME=/usr/lib/jvm/java-17-amazon-corretto.aarch64/
```

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## `spark-defaults`
<a name="using-java-runtime-spark-defaults"></a>

Alternatively, you can specify Java 17 in the `spark-defaults` classification to override the JVM setting for EMR Serverless 6.11.0 and higher.

------
#### [ x86\$164 ]

Specify Java 17 in the `spark-defaults` classification:

```
{
"applicationConfiguration": [ 
         { 
            "classification": "spark-defaults",
            "properties": { 
               "spark.emr-serverless.driverEnv.JAVA_HOME" : "/usr/lib/jvm/java-17-amazon-corretto.x86_64/",
               "spark.executorEnv.JAVA_HOME": "/usr/lib/jvm/java-17-amazon-corretto.x86_64/" 
            }
         }
      ]
}
```

------
#### [ arm\$164 ]

Specify Java 17 in the `spark-defaults` classification:

```
{
"applicationConfiguration": [ 
         { 
            "classification": "spark-defaults",
            "properties": { 
               "spark.emr-serverless.driverEnv.JAVA_HOME" : "/usr/lib/jvm/java-17-amazon-corretto.aarch64/",
               "spark.executorEnv.JAVA_HOME": "/usr/lib/jvm/java-17-amazon-corretto.aarch64/" 
            }
         }
      ]
}
```

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