Spider crash with XA (10.4.x only)

2019-06-18  9:19:11 0 [Note] mysqld: ready for connections.

Version: '10.4.5-MariaDB-1:10.4.5+maria~bionic'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  mariadb.org binary distribution

190618  9:19:57 [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: 10.4.5-MariaDB-1:10.4.5+maria~bionic

key_buffer_size=134217728

read_buffer_size=2097152

max_used_connections=1

max_threads=102

thread_count=27

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 760240 K  bytes of memory

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

Thread pointer: 0x7f5800000c08

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 = 0x7f58cc11add8 thread_stack 0x49000

mysqld(my_print_stacktrace+0x2e)[0x5627474462ce]

mysqld(handle_fatal_signal+0x515)[0x562746ec1275]

/lib/x86_64-linux-gnu/libpthread.so.0(+0x12890)[0x7f58d3611890]

mysqld(_Z16xid_cache_deleteP3THDP9XID_STATE+0x16)[0x562746e48e26]

/usr/lib/mysql/plugin/ha_spider.so(_Z25spider_internal_xa_commitP3THDP21st_spider_transactionP5xid_tP5TABLES6_+0x537)[0x7f58cd2ae637]

/usr/lib/mysql/plugin/ha_spider.so(_Z13spider_commitP10handlertonP3THDb+0xa4)[0x7f58cd2b1554]

mysqld(+0x851ef5)[0x562746ec1ef5]

mysqld(_Z15trans_xa_commitP3THD+0x34d)[0x562746e495cd]

mysqld(_Z21mysql_execute_commandP3THD+0x3980)[0x562746cb6510]

mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x22a)[0x562746cbbcca]

mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x166d)[0x562746cbe48d]

mysqld(_Z10do_commandP3THD+0x148)[0x562746cbf8f8]

mysqld(_Z24do_handle_one_connectionP7CONNECT+0x2c2)[0x562746d994c2]

mysqld(handle_one_connection+0x3d)[0x562746d9958d]

/lib/x86_64-linux-gnu/libpthread.so.0(+0x76db)[0x7f58d36066db]

/lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)[0x7f58d2a0488f]

Trying to get some variables.

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

Query (0x7f5800011f80): XA COMMIT '_sa_70fbd0dd1c31f43bb9a16f18b670eaa6'

Connection ID (thread ID): 29

Status: NOT_KILLED

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

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.

Writing a core file...

Working directory at /var/lib/mysql

Resource Limits:

Limit                     Soft Limit           Hard Limit           Units     

Max cpu time              unlimited            unlimited            seconds   

Max file size             unlimited            unlimited            bytes     

Max data size             unlimited            unlimited            bytes     

Max stack size            8388608              unlimited            bytes     

Max core file size        unlimited            unlimited            bytes     

Max resident set          unlimited            unlimited            bytes     

Max processes             unlimited            unlimited            processes 

Max open files            1048576              1048576              files     

Max locked memory         16777216             16777216             bytes     

Max address space         unlimited            unlimited            bytes     

Max file locks            unlimited            unlimited            locks     

Max pending signals       62717                62717                signals   

Max msgqueue size         819200               819200               bytes     

Max nice priority         0                    0                    

Max realtime priority     0                    0                    

Max realtime timeout      unlimited            unlimited            us        

Core pattern: |/usr/share/apport/apport %p %s %c %d %P

CREATE TABLE `mytable_shard0` (

  id INT unsigned NOT NULL,

  some_field TEXT(100) DEFAULT NULL, 

  PRIMARY KEY (`id`),

) ENGINE=InnoDB ROW_FORMAT=COMPACT

CREATE OR REPLACE SERVER srvA

FOREIGN DATA WRAPPER mysql 

OPTIONS (USER 'spider', PASSWORD 'spider', PORT 3306, HOST '192.168.199.10', DATABASE 'testdb');

CREATE OR REPLACE SERVER srvB

FOREIGN DATA WRAPPER mysql 

OPTIONS (USER 'spider', PASSWORD 'spider', PORT 3306, HOST '192.168.199.11', DATABASE 'testdb');

create table mytable (

  id INT unsigned NOT NULL,

  some_field TEXT(100) DEFAULT NULL, 

  PRIMARY KEY (id),

)

ENGINE=spider

partition by list (mod(id, 2)) (

    partition p00 values in(0)  comment = 'server "srvA", table "mytable_shard0"',

    partition p01 values in(1)  comment = 'server "srvB", table "mytable_shard1"'

);

XA START 'test';

INSERT INTO mytable (id, some_field) VALUES (0, "foo"), (1, "bar");

XA END 'test';

XA PREPARE 'test';

XA COMMIT 'test';