[jira] [Updated] (KNOX-1423) Document Zookeeper URL Manager behaviour for HA services

["Kevin Risden (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KNOX-1423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevin Risden updated KNOX-1423:
-------------------------------
    Fix Version/s:     (was: 1.4.0)
                   1.5.0

> Document Zookeeper URL Manager behaviour for HA services
> --------------------------------------------------------
>
>                 Key: KNOX-1423
>                 URL: https://issues.apache.org/jira/browse/KNOX-1423
>             Project: Apache Knox
>          Issue Type: Bug
>          Components: Site
>            Reporter: Sandeep More
>            Assignee: Sandeep More
>            Priority: Major
>             Fix For: 1.5.0
>
>
> For services that use Zookeeper based HA there is no documentation about how the failover scenario works.
> The failover code is a simple round-robin. All URLs are tried once on failover. When the list is exhausted the entire list of URLs is re-fetched from Zookeeper and the new list is tried again the same way (if the configured number of failover attempts has not been reached).
> Upon failure, the url is marked failed and next is tried and used until it fails. 
>  
> This needs to be explicitly documented for clear understanding of HA workings.



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