Return-Path: Delivered-To: apmail-hadoop-mapreduce-dev-archive@minotaur.apache.org Received: (qmail 43549 invoked from network); 12 Nov 2010 21:46:03 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 12 Nov 2010 21:46:03 -0000 Received: (qmail 26437 invoked by uid 500); 12 Nov 2010 21:46:34 -0000 Delivered-To: apmail-hadoop-mapreduce-dev-archive@hadoop.apache.org Received: (qmail 26365 invoked by uid 500); 12 Nov 2010 21:46:34 -0000 Mailing-List: contact mapreduce-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-dev@hadoop.apache.org Delivered-To: mailing list mapreduce-dev@hadoop.apache.org Received: (qmail 26357 invoked by uid 99); 12 Nov 2010 21:46:34 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 12 Nov 2010 21:46:34 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.22] (HELO thor.apache.org) (140.211.11.22) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 12 Nov 2010 21:46:34 +0000 Received: from thor (localhost [127.0.0.1]) by thor.apache.org (8.13.8+Sun/8.13.8) with ESMTP id oACLkD20016121 for ; Fri, 12 Nov 2010 21:46:13 GMT Message-ID: <13622551.52631289598373524.JavaMail.jira@thor> Date: Fri, 12 Nov 2010 16:46:13 -0500 (EST) From: "Ramkumar Vadali (JIRA)" To: mapreduce-dev@hadoop.apache.org Subject: [jira] Created: (MAPREDUCE-2186) DistributedRaidFileSystem should implement getFileBlockLocations() MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 DistributedRaidFileSystem should implement getFileBlockLocations() ------------------------------------------------------------------ Key: MAPREDUCE-2186 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2186 Project: Hadoop Map/Reduce Issue Type: Improvement Components: contrib/raid Reporter: Ramkumar Vadali Assignee: Ramkumar Vadali If a RAIDed file has missing blocks, DistributedRaidFileSystem.getFileBlockLocations() would return no block locations. This could lead a client to believe that the file is not readable. But if parity data is available, the file actually is readable. It would be better to implement getFileBlockLocations() and return the location of the parity blocks that would be needed to reconstruct the missing block. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.