gianm commented on issue #6069: BUG: intermediate persist directories are not cleaned up URL: https://github.com/apache/incubator-druid/issues/6069#issuecomment-408912020 Hi @varaga, The MiddleManager processes themselves are meant to clean up these directories when tasks exit. Are the MiddleManagers (or the machine itself) crashing before the cleanup can happen? Also, I _think_ they do not clean up 'stale' directories for unused tasks on startup. This would be a nice feature to add. Something like: remove all task working directories for tasks that are _not_ restored (i.e. in restore.json) Are you interested in contributing a patch for that?
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