sysbench --db-driver=mysql --mysql-user=root --mysql-password=example --mysql-host=example --mysql-db=takedown --range_size=100 --table_size=10000000 --tables=1 --threads=1 --events=0 --time=60 --rand-type=uniform /usr/share/sysbench/oltp_read_only.lua prepare

pt-online-schema-change --execute --alter "ADD COLUMN testingcolumn VARCHAR(250) DEFAULT 'this is a test record default value'" h=example.example.example,u=root,p=example,D=takedown,t=sbtest1

No slaves found.  See --recursion-method if host d6c54372-f867-4d9a-92d9-546bde3b7918 has slaves.
Not checking slave lag because no slaves were found and --check-slave-lag was not specified.
Operation, tries, wait:
  analyze_table, 10, 1
  copy_rows, 10, 0.25
  create_triggers, 10, 1
  drop_triggers, 10, 1
  swap_tables, 10, 1
  update_foreign_keys, 10, 1
  Altering `takedown`.`sbtest1`...
Creating new table...
Created new table takedown._sbtest1_new OK.
Altering new table...
Altered `takedown`.`_sbtest1_new` OK.
2018-06-14T11:51:50 Creating triggers...
2018-06-14T11:51:50 Created triggers OK.
2018-06-14T11:51:50 Copying approximately 10000062 rows...
Copying `takedown`.`sbtest1`:   5% 08:32 remain
Copying `takedown`.`sbtest1`:   8% 10:18 remain
Copying `takedown`.`sbtest1`:  12% 10:52 remain
Copying `takedown`.`sbtest1`:  15% 10:41 remain
Copying `takedown`.`sbtest1`:  19% 10:13 remain
Copying `takedown`.`sbtest1`:  22% 10:05 remain
Copying `takedown`.`sbtest1`:  26% 09:30 remain
Copying `takedown`.`sbtest1`:  33% 08:07 remain
Copying `takedown`.`sbtest1`:  39% 06:51 remain
Copying `takedown`.`sbtest1`:  46% 05:51 remain
Copying `takedown`.`sbtest1`:  52% 04:57 remain
Copying `takedown`.`sbtest1`:  59% 04:05 remain
Copying `takedown`.`sbtest1`:  66% 03:17 remain
Copying `takedown`.`sbtest1`:  73% 02:31 remain
Copying `takedown`.`sbtest1`:  80% 01:51 remain
Copying `takedown`.`sbtest1`:  86% 01:14 remain
Copying `takedown`.`sbtest1`:  93% 00:38 remain
Copying `takedown`.`sbtest1`:  99% 00:03 remain
2018-06-14T12:00:53 Copied rows OK.
2018-06-14T12:00:53 Swapping tables...
2018-06-14T12:00:53 Swapped original and new tables OK.
2018-06-14T12:00:53 Dropping old table...
2018-06-14T12:00:53 Dropped old table `takedown`.`_sbtest1_old` OK.
2018-06-14T12:00:53 Dropping triggers...
2018-06-14T12:00:53 Dropped triggers OK.
Successfully altered `takedown`.`sbtest1`.

E, [2018-06-14T11:46:47.913467 #23669] ERROR -- : Error occurred for cluster example-example: Deadlock found when trying to get lock; try restarting transaction
E, [2018-06-14T11:52:48.814928 #23669] ERROR -- : Error occurred for cluster example-example: Deadlock found when trying to get lock; try restarting transaction
E, [2018-06-14T11:53:48.970790 #23669] ERROR -- : Error occurred for cluster example-example: Deadlock found when trying to get lock; try restarting transaction

(none)> show variables like '%vers%';
+---------------------------+---------------------------+
| Variable_name             | Value                     |
+---------------------------+---------------------------+
| innodb_version            | 5.6.36-82.1               |
| protocol_version          | 10                        |
| slave_type_conversions    |                           |
| thread_pool_oversubscribe | 3                         |
| version                   | 10.1.26-MariaDB           |
| version_comment           | Source distribution       |
| version_compile_machine   | x86_64                    |
| version_compile_os        | Linux                     |
| version_malloc_library    | system                    |
| version_ssl_library       | OpenSSL 1.0.1f 6 Jan 2014 |
| wsrep_patch_version       | wsrep_25.19               |
+---------------------------+---------------------------+
11 rows in set
Time: 0.007s