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  1. MariaDB MaxScale
  2. MXS-1382

Use wsrep_sync_wait to detect replication lag in Galera clusters

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    Details

    • Type: New Feature
    • Status: Open (View Workflow)
    • Priority: Trivial
    • Resolution: Unresolved
    • Affects Version/s: 2.5
    • Fix Version/s: 2.6
    • Component/s: galeramon
    • Labels:

      Description

      The Galera monitor can detect the lag between certification and application of events in a Galera cluster by writing an event on the write-master node and doing "dirty reads" on the nodes labeled as slaves. This gives similar functionality for Galera clusters that is already in place for Master-Slave clusters in mysqlmon.

      Another option is to use wsrep_local_recv_queue as a measurement of lag in a Galera cluster.

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            Assignee:
            toddstoffel Todd Stoffel
            Reporter:
            markus makela markus makela
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              Created:
              Updated: