Merge pull request #58375 from ClickHouse/backport/23.11/58308

Backport #58308 to 23.11: Handle another case for preprocessing in Keeper
ClickHouse · Dec 30, 2023 · 41f4d54 · 41f4d54
2 parents cd0713c + e657ec8
commit 41f4d54
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/Coordination/KeeperServer.cpp b/src/Coordination/KeeperServer.cpp
@@ -660,6 +660,12 @@ nuraft::cb_func::ReturnCode KeeperServer::callbackFunc(nuraft::cb_func::Type typ
 
         switch (type)
         {
+            case nuraft::cb_func::PreAppendLogLeader:
+            {
+                /// we cannot preprocess anything new as leader because we don't have up-to-date in-memory state
+                /// until we preprocess all stored logs
+                return nuraft::cb_func::ReturnCode::ReturnNull;
+            }
             case nuraft::cb_func::InitialBatchCommited:
             {
                 preprocess_logs();