Fix for Bug#38762 main.federated_bug_25714 fails sporadically

mysql-test/r/federated_bug_25714.result

@@ -9,6 +9,10 @@ DROP DATABASE IF EXISTS federated;
 CREATE DATABASE federated;
 DROP DATABASE IF EXISTS federated;
 CREATE DATABASE federated;
+SET @OLD_MASTER_CONCURRENT_INSERT= @@GLOBAL.CONCURRENT_INSERT;
+SET @@GLOBAL.CONCURRENT_INSERT= 0;
+SET @OLD_SLAVE_CONCURRENT_INSERT= @@GLOBAL.CONCURRENT_INSERT;
+SET @@GLOBAL.CONCURRENT_INSERT= 0;
 DROP TABLE IF EXISTS federated.bug_13118_table;
 CREATE TABLE federated.t1 (
 `id` int auto_increment primary key, 
@@ -49,7 +53,9 @@ id	value
 7	54
 8	55
 DROP TABLE federated.t1;
+SET @@GLOBAL.CONCURRENT_INSERT= @OLD_MASTER_CONCURRENT_INSERT;
 DROP TABLE federated.t1;
+SET @@GLOBAL.CONCURRENT_INSERT= @OLD_SLAVE_CONCURRENT_INSERT;
 DROP TABLE IF EXISTS federated.t1;
 DROP DATABASE IF EXISTS federated;
 DROP TABLE IF EXISTS federated.t1;

mysql-test/t/federated_bug_25714.test

 --source include/have_bug25714.inc
 source include/federated.inc;
 
+connection master;
+# Disable concurrent inserts to avoid test failures when reading
+# data from concurrent connections (insert might return before
+# the data is actually in the table).
+SET @OLD_MASTER_CONCURRENT_INSERT= @@GLOBAL.CONCURRENT_INSERT;
+SET @@GLOBAL.CONCURRENT_INSERT= 0;
 
 connection slave;
+SET @OLD_SLAVE_CONCURRENT_INSERT= @@GLOBAL.CONCURRENT_INSERT;
+SET @@GLOBAL.CONCURRENT_INSERT= 0;
 --disable_warnings
 DROP TABLE IF EXISTS federated.bug_13118_table;
 --enable_warnings
@@ -39,9 +47,12 @@ SELECT LAST_INSERT_ID();
 SELECT * from federated.t1;
 
 DROP TABLE federated.t1;
+SET @@GLOBAL.CONCURRENT_INSERT= @OLD_MASTER_CONCURRENT_INSERT;
 connection slave;
 DROP TABLE federated.t1;
+SET @@GLOBAL.CONCURRENT_INSERT= @OLD_SLAVE_CONCURRENT_INSERT;
 
 
 source include/federated_cleanup.inc;
 
+