IS.columnstore_columns crashes when DDL is simultaneously executing

8275 | root | localhost | vo | Query | 15 | Unlocking tables | DROP TABLE starpdv_vo_2013_05_08 | 0.000 |

I don't unfortunatly done show processlit but the crash just happen on that
MariaDB [(none)]> show full processlist;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...

Note that the schema table size requested by UDF was not the one beeing created or dropped .

180222 15:49:05 [ERROR] mysqld got signal 6 ;
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: 10.2.10-MariaDB-log
key_buffer_size=536870912
read_buffer_size=4194304
max_used_connections=5
max_threads=153
thread_count=12
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1780876 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7fbc800009a8
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 = 0x7fbcf15aed18 thread_stack 0x80000
/usr/local/mariadb/columnstore/mysql//bin/mysqld(my_print_stacktrace+0x29)[0x559e0afdeae9]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(handle_fatal_signal+0x3bd)[0x559e0ab23fad]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x110c0)[0x7fbd2c3c50c0]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcf)[0x7fbd2a472fcf]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x7fbd2a4743fa]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(ZN9gnu_cxx27_verbose_terminate_handlerEv+0x15d)[0x7fbd2ad8b0ad]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x8f066)[0x7fbd2ad89066]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x8f0b1)[0x7fbd2ad890b1]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x8f2c9)[0x7fbd2ad892c9]
/usr/local/mariadb/columnstore/lib/libexecplan.so.1(_ZN8execplan20CalpontSystemCatalog10columnRIDsERKNS0_9TableNameEb+0x439d)[0x7fbd030c5b3d]
/usr/local/mariadb/columnstore/mysql/lib/plugin/is_columnstore_columns.so(+0xa09a)[0x7fbcfc5aa09a]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z24get_schema_tables_resultP4JOIN23enum_schema_table_state+0x26f)[0x559e0aa23abf]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_ZN4JOIN10exec_innerEv+0x805)[0x559e0aa0bf75]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_ZN4JOIN4execEv+0x29)[0x559e0aa0c3c9]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z12mysql_selectP3THDP10TABLE_LISTjR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x85b)[0x559e0aa0cc8b]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x11c)[0x559e0aa0d00c]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z21mysql_execute_commandP3THD+0x714f)[0x559e0a9c19cf]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_ZN13sp_instr_stmt9exec_coreEP3THDPj+0x14)[0x559e0ac23b64]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_ZN13sp_lex_keeper23reset_lex_and_exec_coreEP3THDPjbP8sp_instr+0x93)[0x559e0ac29903]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_ZN13sp_instr_stmt7executeEP3THDPj+0x1fc)[0x559e0ac29f0c]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_ZN7sp_head7executeEP3THDb+0x767)[0x559e0ac266f7]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_ZN7sp_head17execute_procedureEP3THDP4ListI4ItemE+0x37b)[0x559e0ac2793b]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(+0x49aa6e)[0x559e0a9b3a6e]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z21mysql_execute_commandP3THD+0x2cca)[0x559e0a9bd54a]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x23d)[0x559e0a9c1c5d]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z18idb_vtable_processP3THDyP9Statement+0x952)[0x559e0a9c2f62]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0xcb4)[0x559e0a9c6174]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z10do_commandP3THD+0xc8)[0x559e0a9c7b28]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x224)[0x559e0aa81984]
/usr/local/mariadb/columnstore/mysql//bin/mysqld(handle_one_connection+0x34)[0x559e0aa81a14]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x7494)[0x7fbd2c3bb494]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)[0x7fbd2a528aff]