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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4482) Race Condition Concerning Eviction in SlabCache
Date Mon, 03 Oct 2011 21:43:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13119649#comment-13119649
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Todd Lipcon commented on HBASE-4482:
------------------------------------

I was thinking about this a bit over the weekend. Though the current composition of SingleSizeCaches
into SlabCache is pretty, it's causing a lot of these bugs regarding coordination between
the two.

I'd like to consider a simplification here - what if we got rid of SingleSizeCache, and manually
kept the LRU lists per size? Basically, dial back the concurrency a bit in favor of a simpler
design, then if we see bottlenecks or lock contention, we can address it.
                
> Race Condition Concerning Eviction in SlabCache
> -----------------------------------------------
>
>                 Key: HBASE-4482
>                 URL: https://issues.apache.org/jira/browse/HBASE-4482
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Li Pi
>            Assignee: Li Pi
>            Priority: Critical
>             Fix For: 0.92.0
>
>         Attachments: hbase-4482v1.txt, hbase-4482v2.txt
>
>


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