Return-Path: X-Original-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id CB8C5D3B7 for ; Tue, 7 Aug 2012 23:37:11 +0000 (UTC) Received: (qmail 29531 invoked by uid 500); 7 Aug 2012 23:37:11 -0000 Delivered-To: apmail-hadoop-common-issues-archive@hadoop.apache.org Received: (qmail 29441 invoked by uid 500); 7 Aug 2012 23:37:11 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-issues@hadoop.apache.org Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 29421 invoked by uid 99); 7 Aug 2012 23:37:11 -0000 Received: from issues-vm.apache.org (HELO issues-vm) (140.211.11.160) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 07 Aug 2012 23:37:10 +0000 Received: from isssues-vm.apache.org (localhost [127.0.0.1]) by issues-vm (Postfix) with ESMTP id E6608142856 for ; Tue, 7 Aug 2012 23:37:10 +0000 (UTC) Date: Tue, 7 Aug 2012 23:37:10 +0000 (UTC) From: "Ahmed Radwan (JIRA)" To: common-issues@hadoop.apache.org Message-ID: <1257086264.2000.1344382630945.JavaMail.jiratomcat@issues-vm> In-Reply-To: <1871661239.3542.1318905610648.JavaMail.tomcat@hel.zones.apache.org> Subject: [jira] [Commented] (HADOOP-7754) Expose file descriptors from Hadoop-wrapped local FileSystems MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/HADOOP-7754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13430727#comment-13430727 ] Ahmed Radwan commented on HADOOP-7754: -------------------------------------- One of the new files was missing the license header and docs. Here is an updated versions for both branch-1 and trunk. > Expose file descriptors from Hadoop-wrapped local FileSystems > ------------------------------------------------------------- > > Key: HADOOP-7754 > URL: https://issues.apache.org/jira/browse/HADOOP-7754 > Project: Hadoop Common > Issue Type: Sub-task > Components: native > Affects Versions: 0.23.0 > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Attachments: HADOOP-7754_branch-1_rev2.patch, HADOOP-7754_trunk.patch, HADOOP-7754_trunk_rev2.patch, hadoop-7754-0.23.0-hasfd.txt, hasfd.txt > > > In HADOOP-7714, we determined that using fadvise inside of the MapReduce shuffle can yield very good performance improvements. But many parts of the shuffle are FileSystem-agnostic and thus operate on FSDataInputStreams and RawLocalFileSystems. This JIRA is to figure out how to allow RawLocalFileSystem to expose its FileDescriptor object without unnecessarily polluting the public APIs. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira