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Posted to dev@knox.apache.org by "Larry McCay (JIRA)" <ji...@apache.org> on 2017/09/12 20:17:00 UTC
[jira] [Comment Edited] (KNOX-1010) Remote Discovery of Knox
Topology Configuration
[ https://issues.apache.org/jira/browse/KNOX-1010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16163574#comment-16163574 ]
Larry McCay edited comment on KNOX-1010 at 9/12/17 8:16 PM:
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[~pzampino] - Who do you see populating the Zookeeper structures with the discovered artifacts?
I can see multiple possibilities here:
1. management UIs and commands themselves would have to know these details and publish to ZK appropriately
2. management UIs and commands can just call the Knox Admin API which would have to be aware of a ZK quorum and publish the details appropriately. Then all UIs and commands get it for free.
#2 makes a lot of sense but we need to consider the fact that multiple instances would potentially be updating the ZK schema for the same change - especially in an Ambari managed world. So multiple writers to ZK and change notifications of the same change being discovered by each Knox instance for each of the instance-driven updates to ZK may cause some unnecessary thrashing.
was (Author: lmccay):
[~pzampino] - Who do you see populating the Zookeeper structures with the discovered artifacts?
> Remote Discovery of Knox Topology Configuration
> -----------------------------------------------
>
> Key: KNOX-1010
> URL: https://issues.apache.org/jira/browse/KNOX-1010
> Project: Apache Knox
> Issue Type: Sub-task
> Components: Server
> Reporter: Phil Zampino
> Labels: kip-8
> Fix For: 0.14.0
>
>
> To support HA deployments, Knox should be able to discover simple topology descriptors and provider configuration remotely.
> - Define the ZooKeeper structure for remote config (simple desc, externalized provider) discovery
> - Determine the best way to interact with ZooKeeper (REST, or some other client binding)
> - Simple descriptor discovery
> - External provider config discovery
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