* mount: keep a deliberate bucket allow-empty-folders setting
* shell: s3.bucket.allowEmptyFolders toggles the empty folder cleaner
* shell: guard allow-empty-folders toggle with expected extended attrs
* filer: drop cached empty-folder policy on bucket entry update
* mount: guard allow-empty-folders write with expected extended attrs
* filer: skip caching a stale cleanup policy read across an update
* mount, shell: snapshot the full extended attributes for update preconditions
* filer: fail closed and invalidate on all bucket entry events for cleanup policy
* filer: key the cleanup policy generation by bucket
* filer: requeue cleanup when the bucket policy cannot be loaded
* filer: expire idle cleanup policy generations
* filer: skip requeueing cleanup after the cleaner stops
* filer: bound cleanup retries on repeated policy failures
* filer: cover cleanup requeue on repeated policy failures
* filer: keep cleanup policy generations while reads are in flight
* filer: exercise the cleanup queue lifecycle in the retry-cap test
Chris Lu
bdc37a1e86