Summary

The static parts log rate job IDs should be as short as possible.

Rationale

The log rate jobs are assigned human-readable IDs that contain the static parts as well as the Kibana space and logs source IDs: kibana-logs-ui-${spaceId}-${sourceId}-log-entry-rate Since the Kibana space ID is set by the user, there is a risk of exceeding the 64-character limit on the length of the ML job ID. Reducing the lengths of the static parts can reduce that risk by leaving more room for the user-defined space ID.

In the long term the space-awareness of ML jobs will remove the necessity for including the space ID in the job ID.

Because the id is used to find the jobs belonging to a source config, this will be a breaking change.

Acceptance criteria

• The id assigned to jobs is shortened to logs-${spaceId}-${sourceId}-rate.
• The id assigned to a datafeed matches the job id.
• Jobs that were created before this change are still handled correctly.