[jira] [Resolved] (SLIDER-91) slider registry code to gracefully handle (transient) ZK outages

["Steve Loughran (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SLIDER-91?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved SLIDER-91.
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    Resolution: Won't Fix

I propose fixing this in YARN-913 by making the service registry entry persistent; (cleanable by YARN), with an ephemeral {{/live}} znode to indicate live, and ephemeral component entries.

the service entry will outlive the AM, but the /live tag will indicate whether or not the service is actually running at this point.

> slider registry code to gracefully handle (transient) ZK outages
> ----------------------------------------------------------------
>
>                 Key: SLIDER-91
>                 URL: https://issues.apache.org/jira/browse/SLIDER-91
>             Project: Slider
>          Issue Type: Sub-task
>          Components: registry
>    Affects Versions: Slider 0.30
>            Reporter: Steve Loughran
>
> Slider registry code needs to handle transient registry failures of running clusters.
> we may want to fail hard on startup, but during normal operation, things shouldn't fail the AM
> # HTTP registry queries
> # any updates to registry status (log? queue?)



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