Chris Lu d3b8896094 fix: skip empty folder cleanup for directory markers ...

Explicitly created directory markers (zero-byte S3 objects with keys
ending in "/") should not be auto-deleted by the empty folder cleaner
even when they have no children. These represent intentional directory
structures created via PutObject.

The distinction between implicit and explicit directories is:
- Implicit dirs: created by filer as parents, Mime="" (IsOlderDir)
- Explicit markers: created via PutObject, Mime set or ExtMimeType set

Added isDirectoryMarker() check before deletion that looks for
ExtMimeType in extended attributes (set only on zero-byte markers).
Results are cached in folderState to avoid repeated store lookups.
Uses fail-closed on transient errors but allows deletion on ErrNotFound
(entry doesn't exist = implicit directory, not a marker).

2026-03-21 13:23:19 -07:00

..

cleanup_queue_test.go

Switch empty-folder cleanup to bucket policy (#8292)

2026-02-10 18:38:38 -08:00

cleanup_queue.go

Switch empty-folder cleanup to bucket policy (#8292)

2026-02-10 18:38:38 -08:00

empty_folder_cleaner_test.go

Switch empty-folder cleanup to bucket policy (#8292)

2026-02-10 18:38:38 -08:00

empty_folder_cleaner.go

fix: skip empty folder cleanup for directory markers

2026-03-21 13:23:19 -07:00