[MDEV-10630] rpl.rpl_mdev6020 fails in buildbot with timeout or assertion failure Created: 2016-08-21  Updated: 2018-05-17  Resolved: 2018-05-17

Status: Closed
Project: MariaDB Server
Component/s: Tests
Affects Version/s: 10.0, 10.1
Fix Version/s: N/A

Type: Bug Priority: Major
Reporter: Elena Stepanova Assignee: Michael Widenius
Resolution: Cannot Reproduce Votes: 0
Labels: None

Issue Links:
Relates
relates to MDEV-7069 Fix buildbot failures in main server ... Stalled
relates to MDEV-15272 rpl.rpl_mdev6020, rpl.rpl_parallel_co... Closed

 Description   

http://buildbot.askmonty.org/buildbot/builders/p8-trusty-bintar/builds/31/steps/test/logs/stdio

rpl.rpl_mdev6020 'mix,xtradb'            w2 [ fail ]
 
        Test ended at 2016-07-03 10:05:43
 
 
 
CURRENT_TEST: rpl.rpl_mdev6020
 
=== SHOW MASTER STATUS ===
 
---- 1. ----
 
File	slave-bin.000001
 
Position	237058
 
Binlog_Do_DB	
Binlog_Ignore_DB	
==========================
 
 
 
=== SHOW SLAVE STATUS ===
 
---- 1. ----
 
Slave_IO_State	Waiting for master to send event
 
Master_Host	127.0.0.1
 
Master_User	root
 
Master_Port	16000
 
Connect_Retry	1
 
Master_Log_File	master-bin.000002
 
Read_Master_Log_Pos	328
 
Relay_Log_File	slave-relay-bin.000002
 
Relay_Log_Pos	237598
 
Relay_Master_Log_File	master-bin.000001
 
Slave_IO_Running	Yes
 
Slave_SQL_Running	Yes
 
Replicate_Do_DB	
Replicate_Ignore_DB	
Replicate_Do_Table	
Replicate_Ignore_Table	
Replicate_Wild_Do_Table	
...



 Comments   
Comment by Michael Widenius [ 2016-08-21 ]

The issue is that when running with valgrind, the test takes 500 seconds with InnoDB and 5000 seconds with xtradb. This causes wait_for_pos() to timeout in the rpl_mdev6020 test.

Fixed by increasing wait_for_pos() timeout when running with valgrind.
As the test takes so long with xtradb, I have disabled the test for now when run with valgrind

Comment by Elena Stepanova [ 2016-08-22 ]

As of Aug 17, it was also still failing with the assertion failure on 10.0. 

rpl.rpl_mdev6020 'mix,xtradb'            w2 [ fail ]
 
        Test ended at 2016-08-17 08:04:17
 
 
 
CURRENT_TEST: rpl.rpl_mdev6020
 
Error: Packets out of order (Found: 0, expected 1)
 
Error: Packets out of order (Found: 0, expected 1)
 
Error: Packets out of order (Found: 0, expected 1)
 
mysqltest: At line 43: failed in 'select master_pos_wait('master-bin.000002', 327, 300, '')': 2013: Lost connection to MySQL server during query
 
 
 
The result from queries just before the failure was:
 
include/master-slave.inc
 
[connection master]
 
include/stop_slave.inc
 
include/rpl_stop_server.inc [server_number=1]
 
include/rpl_start_server.inc [server_number=1]
 
SET SQL_LOG_BIN=0;
 
ALTER TABLE mysql.gtid_slave_pos ENGINE = InnoDB;
 
SET SQL_LOG_BIN=1;
 
SET @old_engine= @@GLOBAL.default_storage_engine;
 
SET GLOBAL default_storage_engine=InnoDB;
 
SET @old_parallel= @@GLOBAL.slave_parallel_threads;
 
SET GLOBAL slave_parallel_threads=12;
 
CHANGE MASTER TO master_host='127.0.0.1', master_port=SERVER_MYPORT_1, master_user='root', master_log_file='master-bin.000001', master_log_pos=4;
 
include/start_slave.inc
 
SET SQL_LOG_BIN=0;
 
ALTER TABLE mysql.gtid_slave_pos ENGINE = InnoDB;
 
SET SQL_LOG_BIN=1;
 
 
 
 
 
Server [mysqld.2 - pid: 405, winpid: 405, exit: 256] failed during test run
 
Server log from this test:
 
----------SERVER LOG START-----------
 
160817  8:04:04 [Note] /opt/buildbot-slave/mariadb/dan_demeter1/build/sql/mysqld (mysqld 10.0.27-MariaDB-debug) starting as process 406 ...
 
160817  8:04:04 [Note] Plugin 'ARCHIVE' is disabled.
 
160817  8:04:04 [Note] Plugin 'SEQUENCE' is disabled.
 
160817  8:04:04 [Note] Plugin 'CONNECT' is disabled.
 
160817  8:04:04 [Note] Plugin 'TEST_SQL_DISCOVERY' is disabled.
 
160817  8:04:04 [Note] InnoDB: innodb_empty_free_list_algorithm has been changed to legacy because of small buffer pool size. In order to use backoff, increase buffer pool at least up to 20MB.
 
 
 
160817  8:04:04 [Note] InnoDB: Using mutexes to ref count buffer pool pages
 
2016-08-17 08:04:04 7ff37f7dc780 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
 
2016-08-17 08:04:04 7ff37f7dc780 InnoDB: !!!!!!!! UNIV_SYNC_DEBUG switched on !!!!!!!!!
 
160817  8:04:04 [Note] InnoDB: The InnoDB memory heap is disabled
 
160817  8:04:04 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
 
160817  8:04:04 [Note] InnoDB: Memory barrier is not used
 
160817  8:04:04 [Note] InnoDB: Compressed tables use zlib 1.2.8
 
160817  8:04:04 [Note] InnoDB: Using CPU crc32 instructions
 
160817  8:04:04 [Note] InnoDB: Initializing buffer pool, size = 8.0M
 
160817  8:04:04 [Note] InnoDB: Completed initialization of buffer pool
 
160817  8:04:04 [Note] InnoDB: Highest supported file format is Barracuda.
 
160817  8:04:05 [Note] InnoDB: 128 rollback segment(s) are active.
 
160817  8:04:05 [Note] InnoDB: Waiting for purge to start
 
160817  8:04:05 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.31-77.0 started; log sequence number 1629444
 
160817  8:04:05 [Note] Plugin 'XTRADB_READ_VIEW' is disabled.
 
160817  8:04:05 [Note] Plugin 'XTRADB_INTERNAL_HASH_TABLES' is disabled.
 
160817  8:04:05 [Note] Plugin 'XTRADB_RSEG' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_LOCK_WAITS' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_CMP_RESET' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_CMPMEM_RESET' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_CMP_PER_INDEX_RESET' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_FT_DEFAULT_STOPWORD' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_FT_DELETED' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_FT_BEING_DELETED' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_FT_CONFIG' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_FT_INDEX_CACHE' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_FT_INDEX_TABLE' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_SYS_TABLESTATS' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_SYS_INDEXES' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_SYS_COLUMNS' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_SYS_FIELDS' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_SYS_TABLESPACES' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_SYS_DATAFILES' is disabled.
 
160817  8:04:05 [Note] Plugin 'INNODB_CHANGED_PAGES' is disabled.
 
160817  8:04:05 [Note] Plugin 'SPHINX' is disabled.
 
160817  8:04:05 [Note] Plugin 'BLACKHOLE' is disabled.
 
160817  8:04:05 [Note] Plugin 'FEDERATED' is disabled.
 
160817  8:04:05 [Note] Plugin 'METADATA_LOCK_INFO' is disabled.
 
160817  8:04:05 [Note] Plugin 'FEEDBACK' is disabled.
 
160817  8:04:05 [Note] Plugin 'QUERY_RESPONSE_TIME' is disabled.
 
160817  8:04:05 [Note] Plugin 'QUERY_RESPONSE_TIME_AUDIT' is disabled.
 
160817  8:04:05 [Note] Plugin 'LOCALES' is disabled.
 
160817  8:04:05 [Note] Plugin 'rpl_semi_sync_master' is disabled.
 
160817  8:04:05 [Note] Plugin 'rpl_semi_sync_slave' is disabled.
 
160817  8:04:05 [Note] Plugin 'QUERY_CACHE_INFO' is disabled.
 
160817  8:04:05 [Note] Plugin 'unix_socket' is disabled.
 
160817  8:04:05 [Note] Server socket created on IP: '127.0.0.1'.
 
160817  8:04:05 [Note] /opt/buildbot-slave/mariadb/dan_demeter1/build/sql/mysqld: ready for connections.
 
Version: '10.0.27-MariaDB-debug'  socket: '/opt/buildbot-slave/mariadb/dan_demeter1/build/mysql-test/var/tmp/2/mysqld.2.sock'  port: 16001  Source distribution
 
160817  8:04:06 [Note] 'CHANGE MASTER TO executed'. Previous state master_host='', master_port='3306', master_log_file='', master_log_pos='4'. New state master_host='127.0.0.1', master_port='16000', master_log_file='master-bin.000001', master_log_pos='4'.
 
160817  8:04:06 [Note] Slave I/O thread: connected to master 'root@127.0.0.1:16000',replication started in log 'master-bin.000001' at position 4
 
160817  8:04:06 [Note] Slave SQL thread initialized, starting replication in log 'master-bin.000001' at position 4, relay log './slave-relay-bin.000001' position: 4
 
160817  8:04:06 [Note] Error reading relay log event: slave SQL thread was killed
 
160817  8:04:06 [ERROR] Error reading packet from server: Lost connection to MySQL server during query ( server_errno=2013)
 
160817  8:04:06 [Note] Slave I/O thread exiting, read up to log 'master-bin.000001', position 313
 
160817  8:04:11 [Note] 'CHANGE MASTER TO executed'. Previous state master_host='127.0.0.1', master_port='16000', master_log_file='master-bin.000001', master_log_pos='313'. New state master_host='127.0.0.1', master_port='16000', master_log_file='master-bin.000001', master_log_pos='4'.
 
160817  8:04:11 [Note] Slave I/O thread: connected to master 'root@127.0.0.1:16000',replication started in log 'master-bin.000001' at position 4
 
160817  8:04:11 [Note] Slave SQL thread initialized, starting replication in log 'master-bin.000001' at position 4, relay log './slave-relay-bin.000001' position: 4
 
mysqld: /opt/buildbot-slave/mariadb/dan_demeter1/build/sql/mdl.cc:2409: bool MDL_context::acquire_lock(MDL_request*, ulong): Assertion `(mdl_request->type != MDL_INTENTION_EXCLUSIVE && mdl_request->type != MDL_EXCLUSIVE) || !(get_thd()->rgi_slave && get_thd()->rgi_slave->is_parallel_exec && lock->check_if_conflicting_replication_locks(this))' failed.
 
160817  8:04:16 [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: 10.0.27-MariaDB-debug
 
key_buffer_size=1048576
 
read_buffer_size=131072
 
max_used_connections=4
 
max_threads=153
 
thread_count=4
 
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 62846 K  bytes of memory
 
Hope that's ok; if not, decrease some variables in the equation.
 
 
 
Thread pointer: 0x0x7ff31c000b00
 
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 = 0x7ff36c717db8 thread_stack 0x48000
 
mysys/stacktrace.c:268(my_print_stacktrace)[0xd5ce19]
 
sql/signal_handler.cc:159(handle_fatal_signal)[0x765775]
 
/lib/x86_64-linux-gnu/libpthread.so.0(+0x10340)[0x7ff37ed63340]
 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x39)[0x7ff37e1a4cc9]
 
/lib/x86_64-linux-gnu/libc.so.6(abort+0x148)[0x7ff37e1a80d8]
 
/lib/x86_64-linux-gnu/libc.so.6(+0x2fb86)[0x7ff37e19db86]
 
/lib/x86_64-linux-gnu/libc.so.6(+0x2fc32)[0x7ff37e19dc32]
 
sql/mdl.cc:2405(MDL_context::acquire_lock(MDL_request*, unsigned long))[0x6d4d3b]
 
sql/mdl.cc:2621(MDL_context::upgrade_shared_lock(MDL_ticket*, enum_mdl_type, unsigned long))[0x6d5277]
 
sql/sql_base.cc:1823(wait_while_table_is_used(THD*, TABLE*, ha_extra_function))[0x5988b6]
 
sql/sql_table.cc:8146(simple_rename_or_index_change)[0x67d3e1]
 
sql/sql_alter.cc:314(Sql_cmd_alter_table::execute(THD*))[0x6ccfdd]
 
sql/sql_parse.cc:5115(mysql_execute_command(THD*))[0x5e7d2b]
 
sql/sql_parse.cc:6575(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0x5f0d47]
 
sql/log_event.cc:4365(Query_log_event::do_apply_event(rpl_group_info*, char const*, unsigned int))[0x844a19]
 
sql/log_event.h:1360(Log_event::apply_event(rpl_group_info*))[0x56b17c]
 
include/my_atomic.h:210(my_atomic_add64)[0x70c493]
 
sql/rpl_parallel.cc:1201(handle_rpl_parallel_thread)[0x710871]
 
perfschema/pfs.cc:1863(pfs_spawn_thread)[0x97ef09]
 
/lib/x86_64-linux-gnu/libpthread.so.0(+0x8182)[0x7ff37ed5b182]
 
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7ff37e26847d]
 
 
 
Trying to get some variables.
 
Some pointers may be invalid and cause the dump to abort.
 
Query (0x7ff2f8064e2b): ALTER TABLE `table100_int_autoinc` ENABLE KEYS
 
Connection ID (thread ID): 12
 
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=off,table_elimination=on,extended_keys=on,exists_to_in=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
 
----------SERVER LOG END-------------
 
 
 
 
 
 - saving '/opt/buildbot-slave/mariadb/dan_demeter1/build/mysql-test/var/2/log/rpl.rpl_mdev6020-mix,xtradb/' to '/opt/buildbot-slave/mariadb/dan_demeter1/build/mysql-test/var/log/rpl.rpl_mdev6020-mix,xtradb/'
 
 
 
Retrying test rpl.rpl_mdev6020, attempt(2/3)...
 
 
 
worker[2] > Restart  - not started
 
worker[2] > Restart  - not started
 
***Warnings generated in error logs during shutdown after running tests: rpl.rpl_mdev6020
 
 
 
mysqld: /opt/buildbot-slave/mariadb/dan_demeter1/build/sql/mdl.cc:2409: bool MDL_context::acquire_lock(MDL_request*, ulong): Assertion `(mdl_request->type != MDL_INTENTION_EXCLUSIVE && mdl_request->type != MDL_EXCLUSIVE) || !(get_thd()->rgi_slave && get_thd()->rgi_slave->is_parallel_exec && lock->check_if_conflicting_replication_locks(this))' failed.
 
Attempting backtrace. You can use the following information to find out

Comment by Michael Widenius [ 2018-05-17 ]

Comment from Elena: From cross-reference, it looks like that particular failure was happening on the specific builder p8-trusty-bintar [almost?] exclusively, so it stopped happening in early 2017, apparently when that builder was removed or modified. The test was still failing a lot, but on different reasons. Then, suddenly the same failure happened once at the very end of 2017, on kvm-bintar-trusty-amd64, on some development tree, and for now that's all

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