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Date: Sun, 6 Nov 2011 04:04:51 +0000 (UTC)
From: "Benoit Sigoure (Updated) (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (HBASE-4752) Don't create an unnecessary
 LinkedList when evicting from the BlockCache
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     [ https://issues.apache.org/jira/browse/HBASE-4752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benoit Sigoure updated HBASE-4752:
----------------------------------

    Status: Patch Available  (was: Open)
    
> Don't create an unnecessary LinkedList when evicting from the BlockCache
> ------------------------------------------------------------------------
>
>                 Key: HBASE-4752
>                 URL: https://issues.apache.org/jira/browse/HBASE-4752
>             Project: HBase
>          Issue Type: Improvement
>          Components: performance, regionserver
>    Affects Versions: 0.90.4
>            Reporter: Benoit Sigoure
>            Assignee: Benoit Sigoure
>            Priority: Minor
>         Attachments: 0001-HBASE-4752-Don-t-create-an-unnecessary-LinkedList-wh.patch
>
>
> When evicting from the BlockCache, the code creates a LinkedList containing every single block sorted by access time.  This list is created from a PriorityQueue.  I don't believe it is necessary, as the PriorityQueue can be used directly.

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