Both multipart uploads and multipart pieces follow well-defined state transitions.
Multipart State Transitions
Following are the possible state transitions:
NEW -> ABORT
NEW -> DELETED
NEW -> READY
NEW -> EXPIRED
READY -> ABORT
READY -> COMPLETE
COMPLETE -> JOIN
JOIN -> FAILED
JOIN -> SUCCESS
SUCCESS -> DELETED
ABORT -> DELETED
FAILED -> DELETED
FAILED -> EXPIRED
EXPIRED (goes directly to EXPIRED state)
Multipart Piece State Transitions
Following are the possible state transitions:
NEW -> JOIN
NEW -> ERROR
NEW -> ABORT
NEW -> EXPIRED
NEW -> SKIPPED
ABORT -> SKIPPED
ABORT -> DELETED
ABORT -> ERROR
SUCCESS -> SKIPPED
SUCCESS -> DELETED
SUCCESS -> ERROR
JOIN -> SUCCESS
JOIN -> FAILED
FAILED -> ERROR
FAILED -> EXPIRED
FAILED -> SKIPPED
EXPIRED (goes directly to EXPIRED state)
SKIPPED (goes directly to SKIPPED state)