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https://issues.apache.org/jira/browse/HBASE-27551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wellington Chevreuil resolved HBASE-27551.
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Resolution: Fixed
Merged into master and branch-2. Thanks for reviewing it [~zhangduo][~swu]!
> Add config options to delay assignment to retain last region location
> ---------------------------------------------------------------------
>
> Key: HBASE-27551
> URL: https://issues.apache.org/jira/browse/HBASE-27551
> Project: HBase
> Issue Type: Improvement
> Reporter: Wellington Chevreuil
> Assignee: Wellington Chevreuil
> Priority: Major
> Fix For: 2.6.0, 3.0.0-alpha-4
>
>
> HBASE-27313 introduced the ability to persist the list of files cached in a
> given RS, but temporary RSes loss or restarts would cause regions to be
> eagerly reassigned on other RSes, making the persisted cache useless. For
> some use cases, such as when using ObjectStores based persistence,
> performance degradation caused by cache misses have a worse impact than
> temporary region unavailability.
> This proposes and additional config property (disabled by default) to
> forcibly wait the TRSP for a configurable time while checking for the
> previous RS holding region to get back online, before proceeding with the
> region assignment.
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