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https://issues.apache.org/jira/browse/HBASE-11351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14031769#comment-14031769
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Lars Hofhansl commented on HBASE-11351:
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Hmm... Doesn't work quite yet. I must have broken something playing around.
Stay tuned.
> Experiments with OffHeap memstores
> ----------------------------------
>
> Key: HBASE-11351
> URL: https://issues.apache.org/jira/browse/HBASE-11351
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Attachments: 11351-0.94.txt
>
>
> I have been experimenting with offheap memstores using an offheap BTree
> implementation of ConcurrentMap provided by MapDB (www.mapdb.org)
> So far I hooked this up in an experimental way with inefficient serialization
> (in the sense that due to our special usage of the set api we need to back
> the set by a map, which in the off heap case means we need to serialize and
> store the value twice. It is used as key and value). But it works.
> It's quite a bit slower and due to need to deserialize upon scan it produces
> *more* short term garbage.
> Let's use this issue to discuss.
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