Return-Path: Delivered-To: apmail-lucene-hadoop-dev-archive@locus.apache.org Received: (qmail 1943 invoked from network); 10 Apr 2006 02:56:22 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (209.237.227.199) by minotaur.apache.org with SMTP; 10 Apr 2006 02:56:22 -0000 Received: (qmail 89973 invoked by uid 500); 10 Apr 2006 02:56:22 -0000 Delivered-To: apmail-lucene-hadoop-dev-archive@lucene.apache.org Received: (qmail 89948 invoked by uid 500); 10 Apr 2006 02:56:21 -0000 Mailing-List: contact hadoop-dev-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hadoop-dev@lucene.apache.org Delivered-To: mailing list hadoop-dev@lucene.apache.org Received: (qmail 89939 invoked by uid 99); 10 Apr 2006 02:56:21 -0000 Received: from asf.osuosl.org (HELO asf.osuosl.org) (140.211.166.49) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 09 Apr 2006 19:56:21 -0700 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests= X-Spam-Check-By: apache.org Received: from [192.87.106.226] (HELO ajax.apache.org) (192.87.106.226) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 09 Apr 2006 19:56:21 -0700 Received: from ajax (localhost.localdomain [127.0.0.1]) by ajax.apache.org (Postfix) with ESMTP id 2018BD4A00 for ; Mon, 10 Apr 2006 03:56:00 +0100 (BST) Message-ID: <973379996.1144637760128.JavaMail.jira@ajax> Date: Mon, 10 Apr 2006 03:56:00 +0100 (BST) From: "Doug Cutting (JIRA)" To: hadoop-dev@lucene.apache.org Subject: [jira] Commented: (HADOOP-51) per-file replication counts In-Reply-To: <1529480135.1140561049677.JavaMail.jira@ajax.apache.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org X-Spam-Rating: minotaur.apache.org 1.6.2 0/1000/N [ http://issues.apache.org/jira/browse/HADOOP-51?page=comments#action_12373803 ] Doug Cutting commented on HADOOP-51: ------------------------------------ > the idiom of conf.getType("config.value",defaultValue) is good for user-defined values, but shouldn't the default be skipped for things that are defined in hadoop-default.xml, in general? The value from hadoop-default.xml is used in preference to the defaultValue paramter. The paramter is only used as a last resort when no value is found in hadoop-default.xml or any other config file. > per-file replication counts > --------------------------- > > Key: HADOOP-51 > URL: http://issues.apache.org/jira/browse/HADOOP-51 > Project: Hadoop > Type: New Feature > Components: dfs > Versions: 0.2 > Reporter: Doug Cutting > Assignee: Konstantin Shvachko > Fix For: 0.2 > Attachments: Replication.patch > > It should be possible to specify different replication counts for different files. Perhaps an option when creating a new file should be the desired replication count. MapReduce should take advantage of this feature so that job.xml and job.jar files, which are frequently accessed by lots of machines, are more highly replicated than large data files. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira