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  1. MariaDB Server
  2. MDEV-22731

Galera: RQG: Assertion `trx_map_.size() == 0' failed in Wsdb on master node shutting down

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    Details

    • Type: Bug
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 10.2.32, 10.3.24
    • Fix Version/s: 10.2, 10.3
    • Component/s: Galera
    • Labels:
    • Environment:
      Galera 25.3.29(rb0f34b0) debug build; CentOS 7.

      Description

      Master node crashes with signal 6 and assertion `trx_map_.size() == 0' failed in Wsdb on master node shutting down using RQG. It is reproduced on 10.2/10.3 CS/ES.

      Maybe, it is related to MDEV-21459 and MDEV-20914 since they have the same assertion.

      RQG: Repository: MariaDB/randgen; master branch; Revision a11a5f60eff28214edd90b6994fd6c85e76ea256, used galera_stress.yy and galera_stress.zz.

      Run:

      perl ./runall-new.pl --grammar=conf/galera/galera_stress.yy --gendata=conf/galera/galera_stress.zz --duration=3600 --queries=200M --threads=8 --galera=mss --basedir=/home/stepan/mariadb/10.3 --vardir=/home/stepan/rqg/var "--mysqld=--wsrep-provider=/usr/lib/libgalera_smm_3.so" "--mysqld=--wsrep_sst_method=rsync" "--mysqld=--core" "--mysqld=--general-log" "--mysqld=--general-log-file=queries.log" "--mysqld=--log-output=file" "--mysqld=--wsrep-debug=none" "--mysqld=--wsrep-sync-wait=15" "--mysqld=--wsrep_retry_autocommit=0" "--mysqld=--wsrep_log_conflicts=1" "--mysqld=--wsrep_on=ON" "--mysqld=--default-storage-engine=innodb" "--mysqld=--sort_buffer_size=200M" "--mysqld=--innodb-autoinc-lock-mode=2" "--mysqld=--innodb-lock-wait-timeout=3"
      

      Master node 0 server log:

      10.3.24, 7476e8c7cdd73d60294126a2840baee97e7644b6, debug build

      2020-05-26 13:34:14 0 [Note] WSREP: MemPool(LocalTrxHandle): hit ratio: 0.95857, misses: 5242, in use: 5109, in pool: 133
      2020-05-26 13:34:14 0 [Note] WSREP: trx map:
      7521 source: cf6d13ca-9f33-11ea-9bf2-1a7971187bca version: 4 local: 1 state: EXECUTING flags: 0 conn_id: -1 trx_id: 7521 seqnos (l: -1, g: -1, s: -1, d: -1, ts: 1590485833921506963)
      217998 source: cf6d13ca-9f33-11ea-9bf2-1a7971187bca version: 4 local: 1 state: EXECUTING flags: 0 conn_id: -1 trx_id: 217998 seqnos (l: -1, g: -1, s: -1, d: -1, ts: 1590487397827572818)
      338271 source: cf6d13ca-9f33-11ea-9bf2-1a7971187bca version: 4 local: 1 state: EXECUTING flags: 0 conn_id: -1 trx_id: 338271 seqnos (l: -1, g: -1, s: -1, d: -1, ts: 1590488300661635019)
      112761 source: cf6d13ca-9f33-11ea-9bf2-1a7971187bca version: 4 local: 1 state: EXECUTING flags: 0 conn_id: -1 trx_id: 112761 seqnos (l: -1, g: -1, s: -1, d: -1, ts: 1590486634320976387)
      7527 source: cf6d13ca-9f33-11ea-9bf2-1a7971187bca version: 4 local: 1 state: EXECUTING flags: 0 conn_id: -1 trx_id: 7527 seqnos (l: -1, g: -1, s: -1, d: -1, ts: 1590485833911239520)
      375863 source: cf6d13ca-9f33-11ea-9bf2-1a7971187bca version: 4 local: 1 state: EXECUT
      mysqld: galera/src/wsdb.cpp:54: galera::Wsdb::~Wsdb(): Assertion `trx_map_.size() == 0' failed.
      200526 13:34:14 [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: 10.3.24-MariaDB-debug-log
      key_buffer_size=134217728
      read_buffer_size=131072
      max_used_connections=9
      max_threads=153
      thread_count=0
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 31488565 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x0
      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 = 0x0 thread_stack 0x49000
      /home/stepan/mariadb/10.3/sql/mysqld(my_print_stacktrace+0x40)[0x5637b19128a4]
      mysys/stacktrace.c:269(my_print_stacktrace)[0x5637b109f6d7]
      sigaction.c:0(__restore_rt)[0x7f81e3cef5d0]
      :0(__GI_raise)[0x7f81e1fdd207]
      :0(__GI_abort)[0x7f81e1fde8f8]
      :0(__assert_fail_base)[0x7f81e1fd6026]
      :0(__GI___assert_fail)[0x7f81e1fd60d2]
      src/wsdb.cpp:54(galera::Wsdb::~Wsdb())[0x7f81dfe59689]
      src/replicator_smm.cpp:259(galera::ReplicatorSMM::~ReplicatorSMM())[0x7f81dfe85dec]
      src/replicator_smm.cpp:279(galera::ReplicatorSMM::~ReplicatorSMM())[0x7f81dfe860d9]
      src/wsrep_provider.cpp:104(galera_tear_down)[0x7f81dfe9288b]
      wsrep/wsrep_loader.c:221(wsrep_unload)[0x5637b19a5ec8]
      sql/wsrep_mysqld.cc:878(wsrep_deinit(bool))[0x5637b0fb08d4]
      sql/mysqld.cc:2039(kill_server(void*))[0x5637b0c48f53]
      sql/mysqld.cc:2068(kill_server_thread)[0x5637b0c48fb6]
      pthread_create.c:0(start_thread)[0x7f81e3ce7dd5]
      /lib64/libc.so.6(clone+0x6d)[0x7f81e20a4ead]
      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 /home/stepan/rqg/var/node0/data
      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             4096                 23005                processes 
      Max open files            1024                 4096                 files     
      Max locked memory         65536                65536                bytes     
      Max address space         unlimited            unlimited            bytes     
      Max file locks            unlimited            unlimited            locks     
      Max pending signals       23005                23005                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/libexec/abrt-hook-ccpp %s %c %p %u %g %t e %P %I %h
      

      All server logs and RQG output.

        Attachments

        1. 200526_RQG_crash_10.3.zip
          19 kB
        2. galera_stress.yy
          3 kB
        3. galera_stress.zz
          1 kB
        4. mysql0_200526_10.3.err
          25 kB

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              Assignee:
              seppo Seppo Jaakola
              Reporter:
              stepan.patryshev Stepan Patryshev
              Votes:
              1 Vote for this issue
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                Dates

                Created:
                Updated: