When a replica is down, coordinator stores hints. Replays on recovery (up to 3h default).

What you're seeing

If a write targets a down replica, coordinator stores a hint (the write + target). When the replica comes back, hints replay automatically.

Default hint window: 3 hours. Past that, run repair to catch up. Hints reduce inconsistency window but don't replace repair.

★ KEY TAKEAWAY
When a replica is down, coordinator stores hints. Replays when replica returns. Reduces inconsistency window.
▶ WHAT TO TRY
  • Kill N2, write a few — hints accumulate.
  • Revive N2 and replay — N2 catches up.
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