ddl: initialize the mock session in advanced (#41227)

close #40879
pingcap · Feb 9, 2023 · f5efbba · f5efbba
1 parent 98fe813
commit f5efbba
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/ddl/backfilling.go b/ddl/backfilling.go
@@ -861,6 +861,9 @@ func initSessCtx(sessCtx sessionctx.Context, sqlMode mysql.SQLMode, tzLocation *
 	sessCtx.GetSessionVars().StmtCtx.DividedByZeroAsWarning = !sqlMode.HasStrictMode()
 	sessCtx.GetSessionVars().StmtCtx.IgnoreZeroInDate = !sqlMode.HasStrictMode() || sqlMode.HasAllowInvalidDatesMode()
 	sessCtx.GetSessionVars().StmtCtx.NoZeroDate = sqlMode.HasStrictMode()
+	// Prevent initializing the mock context in the workers concurrently.
+	// For details, see https://github.com/pingcap/tidb/issues/40879.
+	_ = sessCtx.GetDomainInfoSchema()
 	return nil
 }