[
https://issues.apache.org/jira/browse/HBASE-4027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068544#comment-13068544
]
Todd Lipcon commented on HBASE-4027:
------------------------------------
In my opinion we need a servlet or jamon page which can dump the stats of the
various slab classes as well as their hit/miss rates.
Alternatively, a new MetricsContext for the slab info.
But, somehow, we need to expose information similar to memcached's "stats
items" and "stats slabs"
> Enable direct byte buffers LruBlockCache
> ----------------------------------------
>
> Key: HBASE-4027
> URL: https://issues.apache.org/jira/browse/HBASE-4027
> Project: HBase
> Issue Type: Improvement
> Reporter: Jason Rutherglen
> Assignee: Li Pi
> Priority: Minor
> Attachments: slabcachepatch.diff, slabcachepatchv2.diff,
> slabcachepatchv3.1.diff, slabcachepatchv3.2.diff, slabcachepatchv3.diff
>
>
> Java offers the creation of direct byte buffers which are allocated outside
> of the heap.
> They need to be manually free'd, which can be accomplished using an
> documented {{clean}} method.
> The feature will be optional. After implementing, we can benchmark for
> differences in speed and garbage collection observances.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
