Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: hdfs-issues@hadoop.apache.org
Date: Tue, 30 Aug 2011 07:24:38 +0000 (UTC)
From: "Tsz Wo (Nicholas), SZE (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: 
 <522596544.6390.1314689078979.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Updated] (HDFS-962) Make DFSOutputStream MAX_PACKETS
 configurable
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


     [ https://issues.apache.org/jira/browse/HDFS-962?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo (Nicholas), SZE updated HDFS-962:
----------------------------------------

    Assignee: Justin Joseph

> Make DFSOutputStream MAX_PACKETS configurable
> ---------------------------------------------
>
>                 Key: HDFS-962
>                 URL: https://issues.apache.org/jira/browse/HDFS-962
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs client
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Justin Joseph
>            Priority: Minor
>         Attachments: HDFS-962.patch
>
>
> HDFS-959 suggests that the MAX_PACKETS variable (which determines how many outstanding data packets the DFSOutputStream will permit) may have an impact on performance. If so, we should make it configurable to trade off between memory and performance. I think it ought to be a secret/undocumented config for now - this will make it easier to benchmark without confusing users.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira