maedhroz commented on code in PR #4696:
URL: https://github.com/apache/cassandra/pull/4696#discussion_r3024556492
##########
src/java/org/apache/cassandra/db/lifecycle/Tracker.java:
##########
@@ -272,7 +273,11 @@ public void
updateInitialSSTableSize(Iterable<SSTableReader> sstables)
public void addSSTables(Collection<SSTableReader> sstables)
{
-
Preconditions.checkState(!cfstore.metadata().replicationType().isTracked());
+ // Tracked tables may legitimately use this path during migration from
untracked to tracked,
+ // when incremental repair streams SSTables that were written before
tracking was enabled.
+
Preconditions.checkState(!cfstore.metadata().replicationType().isTracked()
+ ||
ClusterMetadata.current().mutationTrackingMigrationState
+
.getKeyspaceInfo(cfstore.metadata().keyspace) != null);
Review Comment:
nit: Might be nice to have something like an `isMigrating(String)` on MTMS,
but just a matter of taste I guess.
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