Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-21686

Server with full disk hangs on SHOW SLAVE STATUS

    XMLWordPrintable

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Not a Bug
    • None
    • N/A
    • Galera
    • None

    Description

      This issue occurred due to disk being full on the slave side. Please decide for yourself if it is needed to fix this.

      I am in a migration process, with a cluster replicating from another cluster using asynchronous replication. I have this configuration on the slave side:

      replicate_rewrite_db=app->app_prd
      replicate_do_db=app_prd
      server_id=0 # (this produces a warning in the error log, server rewrites it to 1)
      server_audit=FORCE_PLUS_PERMANENT
      server_audit_logging = OFF
      server_audit_events=connect,query_ddl,query_dml,query_dcl
      server_audit_output_type = syslog
      

      The PROCESSLIST of the server shows this:

      MariaDB [(none)]> show processlist;
      +------+-------------+-----------------+-----------+-----------+-------+----------------------------------------+-------------------+----------+
      | Id   | User        | Host            | db        | Command   | Time  | State                                  | Info              | Progress |
      +------+-------------+-----------------+-----------+-----------+-------+----------------------------------------+-------------------+----------+
      |    1 | system user |                 | NULL      | Sleep     | 19599 | Committed 61092                        | NULL              |    0.000 |
      |    2 | system user |                 | NULL      | Sleep     | 51649 | WSREP aborter idle                     | NULL              |    0.000 |
      |    3 | system user |                 | NULL      | Daemon    |  NULL | InnoDB purge worker                    | NULL              |    0.000 |
      |    4 | system user |                 | NULL      | Daemon    |  NULL | InnoDB purge worker                    | NULL              |    0.000 |
      |    5 | system user |                 | NULL      | Daemon    |  NULL | InnoDB purge worker                    | NULL              |    0.000 |
      |    6 | system user |                 | NULL      | Daemon    |  NULL | InnoDB purge coordinator               | NULL              |    0.000 |
      |    7 | system user |                 | NULL      | Daemon    |  NULL | InnoDB shutdown handler                | NULL              |    0.000 |
      |   11 | system user |                 | NULL      | Sleep     | 51648 | wsrep applier idle                     | NULL              |    0.000 |
      |   12 | system user |                 | NULL      | Sleep     | 19599 | Committed 61091                        | NULL              |    0.000 |
      |   13 | system user |                 | NULL      | Sleep     | 51648 | wsrep applier idle                     | NULL              |    0.000 |
      |  483 | monitor     | 10.4.0.18:32790 | NULL      | Sleep     |     1 |                                        | NULL              |    0.000 |
      |  484 | monitor     | 10.4.0.13:57144 | NULL      | Sleep     |     3 |                                        | NULL              |    0.000 |
      |  500 | monitor     | 10.4.0.7:45908  | NULL      | Sleep     |     3 |                                        | NULL              |    0.000 |
      | 2583 | root        | localhost       | regus_prd | Killed    |   707 | Init                                   | show slave status |    0.000 |
      | 2590 | system user |                 | NULL      | Slave_IO  |   841 | Queueing master event to the relay log | NULL              |    0.000 |
      | 2591 | system user |                 | NULL      | Slave_SQL |   733 | Closing tables                         | NULL              |    0.000 |
      | 2605 | root        | localhost       | NULL      | Killed    |   620 | Init                                   | show slave status |    0.000 |
      | 2608 | root        | localhost       | NULL      | Query     |     0 | Init                                   | show processlist  |    0.000 |
      +------+-------------+-----------------+-----------+-----------+-------+----------------------------------------+-------------------+----------+
      18 rows in set (0.000 sec)
      

      The InnoDB status shows this:

      ------------
      TRANSACTIONS
      ------------
      Trx id counter 2835757
      Purge done for trx's n:o < 2835757 undo n:o < 0 state: running but idle
      History list length 40
      LIST OF TRANSACTIONS FOR EACH SESSION:
      ---TRANSACTION 421687012229744, not started
      0 lock struct(s), heap size 1136, 0 row lock(s)
      ---TRANSACTION 421687012225528, not started
      0 lock struct(s), heap size 1136, 0 row lock(s)
      ---TRANSACTION 421687012221312, not started
      0 lock struct(s), heap size 1136, 0 row lock(s)
      ---TRANSACTION 2835752, ACTIVE (PREPARED) 808 sec
      4 lock struct(s), heap size 1136, 2 row lock(s), undo log entries 3
      MySQL thread id 2591, OS thread handle 140209058854656, query id 114359 Closing tables
      ---TRANSACTION 421687012212880, not started
      0 lock struct(s), heap size 1136, 0 row lock(s)
      

      The other galera nodes have no hanging of transactions.

      Attachments

        Activity

          People

            janlindstrom Jan Lindström
            michaeldg Michaël de groot
            Votes:
            1 Vote for this issue
            Watchers:
            3 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Git Integration

                Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.