INSERT ... SELECT on self on a Columnstore_cache table causes the server to crash

MariaDB [test]> DROP TABLE IF EXISTS cache1;

Query OK, 0 rows affected (0.288 sec)

MariaDB [test]> CREATE TABLE cache1 (a int, b varchar(44))engine=columnstore_cache;

Query OK, 0 rows affected (0.215 sec)

MariaDB [test]> INSERT INTO cache1 SELECT * FROM cache1;

ERROR 2013 (HY000): Lost connection to MySQL server during query

MariaDB [test]> 

2020-06-18 11:20:56 0 [Note] /usr/sbin/mysqld: ready for connections.

Version: '10.5.4-MariaDB-debug'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  Source distribution

200618 11:21:23 [ERROR] mysqld got signal 11 ;

This could be because you hit a bug. It is also possible that this binary

or one of the libraries it was linked against is corrupt, improperly built,

or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help

diagnose the problem, but since we have already crashed,

something is definitely wrong and this may fail.

Server version: 10.5.4-MariaDB-debug

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=1

max_threads=153

thread_count=2

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467906 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f2c8c000d78

Attempting backtrace. You can use the following information to find out

where mysqld died. If you see no messages after this, something went

terribly wrong...

stack_bottom = 0x7f2cc806cd98 thread_stack 0x49000

/usr/sbin/mysqld(my_print_stacktrace+0x40)[0x55ac9843934b]

mysys/stacktrace.c:306(my_print_stacktrace)[0x55ac97af5d27]

??:0(__restore_rt)[0x7f2cea372890]

mysql/ha_mcs.cpp:1293(cache_copy_status(void*, void*))[0x7f2ce62f51cc]

mysql/ha_mcs.cpp:1294(cache_copy_status(void*, void*))[0x7f2ce62f51ed]

/usr/sbin/mysqld(thr_multi_lock+0x229)[0x55ac9843ce76]

mysys/thr_lock.c:1333(thr_multi_lock)[0x55ac97c46cad]

sql/lock.cc:349(mysql_lock_tables(THD*, st_mysql_lock*, unsigned int))[0x55ac97c46aaf]

sql/lock.cc:301(mysql_lock_tables(THD*, TABLE**, unsigned int, unsigned int))[0x55ac977029e2]

sql/sql_base.cc:5449(lock_tables(THD*, TABLE_LIST*, unsigned int, unsigned int))[0x55ac97701f0a]

sql/sql_base.cc:5169(open_and_lock_tables(THD*, DDL_options_st const&, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*))[0x55ac976b95d5]

sql/sql_base.h:509(open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int))[0x55ac977a7078]

sql/sql_parse.cc:4637(mysql_execute_command(THD*))[0x55ac977b23bd]

sql/sql_parse.cc:7993(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x55ac9779e73a]

sql/sql_parse.cc:1877(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x55ac9779ce71]

sql/sql_parse.cc:1355(do_command(THD*))[0x55ac97941b60]

sql/sql_connect.cc:1411(do_handle_one_connection(CONNECT*, bool))[0x55ac979418c9]

sql/sql_connect.cc:1315(handle_one_connection)[0x55ac97e7d587]

nptl/pthread_create.c:463(start_thread)[0x7f2cea3676db]

x86_64/clone.S:97(clone)[0x7f2ce954d88f]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x7f2c8c012750): INSERT INTO cache1 SELECT * FROM cache1

Connection ID (thread ID): 4

Status: NOT_KILLED