| --- |
| id: functions-worker-temp-file-path |
| title: Configure temporary file path |
| sidebar_label: "Configure temporary file path" |
| description: Configure temporary file path for function workers in Pulsar. |
| --- |
| |
| Function workers use `java.io.tmpdir` in the JVM as the default temporary file path, which is also used as the default extraction file path for each NAR package. NAR packages require a local file path to extract and load to the Java class loader. |
| |
| If you want to change the default extraction file path for NAR packages to another directory, you can add the following parameter with the desired directory in the `functions_worker.yml` file. The configuration varies depending on the [function runtime](functions-concepts.md#function-runtime) you are using. |
| |
| | Function runtime | Configuration for temporary file path | |
| |:------------------------|:-------------------------------------------------| |
| | [Thread runtime](functions-runtime-thread.md)<br /> [Process runtime](functions-runtime-process.md) | `narExtractionDirectory` | |
| | [Kubernetes runtime](functions-runtime-kubernetes.md) | `functionRuntimeFactoryConfigs.narExtractionDirectory` | |
