Assertion `srv_undo_sources || trx->undo_no == 0 || (!purge_sys.enabled() && (srv_is_being_started || trx_rollback_is_active || srv_force_recovery >= SRV_FORCE_NO_BACKGROUND)) <...>' failed in trx_purge_add_undo_to_history

--source include/have_innodb.inc

CREATE TABLE t1 (a INT, b TEXT, FULLTEXT KEY ftidx (b)) ENGINE=InnoDB;

ALTER TABLE t1 DROP KEY ftidx;

INSERT INTO t1 (a) VALUES (2),(2);

--error ER_DUP_ENTRY

ALTER TABLE t1 ADD UNIQUE KEY uidx (a), ADD FULLTEXT KEY ftidx (b);

--source include/restart_mysqld.inc

# Cleanup

DROP TABLE t1;

2020-04-23 19:19:30 0 [Note] InnoDB: FTS optimize thread exiting.

2020-04-23 19:19:30 0 [Note] Event Scheduler: Purging the queue. 0 events

mysqld: /data/src/10.4/storage/innobase/trx/trx0purge.cc:269: void trx_purge_add_undo_to_history(const trx_t*, trx_undo_t*&, mtr_t*): Assertion `srv_undo_sources || trx->undo_no == 0 || (!purge_sys.enabled() && (srv_is_being_started || trx_rollback_is_active || srv_force_recovery >= SRV_FORCE_NO_BACKGROUND)) || ((trx->mysql_thd || trx->internal) && srv_fast_shutdown)' failed.

200423 19:19:30 [ERROR] mysqld got signal 6 ;

#7  0x00007f02471c1102 in __GI___assert_fail (assertion=0x55769dbcb6c0 "srv_undo_sources || trx->undo_no == 0 || (!purge_sys.enabled() && (srv_is_being_started || trx_rollback_is_active || srv_force_recovery >= SRV_FORCE_NO_BACKGROUND)) || ((trx->mysql_thd || trx->interna"..., file=0x55769dbcaf60 "/data/src/10.4/storage/innobase/trx/trx0purge.cc", line=269, function=0x55769dbce2a0 <trx_purge_add_undo_to_history(trx_t const*, trx_undo_t*&, mtr_t*)::__PRETTY_FUNCTION__> "void trx_purge_add_undo_to_history(const trx_t*, trx_undo_t*&, mtr_t*)") at assert.c:101

#8  0x000055769c98b967 in trx_purge_add_undo_to_history (trx=0x7f023df22930, undo=@0x7f023df23950: 0x61200000a6c0, mtr=0x7ffcae14db70) at /data/src/10.4/storage/innobase/trx/trx0purge.cc:269

#9  0x000055769c9e2e1a in trx_write_serialisation_history (trx=0x7f023df22930, mtr=0x7ffcae14db70) at /data/src/10.4/storage/innobase/trx/trx0trx.cc:1133

#10 0x000055769c9e7418 in trx_commit_low (trx=0x7f023df22930, mtr=0x7ffcae14db70) at /data/src/10.4/storage/innobase/trx/trx0trx.cc:1572

#11 0x000055769c9e760d in trx_commit (trx=0x7f023df22930) at /data/src/10.4/storage/innobase/trx/trx0trx.cc:1640

#12 0x000055769c9e8074 in trx_commit_for_mysql (trx=0x7f023df22930) at /data/src/10.4/storage/innobase/trx/trx0trx.cc:1786

#13 0x000055769cb761b1 in dict_table_try_drop_aborted (table=0x6190000ee808, table_id=20, ref_count=0) at /data/src/10.4/storage/innobase/dict/dict0dict.cc:276

#14 0x000055769cb76812 in dict_table_close (table=0x6190000ee808, dict_locked=0, try_drop=1) at /data/src/10.4/storage/innobase/dict/dict0dict.cc:362

#15 0x000055769c8465cd in row_prebuilt_free (prebuilt=0x620000040108, dict_locked=0) at /data/src/10.4/storage/innobase/row/row0mysql.cc:1042

#16 0x000055769c4f6675 in ha_innobase::close (this=0x61d00027d910) at /data/src/10.4/storage/innobase/handler/ha_innodb.cc:6490

#17 0x000055769bf64d43 in handler::ha_close (this=0x61d00027d910) at /data/src/10.4/sql/handler.cc:2820

#18 0x000055769ba9126d in closefrm (table=0x62000003f0f0) at /data/src/10.4/sql/table.cc:4053

#19 0x000055769bda1021 in intern_close_table (table=0x62000003f0f0) at /data/src/10.4/sql/table_cache.cc:221

#20 0x000055769bda170e in tc_purge (mark_flushed=true) at /data/src/10.4/sql/table_cache.cc:334

#21 0x000055769b600d8a in purge_tables (purge_flag=true) at /data/src/10.4/sql/sql_base.cc:335

#22 0x000055769bda4368 in tdc_start_shutdown () at /data/src/10.4/sql/table_cache.cc:657

#23 0x000055769b4ab522 in clean_up (print_message=true) at /data/src/10.4/sql/mysqld.cc:1984

#24 0x000055769b4ba4f8 in mysqld_main (argc=<error reading variable: Cannot access memory at address 0x3d40>, argv=<error reading variable: Cannot access memory at address 0x3d80>) at /data/src/10.4/sql/mysqld.cc:5922

#25 0x000055769b4a1595 in main (argc=23, argv=0x7ffcae14e908) at /data/src/10.4/sql/main.cc:25