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From "Eric Newton (JIRA)" <>
Subject [jira] [Assigned] (ACCUMULO-2480) ha fail-failover failure
Date Tue, 18 Mar 2014 15:44:42 GMT


Eric Newton reassigned ACCUMULO-2480:

    Assignee: Eric Newton

> ha fail-failover failure
> ------------------------
>                 Key: ACCUMULO-2480
>                 URL:
>             Project: Accumulo
>          Issue Type: Bug
>          Components: master, tserver
>         Environment: running continuous ingest on a 74-node HA NN hadoop 2.3 cluster,
>            Reporter: Eric Newton
>            Assignee: Eric Newton
>             Fix For: 1.7.0
> Ran {{service network stop}} on the active NN.  The service failed to switch over since
the fencing script on the standby failed to run (sshfence).
> After the network interface was re-established, the standby took over.
> However, accumulo ingest began to have very long hold times since the standby was not
providing service for several minutes.
> The master attempted to shutdown the tablet servers with hold time.
> The filesystem hook closed the filesystem, and the servers got stuck endlessly trying
to write to the WAL.
> Even after the NN was active, because the filesytem was closed, attempts to get a new
WAL continued to fail.
> * why didn't the tablet servers stop?
> * WAL loop should be able to terminate if they see an IOException that indicates that
the filesystem is closed

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