After a lot of kafka topic removals, we have quite a few topics that are not used any more. They pollute the graphs, but with introduction of the regexed ChangeProp subscriptions, they started to have a real danger. If the regex occasionally matches a stale topic, it will subscribe to it holding up one of the valuable libuv threads, so it's better to do a cleanup and delete stale topics.
Here's the list for codfw, same for eqiad:
codfw.mediawiki.page_restore codfw.change-prop.retry.change-prop.transcludes.continue codfw.change-prop.retry.mediawiki.page_delete codfw.change-prop.transcludes.continue codfw.change-prop.retry.mediawiki.page_restore codfw.mediawiki.page_move codfw.change-prop.retry.mediawiki.revision_visibility_set codfw.mediawiki.page_delete codfw.change-prop.backlinks.continue codfw.change-prop.retry.mediawiki.user_block" with 1 partitions codfw.change-prop.retry.mediawiki.page_move codfw.mediawiki.revision_create codfw.change-prop.retry.mediawiki.revision_create codfw.mediawiki.revision_visibility_set codfw.change-prop.retry.change-prop.backlinks.continue codfw.mediawiki.user_block