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https://issues.apache.org/jira/browse/HBASE-21290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16650397#comment-16650397
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stack commented on HBASE-21290:
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+1 for branch-2.0. Thank you [~zghaobac] for the ping.
> No need to instantiate BlockCache for master which not carry table
> ------------------------------------------------------------------
>
> Key: HBASE-21290
> URL: https://issues.apache.org/jira/browse/HBASE-21290
> Project: HBase
> Issue Type: Improvement
> Reporter: Guanghao Zhang
> Assignee: Guanghao Zhang
> Priority: Major
> Fix For: 3.0.0, 2.2.0, 2.1.1
>
> Attachments: HBASE-21290.master.001.patch,
> HBASE-21290.master.002.patch, HBASE-21290.master.003.patch,
> HBASE-21290.master.004.patch
>
>
> In our production clusters, we use different jvm config for
> master/regionserver but use same hbase-site.xml for master/regionserver. And
> master has a small heap/offheap config. So the regionserver's
> hbase.bucketcache.size is not suitable for master. I thought we don't need to
> instantiate BlockCache for master which not carry table.
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