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https://issues.apache.org/jira/browse/HBASE-17353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ramkrishna.s.vasudevan updated HBASE-17353:
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Status: Patch Available (was: Open)
> Cache famLen in OffheapKeyValue
> -------------------------------
>
> Key: HBASE-17353
> URL: https://issues.apache.org/jira/browse/HBASE-17353
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 2.0.0
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: HBASE-17353.patch, OffheapKV famLen cost.png
>
>
> WE need to discuss here. Already we had a TODO here. But this comes again
> after offheap memstore is committed in trunk.
> Attaching a screenshot to show the impact. True that these changes won't have
> a direct impact on the final perf but at micro level they would have.
> In case of KeyValue it is just retrieving a byte from the byte[] (o(1)
> access).
> But here we need to access the memory to retrive that one byte though it is
> Unsafe based.
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