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https://issues.apache.org/jira/browse/HBASE-11970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14134143#comment-14134143
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Jimmy Xiang commented on HBASE-11970:
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This is a little confusing. Sorry for that.
It is not "master is configured not to host any region". Instead, it is
something like "master is not configured to host regions if there are other
regionservers". For example, in standalone/pseudo-distributed mode, only one
node is brought up by default, and the master has all regions.
> BlockCache would be instantiated when Master doesn't host regions
> -----------------------------------------------------------------
>
> Key: HBASE-11970
> URL: https://issues.apache.org/jira/browse/HBASE-11970
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.99.0
> Reporter: Ted Yu
>
> HMaster ctor calls HRegionServer ctor which calls CacheConfig ctor where
> CacheConfig.instantiateBlockCache() would create BlockCache.
> This happens even if Master is configured not to host regions.
> This was observed when I tried to answer question from the thread titled:
> 'The default hbase.regionserver.info.port doesn't work'
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