[Draft] Out of memory upon SELECT UNION

2017-06-28  9:53:33 5960 [ERROR] mysqld.exe: Out of memory (Needed 4294967288 bytes)

2017-06-28  9:53:33 5960 [ERROR] Out of memory; check if mysqld or some other process uses all available memory; if not, you may have to use 'ulimit' to allow mysqld to use more memory or you can add more swap space

170628  9:53:33 [ERROR] mysqld got exception 0xc0000005 ;

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: 10.2.7-MariaDB-debug-log

key_buffer_size=1048576

read_buffer_size=131072

max_used_connections=7

max_threads=65537

thread_count=12

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 4198 K  bytes of memory

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

Thread pointer: 0xcd7bb37228

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...

mysqld.exe!SQL_SELECT::cleanup()[opt_range.cc:1212]

mysqld.exe!Filesort::cleanup()[filesort.cc:431]

mysqld.exe!Filesort::~Filesort()[filesort.h:74]

mysqld.exe!Filesort::`scalar deleting destructor'()

mysqld.exe!st_join_table::cleanup()[sql_select.cc:11628]

mysqld.exe!JOIN::cleanup()[sql_select.cc:12041]

mysqld.exe!JOIN::destroy()[sql_select.cc:3501]

mysqld.exe!st_select_lex::cleanup()[sql_union.cc:1461]

mysqld.exe!st_select_lex_unit::cleanup()[sql_union.cc:1294]

mysqld.exe!mysql_union()[sql_union.cc:42]

mysqld.exe!handle_select()[sql_select.cc:351]

mysqld.exe!execute_sqlcom_select()[sql_parse.cc:6442]

mysqld.exe!mysql_execute_command()[sql_parse.cc:3457]

mysqld.exe!mysql_parse()[sql_parse.cc:7879]

mysqld.exe!dispatch_command()[sql_parse.cc:1819]

mysqld.exe!do_command()[sql_parse.cc:1361]

mysqld.exe!threadpool_process_request()[threadpool_common.cc:346]

mysqld.exe!tp_callback()[threadpool_common.cc:192]

mysqld.exe!tp_callback()[threadpool_win.cc:378]

mysqld.exe!work_callback()[threadpool_win.cc:452]

ntdll.dll!RtlFreeUnicodeString()

ntdll.dll!RtlFreeUnicodeString()

KERNEL32.DLL!BaseThreadInitThunk()

ntdll.dll!RtlUserThreadStart()

Trying to get some variables.

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

Query (0xcd085a3620): /* GenTest::Transform::ExecuteAsUnion */ (  SELECT DISTINCT FOUND_ROWS() AS field1 FROM `dd` WHERE `col_datetime_key` HAVING BINARY -4642648265865560064 ORDER BY DES_ENCRYPT( 0, `col_varchar_nokey` ), BENCHMARK( 5, VAR_SAMP( `col_date_key` ) )  /* QNO 6284 CON_ID 16 */  ) UNION ALL (  SELECT DISTINCT FOUND_ROWS() AS field1 FROM `dd` WHERE `col_datetime_key` HAVING BINARY -4642648265865560064 ORDER BY DES_ENCRYPT( 0, `col_varchar_nokey` ), BENCHMARK( 5, VAR_SAMP( `col_date_key` ) )  /* QNO 6284 CON_ID 16 */  LIMIT 0 ) /* TRANSFORM_OUTCOME_UNORDERED_MATCH */ /* QNO 6310 CON_ID 16 */

Connection ID (thread ID): 16

Status: NOT_KILLED

seed=1498632567

Command line:

E:\buildbot\rqg/runall.pl --no-mask --seed=time --threads=5 --duration=400 --queries=100M --reporters=QueryTimeout,Backtrace,ErrorLog,Deadlock,Shutdown --redefine=conf/mariadb/redefine_random_keys.yy --redefine=conf/mariadb/redefine_set_session_vars.yy --validators=TransformerNoComparator --transformers=ConvertSubqueriesToViews,DisableOptimizations,EnableOptimizations,ExecuteAsCTE,ExecuteAsInsertSelect,ExecuteAsPreparedOnce,ExecuteAsSelectItem,ExecuteAsUnion,ExecuteAsUpdateDelete,ExecuteAsView,NullIf,OrderBy,StraightJoin,ExecuteAsExecuteImmediate --grammar=conf/mariadb/functions.yy --mtr-build-thread=150 --basedir1=D:\qa-win-debug\build --vardir1=E:\buildbot\vardirs\qa-win-debug\10.2-132\optim-crash-tests/current1_1