# Current value of ndb-schema-dist-timeout
select @@ndb_schema_dist_timeout;
@@ndb_schema_dist_timeout
5
set @@ndb_schema_dist_timeout = 120;
ERROR HY000: Variable 'ndb_schema_dist_timeout' is a read only variable
#
# Test participant timeout during schema operation
#
CREATE TABLE t1(
a int primary key
) engine = NDB;
# Setup participant to timeout when schema operation starts
set GLOBAL debug="+d,ndb_schema_op_start_timeout";
# Expect warning printed on node where schema operation is started
call mtr.add_suppression("Schema dist coordinator detected timeout");
# Run schema operation to trigger participant timeout
ALTER TABLE t1 ALGORITHM=copy, ADD COLUMN b int;
Warnings:
Warning	1296	Node <nodeid> 'Participant timeout'
# Reset participant to not timeout anymore
set GLOBAL debug="-d,ndb_schema_op_start_timeout";
# Check that schema operation suceeded on another MySQL Server
SELECT * FROM t1;
a	b
DROP TABLE t1;