Deleting Spark application code

You can delete Apache Spark files that you no longer need.

For example:

To delete the file subdir1/myapp.jar from your $HOME/spark/apps directory, issue the following command:
```
spark-submit.sh --delete-file apps subdir1/myapp.jar
```
To delete the file mylib.jar from your $HOME/spark/defaultlibs directory, issue the following command:
```
spark-submit.sh --delete-file defaultlibs mylib.jar
```
To delete the file genlib.jar from the /globallibs directory, issue the following command:
```
spark-submit.sh --delete-file globallibs genlib.jar
```

Using a REST API call

Alternatively, use the IBM® Db2® Warehouse API to submit an HTTP DELETE request that calls the /home endpoint. For example, to delete the file idax_examples.jar, issue the following cURL command (replace the user ID, password, and host name):

curl -k --user "userid:password" 
  -X DELETE "https://hostname:8443/dashdb-api/home/spark/apps/idax_examples.jar"

If the $HOME/spark/apps folder is empty, you can delete it. For example, issue the following cURL command (replace the user ID, password, and host name):

curl -k --user "userid:password" 
  -X DELETE "https://hostname:8443/dashdb-api/home/spark/apps"

Only the last directory (/apps) is deleted; the /spark directory is not deleted. The $HOME/spark/apps directory is re-created automatically when you deploy new Spark application code as described in Deploying Spark application code and dependencies to Db2 Warehouse.