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https://issues.apache.org/jira/browse/HBASE-21514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16699915#comment-16699915
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Anoop Sam John commented on HBASE-21514:
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When we have a test Mini cluster with 1+ RSs, ideally every RS instance should
have its own single instance of Block Cache. But right now what happens is
every RS in mini cluster will share one BC because the BC is kept as Static
instance in CacheConfig and Minicluster is on single JVM. As said above
CacheConfig should have config and other related stuff alone. The BC instance
should be some thing kept at HRS level and instance level single object.
Similar issue might be there with MSLAB pool and chunks also. After this is
been fixed, we will reactor that area also.
> Refactor CacheConfig
> --------------------
>
> Key: HBASE-21514
> URL: https://issues.apache.org/jira/browse/HBASE-21514
> Project: HBase
> Issue Type: Improvement
> Reporter: Guanghao Zhang
> Assignee: Guanghao Zhang
> Priority: Major
>
> One basic idea is move the global cache instances from CacheConfig. Only keep
> config stuff in CacheConfig.
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