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https://issues.apache.org/jira/browse/HBASE-11696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14089494#comment-14089494
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stack commented on HBASE-11696:
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On CBC, L1 is META blocks only. I could imagine it running a while and then
ergonomics asking its usage is and then shrinking down the L1 so it was the
size of the META block cache only. It could check back on occasion to see if
evictions. If so, size up the L1 until evictions go to zero again.
This would be sweet.
> Make CombinedBlockCache resizable.
> ----------------------------------
>
> Key: HBASE-11696
> URL: https://issues.apache.org/jira/browse/HBASE-11696
> Project: HBase
> Issue Type: Improvement
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Fix For: 2.0.0
>
>
> HBASE-5349 adds auto tuning of memstore heap and block cache heap. Block
> cache needs to be resizable in order for this. CombinedBlockCache is not
> marked resizable now. We can make this. On resize the L1 cache (ie. LRU
> cache) can get resized.
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