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Date: Sat, 27 Oct 2012 04:29:15 +0000 (UTC)
From: "Lars Hofhansl (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
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In-Reply-To: <357752762.62506.1350540964857.JavaMail.jiratomcat@arcas>
Subject: [jira] [Updated] (HBASE-7008) Set scanner caching to a better
 default
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     [ https://issues.apache.org/jira/browse/HBASE-7008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl updated HBASE-7008:
---------------------------------

    Release Note: 
This patch increases the default scanner caching to 100.
It also enables tcpNoDelay by default (i.e. disabled Nagle's algorithm).

This will generally lead to better performance, but in some situation may lead to different network patterns and increase memory consumption on both the client and the server.

How's this for a release note?
                
> Set scanner caching to a better default
> ---------------------------------------
>
>                 Key: HBASE-7008
>                 URL: https://issues.apache.org/jira/browse/HBASE-7008
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>            Reporter: liang xie
>            Assignee: liang xie
>             Fix For: 0.94.3, 0.96.0
>
>         Attachments: 7008-0.94.txt, 7008-0.94-v2.txt, 7008-0.94-v3.txt, 7008-trunk-v5.txt, 7008-trunk-v6.txt, 7008-v3.txt, 7008-v4.txt, HBASE-7008.patch, HBASE-7008-v2.patch
>
>
> per http://search-hadoop.com/m/qaRu9iM2f02/Set+scanner+caching+to+a+better+default%253F&subj=Set+scanner+caching+to+a+better+default+
> let's set to 100 by default

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