Assertion `!(thd->rgi_slave && thd->rgi_slave->did_mark_start_commit)' failed in ha_rollback_trans

--source include/have_log_bin.inc

--source include/have_innodb.inc

--source include/master-slave.inc

set global binlog_split_alter=true;

--connection slave

stop slave;

SET global slave_parallel_threads=2;

set global slave_parallel_mode=optimistic;

start slave;

--connection master

CREATE TABLE t1 (i int primary key) ENGINE = InnoDB;

--connection master1 

ALTER  TABLE t1 DROP PRIMARY KEY;

ALTER  TABLE t1 ADD UNIQUE KEY ui (i);

--error 1280 ###?  query 'ALTER  TABLE t1 ADD PRIMARY KEY ( i )' failed: 1280: Incorrect index name 'ui'

ALTER  TABLE t1 ADD PRIMARY KEY (i);

--sync_slave_with_master

--connection master

drop table t1;

--source include/rpl_end.inc

#3  <signal handler called>

#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51

#5  0x00007f6f46a7a801 in __GI_abort () at abort.c:79

#6  0x00007f6f46a6a39a in __assert_fail_base (fmt=0x7f6f46bf17d8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x55d6f769cb88 "!(thd->rgi_slave && thd->rgi_slave->did_mark_start_commit)", file=file@entry=0x55d6f769bff0 "/10.5o/sql/handler.cc", line=line@entry=1856, function=function@entry=0x55d6f769ef80 <ha_rollback_trans(THD*, bool)::__PRETTY_FUNCTION__> "int ha_rollback_trans(THD*, bool)") at assert.c:92

#7  0x00007f6f46a6a412 in __GI___assert_fail (assertion=0x55d6f769cb88 "!(thd->rgi_slave && thd->rgi_slave->did_mark_start_commit)", file=0x55d6f769bff0 "/10.5o/sql/handler.cc", line=1856, function=0x55d6f769ef80 <ha_rollback_trans(THD*, bool)::__PRETTY_FUNCTION__> "int ha_rollback_trans(THD*, bool)") at assert.c:101

#8  0x000055d6f6b44316 in ha_rollback_trans (thd=0x7f6ef4000d60, all=false) at /10.5o/sql/handler.cc:1856

#9  0x000055d6f69af751 in trans_rollback_stmt (thd=0x7f6ef4000d60) at /10.5o/sql/transaction.cc:495

#10 0x000055d6f6804e30 in mysql_execute_command (thd=0x7f6ef4000d60) at /10.5o/sql/sql_parse.cc:6011

#11 0x000055d6f680aa38 in mysql_parse (thd=0x7f6ef4000d60, rawbuf=0x7f6ef803c61b "/*!100001  ALTER  TABLE t1 ADD PRIMARY KEY (i) EXECUTE = UNTIL COMMIT 10 */", length=75, parser_state=0x7f6f40074a00, is_com_multi=false, is_next_command=false) at /10.5o/sql/sql_parse.cc:7988

#12 0x000055d6f6c9fa02 in Query_log_event::do_apply_event (this=0x7f6ef803c470, rgi=0x7f6ef80387e0, query_arg=0x7f6ef803c61b "/*!100001  ALTER  TABLE t1 ADD PRIMARY KEY (i) EXECUTE = UNTIL COMMIT 10 */", q_len_arg=75) at /10.5o/sql/log_event_server.cc:1853

#13 0x000055d6f6c9e8a9 in Query_log_event::do_apply_event (this=0x7f6ef803c470, rgi=0x7f6ef80387e0) at /10.5o/sql/log_event_server.cc:1530

#14 0x000055d6f66fe16f in Log_event::apply_event (this=0x7f6ef803c470, rgi=0x7f6ef80387e0) at /10.5o/sql/log_event.h:1487

#15 0x000055d6f66f0bb0 in apply_event_and_update_pos_apply (ev=0x7f6ef803c470, thd=0x7f6ef4000d60, rgi=0x7f6ef80387e0, reason=0) at /10.5o/sql/slave.cc:3987

#16 0x000055d6f66f1358 in apply_event_and_update_pos_for_parallel (ev=0x7f6ef803c470, thd=0x7f6ef4000d60, rgi=0x7f6ef80387e0) at /10.5o/sql/slave.cc:4169

#17 0x000055d6f6a18a34 in rpt_handle_event (qev=0x7f6ef803c750, rpt=0x7f6ef8029150) at /10.5o/sql/rpl_parallel.cc:61

#18 0x000055d6f6a1bf45 in handle_rpl_parallel_thread (arg=0x7f6ef8029150) at /10.5o/sql/rpl_parallel.cc:1341

#19 0x000055d6f6eb0a82 in pfs_spawn_thread (arg=0x7f6efc01b340) at /10.5o/storage/perfschema/pfs.cc:1862

#20 0x00007f6f479756db in start_thread (arg=0x7f6f40075700) at pthread_create.c:463

#21 0x00007f6f46b5b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95