Creating table with CONNECT engine causes server crash

wget https://downloads.mariadb.org/f/mariadb-10.1.26/bintar-linux-glibc_214-x86_64/mariadb-10.1.26-linux-glibc_214-x86_64.tar.gz

tar -tvzf mariadb-10.1.26-linux-glibc_214-x86_64.tar.gz

cd mariadb-10.1.26-linux-glibc_214-x86_64/lib/plugin/

sudo install ha_connect.so /usr/local/mariadb/columnstore/mysql/lib/plugin/

sudo yum install unixODBC

cd /usr/lib64

sudo ln -s libodbc.so libodbc.so.1

mcsmysql

INSTALL SONAME 'ha_connect.so';

USE db1;

CREATE TABLE `tab` (

  `id` int(11) NOT NULL AUTO_INCREMENT,

  `str` varchar(50) DEFAULT NULL

)

engine=CONNECT table_type=MYSQL

connection='mysql://user:password@hostname/db1/tab';

170914 13:44:12 [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: 10.1.26-MariaDB

key_buffer_size=536870912

read_buffer_size=4194304

max_used_connections=1

max_threads=153

thread_count=1

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1780789 K  bytes of memory

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

Thread pointer: 0x7f770a406308

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 = 0x7f76cc568d98 thread_stack 0x80000

/usr/local/mariadb/columnstore/mysql//bin/mysqld(my_print_stacktrace+0x29)[0x7f77086127f9]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(handle_fatal_signal+0x305)[0x7f77081d9925]

/lib64/libpthread.so.0(+0xf370)[0x7f7707823370]

/usr/local/mariadb/columnstore/mysql/lib/plugin/ha_connect.so(+0x8af5f)[0x7f76b5ec8f5f]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(+0x587914)[0x7f77081da914]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z24plugin_foreach_with_maskP3THDPFcS0_P13st_plugin_intPvEijS3_+0x21e)[0x7f770808f24e]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z15ha_table_existsP3THDPKcS2_PP10handlerton+0x2a7)[0x7f77081e24e7]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(+0x4aed42)[0x7f7708101d42]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z26mysql_create_table_no_lockP3THDPKcS2_P22Table_specification_stP10Alter_infoPbi+0xfa)[0x7f770810258a]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z18mysql_create_tableP3THDP10TABLE_LISTP22Table_specification_stP10Alter_info+0xef)[0x7f770810270f]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z21mysql_execute_commandP3THD+0x6f13)[0x7f7708084073]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x2eb)[0x7f770808496b]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x2206)[0x7f770808ace6]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z10do_commandP3THD+0xc9)[0x7f770808b4e9]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z24do_handle_one_connectionP3THD+0x1c4)[0x7f77081458b4]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(handle_one_connection+0x37)[0x7f7708145947]

/lib64/libpthread.so.0(+0x7dc5)[0x7f770781bdc5]

/lib64/libc.so.6(clone+0x6d)[0x7f77059d876d]

Trying to get some variables.

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

Query (0x7f76ac034a00): is an invalid pointer

Connection ID (thread ID): 7

Status: NOT_KILLED

Optimizer switch: index_merge=off,index_merge_union=off,index_merge_sort_union=off,index_merge_intersection=off,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=off,derived_merge=off,derived_with_keys=off,firstmatch=off,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=off,partial_match_table_scan=off,subquery_cache=off,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=off,join_cache_hashed=off,join_cache_bka=off,optimize_join_buffer_size=off,table_elimination=off,extended_keys=off,exists_to_in=on,orderby_uses_equalities=off

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains

information that should help you find out what is causing the crash.

We think the query pointer is invalid, but we will try to print it anyway.

Query: CREATE TABLE `tab` (

  `id` int(11) NOT NULL AUTO_INCREMENT,

  `str` varchar(50) DEFAULT NULL

)

engine=CONNECT table_type=MYSQL

connection='mysql://maxscale:password@35.166.238.119/db1/tab'

wget http://ftp.utexas.edu/mariadb//mariadb-10.1.26/yum/rhel7-amd64/rpms/MariaDB-10.1.26-centos7-x86_64-connect-engine.rpm

mkdir rpm_contents

cd rpm_contents

rpm2cpio ../MariaDB-10.1.26-centos7-x86_64-connect-engine.rpm | cpio -idmv

cd ./usr/lib64/mysql/plugin/

sudo install ha_connect.so /usr/local/mariadb/columnstore/mysql/lib/plugin/

170914 14:13:57 [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: 10.1.26-MariaDB

key_buffer_size=536870912

read_buffer_size=4194304

max_used_connections=1

max_threads=153

thread_count=1

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1780789 K  bytes of memory

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

Thread pointer: 0x7f92ac3c5528

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 = 0x7f926c36cd98 thread_stack 0x80000

/usr/local/mariadb/columnstore/mysql//bin/mysqld(my_print_stacktrace+0x29)[0x7f92a94517f9]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(handle_fatal_signal+0x305)[0x7f92a9018925]

/lib64/libpthread.so.0(+0xf370)[0x7f92a8662370]

/usr/local/mariadb/columnstore/mysql/lib/plugin/ha_connect.so(+0x8b5ea)[0x7f92780f95ea]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(+0x587914)[0x7f92a9019914]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z24plugin_foreach_with_maskP3THDPFcS0_P13st_plugin_intPvEijS3_+0x21e)[0x7f92a8ece24e]

/usr/local/mariadb/columnstore/mysql//bin/mysqld(_Z15ha_table_existsP3THDPKcS2_PP10handlerton+0x2a7)[0x7f92a90214e7]

mysys/stacktrace.c:268(my_print_stacktrace)[0x7f92a8f40d42]

sql/handler.cc:4958(discover_existence(THD*, st_plugin_int*, void*))[0x7f92a8f4158a]

sql/sql_table.cc:4781(create_table_impl(THD*, char const*, char const*, char const*, char const*, char const*, DDL_options_st, HA_CREATE_INFO*, Alter_info*, int, bool*, st_key**, unsigned int*, st_mysql_const_unsigned_lex_string*))[0x7f92a8f4170f]

sql/sql_parse.cc:3523(mysql_execute_command(THD*))[0x7f92a8ec3073]

sql/sql_parse.cc:7388(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0x7f92a8ec396b]

sql/sql_parse.cc:1513(dispatch_command(enum_server_command, THD*, char*, unsigned int))[0x7f92a8ec9ce6]

sql/sql_parse.cc:1160(do_command(THD*))[0x7f92a8eca4e9]

sql/sql_connect.cc:1349(do_handle_one_connection(THD*))[0x7f92a8f848b4]

sql/sql_connect.cc:1263(handle_one_connection)[0x7f92a8f84947]

/lib64/libpthread.so.0(+0x7dc5)[0x7f92a865adc5]

/lib64/libc.so.6(clone+0x6d)[0x7f92a681776d]