[jira] [Resolved] (HBASE-29249) Allow for BlockCache implementations to define dynamic properties

["Wellington Chevreuil (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-29249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wellington Chevreuil resolved HBASE-29249.
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    Resolution: Fixed

Merged to master, branch-3, branch-2 and branch-2.6. Thanks for the reviews [~zhangduo] and [~taklwu] !

> Allow for BlockCache implementations to define dynamic properties
> -----------------------------------------------------------------
>
>                 Key: HBASE-29249
>                 URL: https://issues.apache.org/jira/browse/HBASE-29249
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 3.0.0-beta-1, 4.0.0-alpha-1, 2.7.0, 2.6.2
>            Reporter: Wellington Chevreuil
>            Assignee: Wellington Chevreuil
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.0.0, 4.0.0-alpha-1, 2.7.0, 2.6.3
>
>
> We have some customers use case finding useful to have some of the BucketCache configurations dynamically set, such as the accept factor or the queue addition wait time. 
> HBASE-28517 has already made some other cache related properties dynamically configurable, and CacheConfig already implements the 
> ConfigurationObserver and registers itself for config changes notifications. Since CacheConfig holds a reference for the BlockCache implementation, we could just allow for BlockCache implementation to define their own dynamic configuration logic by define a refreshConfig method in the BlockCache interface that would get called from CacheConfig.onConfigurationChange().
>  
>  



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