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https://issues.apache.org/jira/browse/HBASE-10655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13917714#comment-13917714
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Andrew Purtell commented on HBASE-10655:
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On HBASE-10191, [~mcorgan] suggested the allocator could also do constant small
(sequential) compactions.
We can maintain new metrics on numbers of buffers allocated, stats on arenas,
stats on wastage and internal fragmentation of the buffers, etc, and use these
to guide additional optimizations and refinements.
> ByteBuf-fronted slab allocator for on- and off-heap cellblock storage
> ---------------------------------------------------------------------
>
> Key: HBASE-10655
> URL: https://issues.apache.org/jira/browse/HBASE-10655
> Project: HBase
> Issue Type: Sub-task
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
>
> Our ByteRange interface has some nice properties such as a compareTo method
> using hbase-friendly unsigned byte comparison. This can be backed by either
> on-heap or off-heap byte buffers. Consider an allocator that internally
> allocates huge on or off-heap slabs and hands out ByteRanges over portions of
> those arenas. Keep it as simple as possible, optimized for HBase needs. Can
> be fairly standalone with respect to the rest of the HBase code.
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