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https://issues.apache.org/jira/browse/HBASE-18117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16025640#comment-16025640
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Karan Mehta commented on HBASE-18117:
-------------------------------------
The current framework only allows changes on the config parameters that are
accessed only on the server side. If {{ConfigurationObserver}} is implemented
by any of the classes from {{hbase-client}}, this will introduce a cyclic
dependency between hbase-client and hbase-server projects and thus the build
would fail.
> Increase resiliency by allowing more parameters for online config change
> ------------------------------------------------------------------------
>
> Key: HBASE-18117
> URL: https://issues.apache.org/jira/browse/HBASE-18117
> Project: HBase
> Issue Type: Improvement
> Reporter: Karan Mehta
> Assignee: Karan Mehta
>
> HBASE-8544 adds the feature to change config online without having a server
> restart. This JIRA is to work on new parameters for the utilizing that
> feature.
> As [~apurtell] suggested, following are the useful and frequently changing
> parameters in production.
> - RPC limits, timeouts, and other performance relevant settings
> - Replication limits and batch sizes
> - Region carrying limit
> - WAL retention and cleaning parameters
> I will try to make the RPC timeout parameter online as a part of this JIRA.
> If it seems suitable then we can extend it to other params.
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