Test that session variable scope doesn't span multiple sessions.

server/modules/routing/readwritesplit/test/rwsplit.sh

@@ -169,6 +169,8 @@ else
         echo "$TINPUT PASSED">>$TLOG ;
 fi
 
+# Disable autocommit in the first session and then test in new session that 
+# it is again enabled.
 TINPUT=test_autocommit_disabled2.sql
 TRETVAL=1
 a=`$RUNCMD < ./$TINPUT`
@@ -178,3 +180,14 @@ else
         echo "$TINPUT PASSED">>$TLOG ;
 fi
 
+TINPUT=set_autocommit_disabled.sql
+`$RUNCMD < ./$TINPUT`
+TINPUT=test_after_autocommit_disabled.sql
+TRETVAL=$TMASTER_ID
+a=`$RUNCMD < ./$TINPUT`
+if [ "$a" == "$TRETVAL" ]; then
+        echo "$TINPUT FAILED, return value $a when it was not accetable">>$TLOG; 
+else 
+        echo "$TINPUT PASSED">>$TLOG ; 
+fi
+

server/modules/routing/readwritesplit/test/set_autocommit_disabled.sql

@@ -0,0 +1,7 @@
+use test;
+drop table if exists t1;
+create table t1 (id integer);
+set autocommit=0;               -- open transaction
+begin;                         
+insert into t1 values(1);       -- write to master
+commit;

server/modules/routing/readwritesplit/test/test_after_autocommit_disabled.sql

@@ -0,0 +1,2 @@
+use test;
+select @@server_id;