[#MDEV-9289] Batch DDL causes MariaDB 10.0.22 Galera Cluster hang on Ubuntu 12.04

How to reproduce:
Set up 3 mariadb galera cluster nodes: A, B, C. create one table on node A like this:

create table foo (a int);

And then do batch ddl like this.

create table foo_0 like foo;

create table foo_1 like foo;

create table foo_2 like foo;

...

create table foo_99 like foo;

Then the cluster hanged. run show processlist on node b, the output was like this:

MariaDB [(none)]> show processlist;

+----+-------------+-----------+------+---------+------+--------------------+------------------------------+----------+

| Id | User        | Host      | db   | Command | Time | State              | Info                         | Progress |

+----+-------------+-----------+------+---------+------+--------------------+------------------------------+----------+

|  1 | system user |           | hebi | Sleep   |    7 | exit open_tables() | create table foo_28 like foo |    0.000 |

|  2 | system user |           | NULL | Sleep   | 4377 | wsrep aborter idle | NULL                         |    0.000 |

run percona-toolkit pt-pmp on node b, the output was like this

Tue Dec 15 13:21:13 CST 2015

     78 pthread_cond_wait,toku_cond_wait(toku_pthread.h:309),kwait(toku_pthread.h:309),work_on_kibbutz(toku_pthread.h:309),start_thread(libpthread.so.0),clone(libc.so.6),??

     31 pthread_cond_wait,galera::Monitor::enter(libgalera_smm.so),galera::TrxHandle*)(libgalera_smm.so),galera::TrxHandle*)(libgalera_smm.so),gcs_action(libgalera_smm.so),bool&)(libgalera_smm.so),galera::ReplicatorSMM::async_recv(libgalera_smm.so),galera_recv(libgalera_smm.so),wsrep_replication_process(wsrep_thd.cc:314),start_wsrep_THD(mysqld.cc:5471),start_thread(libpthread.so.0),clone(libc.so.6),??

     10 libaio::??(libaio.so.1),os_aio_linux_collect(os0file.cc:5157),os_aio_linux_handle(os0file.cc:5157),fil_aio_wait(fil0fil.cc:5687),io_handler_thread(srv0start.cc:532),start_thread(libpthread.so.0),clone(libc.so.6),??

Accoding to the output, it seems that the tokudb engine causes the issue. So I disabled the tokudb engine, the issue was solved.

BTW, I can't reproduced the issue on 10.0.22-galera+ubuntu 14.04, pxc , 10.1.9-galera.

[MDEV-9289] Batch DDL causes MariaDB 10.0.22 Galera Cluster hang on Ubuntu 12.04 Created: 2015-12-15 Updated: 2019-12-12 Resolved: 2019-12-12
Status:	Closed
Project:	MariaDB Server
Component/s:	Galera
Affects Version/s:	10.0.22-galera
Fix Version/s:	N/A

[MDEV-9289] Batch DDL causes MariaDB 10.0.22 Galera Cluster hang on Ubuntu 12.04 Created: 2015-12-15 Updated: 2019-12-12 Resolved: 2019-12-12