backport ClickHouse#28892 to open source repo

Author: hanfei1991

src/Backups/RestorerFromBackup.cpp

@@ -1001,6 +1001,8 @@ void RestorerFromBackup::createTable(const QualifiedTableName & table_name)
         create_query_context->setSetting("keeper_initial_backoff_ms", zookeeper_retries_info.initial_backoff_ms);
         create_query_context->setSetting("keeper_max_backoff_ms", zookeeper_retries_info.max_backoff_ms);
 
+        create_query_context->setUnderRestore(true);
+
         /// Execute CREATE TABLE query (we call IDatabase::createTableRestoredFromBackup() to allow the database to do some
         /// database-specific things).
         database->createTableRestoredFromBackup(

src/Interpreters/Context.cpp

@@ -1036,6 +1036,7 @@ ContextData::ContextData(const ContextData &o) :
     merge_tree_read_task_callback(o.merge_tree_read_task_callback),
     merge_tree_all_ranges_callback(o.merge_tree_all_ranges_callback),
     parallel_replicas_group_uuid(o.parallel_replicas_group_uuid),
+    is_under_restore(o.is_under_restore),
     client_protocol_version(o.client_protocol_version),
     query_access_info(std::make_shared<QueryAccessInfo>(*o.query_access_info)),
     query_factories_info(o.query_factories_info),

src/Interpreters/Context.h

@@ -346,6 +346,8 @@ class ContextData
     std::optional<MergeTreeAllRangesCallback> merge_tree_all_ranges_callback;
     UUID parallel_replicas_group_uuid{UUIDHelpers::Nil};
 
+    bool is_under_restore = false;
+
     /// This parameter can be set by the HTTP client to tune the behavior of output formats for compatibility.
     UInt64 client_protocol_version = 0;
 
@@ -913,6 +915,9 @@ class Context: public ContextData, public std::enable_shared_from_this<Context>
     void setDistributed(bool is_distributed_) { is_distributed = is_distributed_; }
     bool isDistributed() const { return is_distributed; }
 
+    bool isUnderRestore() const { return is_under_restore; }
+    void setUnderRestore(bool under_restore) { is_under_restore = under_restore; }
+
     String getDefaultFormat() const;    /// If default_format is not specified, some global default format is returned.
     void setDefaultFormat(const String & name);