MyRocks: To set rocksdb_update_cf_options with a nonexistent column family created a partially-defined column family which could cause a server exit.

Core was generated by `/sdc/PS031219-percona-server-8.0.18-9-linux-x86_64-debug/bin/mysqld --no-defaul'.
Program terminated with signal 6, Aborted.
#0  0x00007fbda45b2a61 in __pthread_kill (threadid=<optimized out>, signo=6) at ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c:59
59        val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid),
(gdb) bt
+bt
#0  0x00007fbda45b2a61 in __pthread_kill (threadid=<optimized out>, signo=6) at ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c:59
#1  0x00000000049e6f27 in my_write_core (sig=6) at /home/hrvoje/sdc/release-8.0.18-9_dbg/mysys/stacktrace.cc:305
#2  0x0000000003924059 in handle_fatal_signal (sig=6) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/signal_handler.cc:172
#3  <signal handler called>
#4  0x00007fbda23f9337 in __GI_raise ([email protected]=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
#5  0x00007fbda23faa28 in __GI_abort () at abort.c:90
#6  0x00007fbd5070eb3d in myrocks::rdb_i_s_global_info_fill_table (thd=0x7fbd38420000, tables=0x7fbd38473e28, cond=0x0) at /home/hrvoje/sdc/release-8.0.18-9_dbg/storage/rocksdb/rdb_i_s.cc:807
#7  0x00000000037c9bbf in do_fill_information_schema_table (thd=0x7fbd38420000, table_list=0x7fbd38473e28, qep_tab=0x7fbd3857a938) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_show.cc:4295
#8  0x0000000003a4f2a5 in MaterializeInformationSchemaTableIterator::Init (this=0x7fbd3857ab50) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/composite_iterators.cc:1978
#9  0x000000000384ace7 in SELECT_LEX_UNIT::ExecuteIteratorQuery (this=0x7fbd38473378, thd=0x7fbd38420000) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_union.cc:1488
#10 0x000000000384b1cc in SELECT_LEX_UNIT::execute (this=0x7fbd38473378, thd=0x7fbd38420000) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_union.cc:1578
#11 0x00000000037a57e4 in Sql_cmd_dml::execute_inner (this=0x7fbd384743d8, thd=0x7fbd38420000) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_select.cc:900
#12 0x00000000037a4f09 in Sql_cmd_dml::execute (this=0x7fbd384743d8, thd=0x7fbd38420000) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_select.cc:705
#13 0x000000000373fefa in mysql_execute_command (thd=0x7fbd38420000, first_level=true) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_parse.cc:4670
#14 0x00000000037428d7 in mysql_parse (thd=0x7fbd38420000, parser_state=0x7fbda0d9a9f0, update_userstat=false) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_parse.cc:5481
#15 0x0000000003737316 in dispatch_command (thd=0x7fbd38420000, com_data=0x7fbda0d9bb80, command=COM_QUERY) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_parse.cc:1815
#16 0x000000000373576f in do_command (thd=0x7fbd38420000) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/sql_parse.cc:1302
#17 0x000000000390d6df in handle_connection (arg=0x7fbd4fa365c0) at /home/hrvoje/sdc/release-8.0.18-9_dbg/sql/conn_handler/connection_handler_per_thread.cc:308
#18 0x000000000514fa1a in pfs_spawn_thread (arg=0x7fbda048b1e0) at /home/hrvoje/sdc/release-8.0.18-9_dbg/storage/perfschema/pfs.cc:2855
#19 0x00007fbda45ade65 in start_thread (arg=0x7fbda0d9c700) at pthread_create.c:307
#20 0x00007fbda24c188d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

# mysqld options required for replay: --plugin-load-add=RocksDB=ha_rocksdb.so --init-file=/home/hrvoje/percona-qa/plugins_80-dbg-hack.sql
SET @@global.rocksdb_update_cf_options='cf1={write_buffer_size=8m;target_file_size_base=2m};cf2={write_buffer_size=16m;max_bytes_for_level_multiplier=8};cf3={target_file_size_base=4m};';
select * from INFORMATION_SCHEMA.ROCKSDB_GLOBAL_INFO;