set @@global.ndb_schema_dist_lock_wait_timeout = 1;
create table t1(a int primary key, b int not null, index(b)) engine = ndb;
insert into t1 values (1,1), (2,2);
set autocommit=0;
begin;
select count(*) from t1;
count(*)
2
ALTER TABLE t1 algorithm=copy, ADD COLUMN c int;
Warnings:
Warning	1296	Node <nodeid> 'Distribution of ALTER TABLE 't1' failed'
select a from t1 where b = 2;
ERROR HY000: Table definition has changed, please retry transaction
show warnings;
Level	Code	Message
Error	1412	Table definition has changed, please retry transaction
Warning	1296	Failed to discover table 't1' from NDB, table definition changed
Error	159	Table definition has changed, please retry transaction
show tables;
Tables_in_test
t1
drop table t1;
create table t1 (
col0 int, col1 int, col2 int, col3 int,
col4 int, col5 int, col6 int, col7 int,
col8 int, col9 int, col10 int, col11 int,
col12 int, col13 int, col14 int, col15 int,
col16 int, col17 int, col18 int, col19 int,
col20 int, col21 int, col22 int, col23 int,
col24 int, col25 int, col26 int, col27 int,
col28 int, col29 int, col30 int, col31 int,
primary key(col0)) engine = ndb;
begin;
insert into t1 (col0) values (1);
alter table t1 algorithm=inplace, add column col32 int COLUMN_FORMAT DYNAMIC;
Warnings:
Warning	1296	Node <nodeid> 'Distribution of ALTER TABLE 't1' failed'
select * from t1;
ERROR HY000: Table definition has changed, please retry transaction
show warnings;
Level	Code	Message
Error	1412	Table definition has changed, please retry transaction
Warning	1296	Failed to discover table 't1' from NDB, table definition changed
Error	159	Table definition has changed, please retry transaction
select * from t1;
col0	col1	col2	col3	col4	col5	col6	col7	col8	col9	col10	col11	col12	col13	col14	col15	col16	col17	col18	col19	col20	col21	col22	col23	col24	col25	col26	col27	col28	col29	col30	col31	col32
drop table t1;