Wojciech Mitros 7634d3f7d4 test/cluster: fix flaky test_hints_consistency_during_replace ...

The test creates a sync point immediately after writing 100 rows
with CL=ANY, without waiting for pending hint writes to complete.

store_hint() is fire-and-forget: it submits do_store_hint() to a gate
and returns immediately. do_store_hint() updates _last_written_rp only
after writing to the commitlog. If create_sync_point() is called before
all do_store_hint() coroutines complete, the captured replay position
is stale, and await_sync_point() returns DONE before all hints are
replayed, leaving some rows missing.

Fix by waiting for the size_of_hints_in_progress metric to reach zero
before creating the sync point, ensuring all in-flight hint writes have
completed and _last_written_rp is up to date. This follows the same
pattern already used in test_sync_point.

Fixes: SCYLLADB-1560

Closes scylladb/scylladb#29623

2026-04-23 17:03:48 +02:00

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