gavinchou commented on code in PR #57379:
URL: https://github.com/apache/doris/pull/57379#discussion_r2468147077
##########
cloud/src/meta-service/meta_service_resource.cpp:
##########
@@ -215,6 +217,235 @@ static void async_notify_refresh_instance(
}
}
+// Find all instances that need cascade update using BFS traversal
+// Returns 0 on success, -1 on error
+// Uses separate read-only transactions to avoid read conflicts with the main
write transaction
+static int collect_direct_derived_instances(TxnKv* txn_kv, const std::string&
source_instance_id,
+ std::vector<std::string>*
derived_ids) {
+ if (!derived_ids) {
+ return -1;
+ }
+ derived_ids->clear();
+
+ if (source_instance_id.empty()) {
+ return 0;
+ }
+
+ constexpr Versionstamp kMinVersionstamp = Versionstamp::min();
+ constexpr Versionstamp kMaxVersionstamp = Versionstamp::max();
+
+ std::string key_start =
+ versioned::snapshot_reference_key_prefix(source_instance_id,
kMinVersionstamp);
+ std::string key_end =
+ versioned::snapshot_reference_key_prefix(source_instance_id,
kMaxVersionstamp);
Review Comment:
not exactly correct
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