Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-4185

Galera: Server hangs in terminate_slave_thread attempting to stop traditional slave

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 5.5.29-galera
    • Component/s: None
    • Labels:
      None

      Description

      With the traditional replication setup using the server code from maria-5.5-galera, STOP SLAVE hangs.

      revision-id: seppo.jaakola@codership.com-20130216222240-syypg8kc355qcpsp
      revno: 3380
      branch-nick: maria-5.5-galera

      It seems to be a regression from the previous revision 3379.

      Strack trace from the thread executing STOP SLAVE:

      Thread 3 (Thread 0x7f56b4074700 (LWP 4284)):
      #0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
      #1  0x0000000000cfcb90 in safe_cond_timedwait (cond=0x4111ca8, mp=0x4111b20, abstime=0x7f56b4072780, file=0xd5d950 "maria-5.5-galera/sql/slave.cc", line=661) at maria-5.5-galera/mysys/thr_mutex.c:547
      #2  0x0000000000583788 in inline_mysql_cond_timedwait (that=0x4111ca8, mutex=0x4111b20, abstime=0x7f56b4072780, src_file=0xd5d950 "maria-5.5-galera/sql/slave.cc", src_line=661) at maria-5.5-galera/include/mysql/psi/mysql_thread.h:1018
      #3  0x0000000000584e5e in terminate_slave_thread (thd=0x7f5678001430, term_lock=0x4111b20, term_cond=0x4111ca8, slave_running=0x41124b0, skip_lock=true) at maria-5.5-galera/sql/slave.cc:661
      #4  0x0000000000584840 in terminate_slave_threads (mi=0x410e830, thread_mask=3, skip_lock=true) at maria-5.5-galera/sql/slave.cc:510
      #5  0x00000000006487da in stop_slave (thd=0x4198450, mi=0x410e830, net_report=true) at maria-5.5-galera/sql/sql_repl.cc:1393
      #6  0x000000000061a5fa in mysql_execute_command (thd=0x4198450) at maria-5.5-galera/sql/sql_parse.cc:2986
      #7  0x0000000000624da9 in mysql_parse (thd=0x4198450, rawbuf=0x7f56740063c8 "STOP SLAVE", length=10, parser_state=0x7f56b4073500) at maria-5.5-galera/sql/sql_parse.cc:6304
      #8  0x0000000000623e70 in wsrep_mysql_parse (thd=0x4198450, rawbuf=0x7f56740063c8 "STOP SLAVE", length=10, parser_state=0x7f56b4073500) at maria-5.5-galera/sql/sql_parse.cc:6069
      #9  0x0000000000616335 in dispatch_command (command=COM_QUERY, thd=0x4198450, packet=0x419c131 "STOP SLAVE", packet_length=10) at maria-5.5-galera/sql/sql_parse.cc:1245
      #10 0x0000000000615114 in do_command (thd=0x4198450) at maria-5.5-galera/sql/sql_parse.cc:891
      #11 0x000000000071ddd7 in do_handle_one_connection (thd_arg=0x4198450) at maria-5.5-galera/sql/sql_connect.cc:1291
      #12 0x000000000071d7af in handle_one_connection (arg=0x4198450) at maria-5.5-galera/sql/sql_connect.cc:1199
      #13 0x0000000000ab84c4 in pfs_spawn_thread (arg=0x413e250) at maria-5.5-galera/storage/perfschema/pfs.cc:1015
      #14 0x00007f56c0c99e9a in start_thread (arg=0x7f56b4074700) at pthread_create.c:308
      #15 0x00007f56c03cacbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
      #16 0x0000000000000000 in ?? ()

      All threads stack trace is attached.

      MTR test case:

      --source include/master-slave.inc
      --connection slave
      STOP SLAVE;

        Attachments

          Activity

            People

            Assignee:
            seppo Seppo Jaakola
            Reporter:
            elenst Elena Stepanova
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved:

                Git Integration