Status

Current state: "Under Discussion"Accepted

Vote thread: here

Discussion thread: here

JIRA: KAFKA-6435 – Application Reset Tool might delete incorrect internal topics

...

Users may want to specify which internal topics should be deleted instead of deleting all internal . At present, the streams reset tool deletes all topics that start with "<app<application.id>-" . This option will allow them to do so.and there are no options to control it.

The `--internal-topics` option is especially useful when there are prefix conflicts between applications, e.g. E.g., if we have two versions of the same application named "app" and "app-v2". In this case, if we want to be able to delete reset "app", the reset tool's default behaviour will delete both the internal topics of "app" and "app-v2" (since both are prefixed by "app" without deleting -"). With the `--internal-topics` option, we can provide internal topic names for "app" and delete the internal topics of for "app-v2", but both of their " without deleting the internal topics start with for "app-v2".

Public Interfaces

Add an option to the streams reset tool.

--internal-topics <String: list>    Comma     Comma-separated list of internal topics. 
                                      to delete. Must be a                                 If specified, these are the only topics 
                                     that the tool will attempt to deletesubset of the
                                      internal topics marked for deletion by
                                      the default behaviour (do a dry-run without this
                                      option to view these topics).

Proposed Changes

Add an internal-topics option to streams reset tool.

The `--internal-topics` option will take a comma-separated list of internal topics to be deleted. If specified, these will be the only topics considered for deletion. These topics must be a subset of those flagged as internal during a `--dry-run` without the `internal-topics` option. If omitted, the tool will default to the original behaviour, i.e. delete all topics that start with "<application.id>-".

Usage

Usage of the "internal-topic" options will involve:

...