Description:

Deletes a file from HDFS. The file can be provided as an attribute from an incoming FlowFile, or a statically set file that is periodically removed. If this processor has an incoming connection, it will ignore running on a periodic basis and instead rely on incoming FlowFiles to trigger a delete. Optionally, you may specify use a wildcard character to match multiple files or directories.

Tags:

hadoop, HDFS, delete, remove, filesystem, restricted

Properties:

In the list below, the names of required properties appear in bold. Any other properties (not in bold) are considered optional. The table also indicates any default values.

Name	Default Value	Allowable Values	Description
Hadoop Configuration Resources			A file or comma separated list of files which contains the Hadoop file system configuration. Without this, Hadoop will search the classpath for a 'core-site.xml' and 'hdfs-site.xml' file or will revert to a default configuration.
Kerberos Principal			Kerberos principal to authenticate as. Requires nifi.kerberos.krb5.file to be set in your nifi.properties
Kerberos Keytab			Kerberos keytab associated with the principal. Requires nifi.kerberos.krb5.file to be set in your nifi.properties
Kerberos Relogin Period	4 hours		Period of time which should pass before attempting a kerberos relogin
Additional Classpath Resources			A comma-separated list of paths to files and/or directories that will be added to the classpath. When specifying a directory, all files with in the directory will be added to the classpath, but further sub-directories will not be included.
File or Directory			The HDFS file or directory to delete. A wildcard expression may be used to only delete certain files Supports Expression Language: true
Recursive	true	* true * false	Remove contents of a non-empty directory recursively

Relationships:

Name	Description
Success	FlowFiles will be routed here if the delete command was successful
failure	FlowFiles will be routed here if the delete command was unsuccessful

Reads Attributes:

None specified.

Writes Attributes:

Name	Description
hdfs.filename	HDFS file to be deleted
hdfs.path	HDFS Path specified in the delete request
hdfs.error.message	HDFS error message related to the hdfs.error.code

Reads Attributes:

None specified.

Writes Attributes:

None specified.

State management:

This processor has no state management.

Restricted:

Provides operator the ability to delete any file that NiFi has access to in HDFS or the local filesystem.