Bug fix: Popped versions are exclusive, so after recovery a tag for which there is no longer data should be considered popped up until the version *after* recovery, indicating that data at the recovery version itself has been popped.

fdbserver/OldTLogServer_6_0.actor.cpp

@@ -1157,7 +1157,7 @@ Version poppedVersion(Reference<LogData> self, Tag tag) {
 		if (tag == txsTag || tag.locality == tagLocalityTxs) {
 			return 0;
 		}
-		return self->recoveredAt;
+		return self->recoveredAt + 1;
 	}
 	return tagData->popped;
 }

fdbserver/OldTLogServer_6_2.actor.cpp

@@ -1376,7 +1376,7 @@ Version poppedVersion(Reference<LogData> self, Tag tag) {
 		if (tag == txsTag || tag.locality == tagLocalityTxs) {
 			return 0;
 		}
-		return self->recoveredAt;
+		return self->recoveredAt + 1;
 	}
 	return tagData->popped;
 }

fdbserver/TLogServer.actor.cpp

@@ -1503,7 +1503,7 @@ Version poppedVersion(Reference<LogData> self, Tag tag) {
 		if (tag == txsTag || tag.locality == tagLocalityTxs) {
 			return 0;
 		}
-		return self->recoveredAt;
+		return self->recoveredAt + 1;
 	}
 	return tagData->popped;
 }