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  1. MariaDB Server
  2. MDEV-20276

MariaDB-Galera 10.3 -> 10.4 | Startup time problem (hangs)

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      Description

      We've upgraded from MariaDB 10.3 to the latest version of 10.4 (10.4.7). Once the upgrade has been completed we noticed some strange behavior during cluster-initialisation. No matter which node of our 7-node-cluster we start, it takes approx 8 minutes to get the node into the cluster, each time. Another test-cluster of ours has also inreased joining and sync times, but i'll stick to our production cluster here.

      The first time a "hung up" occurs is at the following point (see attached log):

      Aug 7 12:59:36 MariaDB-PROD-001 mysqld: 2019-08-07 12:59:36 2 [Note] WSREP: ####### drain monitors upto -1

      Getting past this point takes 4 minutes and 33 seconds (273 seconds)

      The second time during the join-phase the problem occurs here:

      Aug 7 13:04:10 MariaDB-PROD-001 mysqld: 2019-08-07 13:04:10 0 [Note] WSREP: ####### drain monitors upto 0
      Aug 7 13:04:10 MariaDB-PROD-001 systemd: Started MariaDB 10.4.7 database server.
      Aug 7 13:04:12 MariaDB-PROD-001 mysqld: 2019-08-07 13:04:12 0 [Note] InnoDB: Buffer pool(s) load completed at 190807 13:04:12
      Aug 7 13:08:43 MariaDB-PROD-001 mysqld: 2019-08-07 13:08:43 0 [Note] WSREP: REPL Protocols: 10 (5, 3)

      This one took 4 minutes and 31 seconds (271 seconds), nearly exactly like the other one before o_Ô. So this might be something to work keep an eye on?!

      Same problems apply to all and every of our 7 node Cluster, also our 2nd cluster is affected.

      Regards

        Attachments

        1. Galera_Cluster_10.4_node_restart.log
          56 kB
        2. messages
          1.39 MB
        3. sql.txt
          19 kB

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            • Assignee:
              jplindst Jan Lindström
              Reporter:
              fstrankowskiwt Florian Strankowski
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              • Created:
                Updated: