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https://issues.apache.org/jira/browse/HBASE-28489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17834814#comment-17834814
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Istvan Toth commented on HBASE-28489:
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Which means that default/BASIC auth cannot be used with HA/LB now.
> Implement HTTP session support in REST server and client
> --------------------------------------------------------
>
> Key: HBASE-28489
> URL: https://issues.apache.org/jira/browse/HBASE-28489
> Project: HBase
> Issue Type: Improvement
> Components: REST
> Reporter: Istvan Toth
> Assignee: Istvan Toth
> Priority: Major
>
> The REST server (and java client) currently does not implement sessions.
> While is not necessary for the REST API to work, implementing sessions would
> be a big improvement in throughput and resource usage.
> * It would make load balancing with sticky sessions possible
> * It would save the overhead of performing authentication for each request
> The gains are particularly big when using SPENGO:
> * The full SPENGO handshake can be skipped for subsequent requests
> * When Knox performs SPENGO authentication for the proxied client, it access
> the identity store each time. When the session is set, this step is only
> perfomed on the initial request.
> The same change has resulted in spectacular performance improvements for
> Phoenix Query Server when implemented in Avatica.
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