Assertion `table->file->ht->db_type == DB_TYPE_NDBCLUSTER || error != 146' failed

#0  __pthread_kill (threadid=<optimized out>, signo=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:62
#1  0x0000000004626c6e in my_write_core (sig=6) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/mysys/stacktrace.cc:278
#2  0x0000000003480b89 in handle_fatal_signal (sig=6) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/signal_handler.cc:266
#3  <signal handler called>
#4  0x00007feec42fd428 in __GI_raise ([email protected]=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#5  0x00007feec42ff02a in __GI_abort () at abort.c:89
#6  0x00007feec42f5bd7 in __assert_fail_base (fmt=<optimized out>, [email protected]=0x584e1d0 "table->file->ht->db_type == DB_TYPE_NDBCLUSTER || error != 146", [email protected]=0x584dfc0 "/mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/auth/sql_user_table.cc", [email protected]=2495, [email protected]=0x584f3a0 <handle_grant_table(THD*, TABLE_LIST*, ACL_TABLES, bool, LEX_USER*, LEX_USER*)::__PRETTY_FUNCTION__> "int handle_grant_table(THD*, TABLE_LIST*, ACL_TABLES, bool, LEX_USER*, LEX_USER*)") at assert.c:92
#7  0x00007feec42f5c82 in __GI___assert_fail (assertion=0x584e1d0 "table->file->ht->db_type == DB_TYPE_NDBCLUSTER || error != 146", file=0x584dfc0 "/mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/auth/sql_user_table.cc", line=2495, function=0x584f3a0 <handle_grant_table(THD*, TABLE_LIST*, ACL_TABLES, bool, LEX_USER*, LEX_USER*)::__PRETTY_FUNCTION__> "int handle_grant_table(THD*, TABLE_LIST*, ACL_TABLES, bool, LEX_USER*, LEX_USER*)") at assert.c:101
#8  0x00000000035b0907 in handle_grant_table (thd=0x7fee7e41c000, tables=0x7feec419c490, table_no=TABLE_TABLES_PRIV, drop=true, user_from=0x7fee7eb9e4d0, user_to=0x0) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/auth/sql_user_table.cc:2494
#9  0x00000000035b743a in handle_grant_data (thd=0x7fee7e41c000, tables=0x7feec419c490, drop=true, user_from=0x7fee7eb9e4d0, user_to=0x0) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/auth/sql_user.cc:1678
#10 0x00000000035b8a62 in mysql_drop_user (thd=0x7fee7e41c000, list=..., if_exists=true) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/auth/sql_user.cc:2028
#11 0x00000000032a4966 in mysql_execute_command (thd=0x7fee7e41c000, first_level=true) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:4336
#12 0x00000000032aaa5c in mysql_parse (thd=0x7fee7e41c000, parser_state=0x7feec41a31a0, update_userstat=false, force_primary_storage_engine=false) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:6011
#13 0x00000000032ae44d in wsrep_mysql_parse (thd=0x7fee7e41c000, rawbuf=0x7fee7eb82c28 "DROP USER IF EXISTS 'mysql.pxc.sst.user'@localhost", length=50, parser_state=0x7feec41a31a0, update_userstat=false, force_primary_storage_engine=false) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:7186
#14 0x000000000329cd44 in dispatch_command (thd=0x7fee7e41c000, com_data=0x7feec41a4c20, command=COM_QUERY) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:2023
#15 0x0000000003486a17 in Srv_session::execute_command (this=0x7fee7e41c000, command=COM_QUERY, data=0x7feec41a4c20, client_cs=0x6ea0d60 <my_charset_utf8_general_ci>, callbacks=0x6be73a0 <wsp::Sql_service_context_base::sql_service_callbacks>, text_or_binary=CS_TEXT_REPRESENTATION, callbacks_context=0x7fee7e04e770) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/srv_session.cc:1105
#16 0x000000000346837c in command_service_run_command (session=0x7fee7e41c000, command=COM_QUERY, data=0x7feec41a4c20, client_cs=0x6ea0d60 <my_charset_utf8_general_ci>, callbacks=0x6be73a0 <wsp::Sql_service_context_base::sql_service_callbacks>, text_or_binary=CS_TEXT_REPRESENTATION, service_callbacks_ctx=0x7fee7e04e770) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/command_service.cc:84
#17 0x00000000034aef1a in server_session_execute (session=0x7fee7e41c000, query="DROP USER IF EXISTS 'mysql.pxc.sst.user'@localhost;", safe_query=0x0) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/wsrep_sst.cc:901
#18 0x00000000034af693 in wsrep_remove_sst_user (initialize_thread=false) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/wsrep_sst.cc:1025
#19 0x000000000329ed9b in shutdown (thd=0x7fee80c24000, level=SHUTDOWN_DEFAULT) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:2544
#20 0x00000000031b67c9 in Sql_cmd_shutdown::execute (this=0x7fee7e6999c8, thd=0x7fee80c24000) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_admin.cc:1744
#21 0x00000000032a7dda in mysql_execute_command (thd=0x7fee80c24000, first_level=true) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:5194
#22 0x00000000032aaa5c in mysql_parse (thd=0x7fee80c24000, parser_state=0x7feec41a93c0, update_userstat=false, force_primary_storage_engine=false) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:6011
#23 0x00000000032ae44d in wsrep_mysql_parse (thd=0x7fee80c24000, rawbuf=0x7fee7e699028 "shutdown", length=8, parser_state=0x7feec41a93c0, update_userstat=false, force_primary_storage_engine=false) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:7186
#24 0x000000000329cd44 in dispatch_command (thd=0x7fee80c24000, com_data=0x7feec41aac90, command=COM_QUERY) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:2023
#25 0x000000000329a627 in do_command (thd=0x7fee80c24000) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/sql_parse.cc:1417
#26 0x00000000034692ea in handle_connection (arg=0x7fee9e2ca190) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/sql/conn_handler/connection_handler_per_thread.cc:317
#27 0x000000000471d6c2 in pfs_spawn_thread (arg=0x7fee9e2d3e20) at /mnt/workspace/pxc80.build/BUILD_TYPE/debug/Host/min-xenial-x64/storage/perfschema/pfs.cc:2836
#28 0x00007feec601b6ba in start_thread (arg=0x7feec41ac700) at pthread_create.c:333
#29 0x00007feec43cf41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109