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https://issues.apache.org/jira/browse/MESOS-409?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Mahler reassigned MESOS-409:
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Assignee: Benjamin Mahler
> Master detector code should stat nodes before attempting to create
> ------------------------------------------------------------------
>
> Key: MESOS-409
> URL: https://issues.apache.org/jira/browse/MESOS-409
> Project: Mesos
> Issue Type: Improvement
> Components: slave
> Reporter: Bill Farner
> Assignee: Benjamin Mahler
> Priority: Minor
>
> The master detector code currently recursively walks the permanent node path
> (e.g. /home/mesos/cluster), attempting to create /home, then /home/mesos,
> then /home/mesos/cluster; trapping NoAuth and NodeExists errors along the way.
> A simple performance improvement would be to perform a stat on the full
> permanent path and skip the recursive creation if it exists. Alternatively,
> it seems practical to forego node creation by the slave altogether, and have
> the slave commit suicide if the permanent node is not present.
> The current behavior results in reams of zookeeper server logging when there
> is a master failover, as user errors are logged by default (which we'd prefer
> to retain). I'm not sure what the performance impact this has on ZooKeeper,
> but it's non-zero and a fix seems trivial.
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