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https://issues.apache.org/jira/browse/SENTRY-1593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15951294#comment-15951294
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kalyan kumar kalvagadda commented on SENTRY-1593:
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At a high level the change set submitted does following.
1. Extends the capability of sentry name-node client and generic policy client
to connect to multiple servers and failover to the server that is available
2. Transport handling of the clients is abstracted to another class so that the
client's just have to extend the class that abstracts it. Implementations of
the clients don't have to worry about it.
3. Changed the behavior of the clients so that they connect to one of the
configured servers when the client is actually instantiated.
> Implement client failover for Generic and NN clients
> ----------------------------------------------------
>
> Key: SENTRY-1593
> URL: https://issues.apache.org/jira/browse/SENTRY-1593
> Project: Sentry
> Issue Type: Sub-task
> Components: Sentry
> Affects Versions: sentry-ha-redesign
> Reporter: Alexander Kolbasov
> Assignee: kalyan kumar kalvagadda
> Labels: HA
> Fix For: sentry-ha-redesign
>
> Attachments: old_service_client_class_diagram.png,
> SENTRY-1593.001-sentry-ha-redesign.patch,
> SENTRY-1593.002-sentry-ha-redesign.patch,
> SENTRY-1593.003-sentry-ha-redesign.patch,
> SENTRY-1593.004-sentry-ha-redesign.patch,
> SENTRY-1593.005-sentry-ha-redesign.patch, service_client_class_diagram.png
>
>
> We need to have client failover logic for Generic service clients and Name
> Node clients. Currently only db policy clients have it implemented.
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