Return-Path: X-Original-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-hdfs-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 875E9910C for ; Thu, 2 Aug 2012 17:52:03 +0000 (UTC) Received: (qmail 66053 invoked by uid 500); 2 Aug 2012 17:52:03 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 66009 invoked by uid 500); 2 Aug 2012 17:52:03 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hdfs-issues@hadoop.apache.org Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 66000 invoked by uid 99); 2 Aug 2012 17:52:03 -0000 Received: from issues-vm.apache.org (HELO issues-vm) (140.211.11.160) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 02 Aug 2012 17:52:03 +0000 Received: from isssues-vm.apache.org (localhost [127.0.0.1]) by issues-vm (Postfix) with ESMTP id 35692142823 for ; Thu, 2 Aug 2012 17:52:03 +0000 (UTC) Date: Thu, 2 Aug 2012 17:52:03 +0000 (UTC) From: "Eli Collins (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: <1682638451.6493.1343929923220.JavaMail.jiratomcat@issues-vm> In-Reply-To: <285109463.83406.1342811495418.JavaMail.jiratomcat@issues-vm> Subject: [jira] [Updated] (HDFS-3697) Enable fadvise readahead by default 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/HDFS-3697?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Eli Collins updated HDFS-3697: ------------------------------ Target Version/s: (was: 1.2.0, 3.0.0, 2.2.0-alpha) Fix Version/s: 1.2.0 > Enable fadvise readahead by default > ----------------------------------- > > Key: HDFS-3697 > URL: https://issues.apache.org/jira/browse/HDFS-3697 > Project: Hadoop HDFS > Issue Type: Improvement > Components: data-node, performance > Affects Versions: 3.0.0, 2.2.0-alpha > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Priority: Minor > Fix For: 1.2.0, 3.0.0, 2.2.0-alpha > > Attachments: hdfs-3697-branch-1.txt, hdfs-3697.txt, hdfs-3697.txt > > > The fadvise features have been implemented for some time, and we've enabled them in production at a lot of customer sites without difficulty. I'd like to enable the readahead feature by default in future versions so that users get this benefit without any manual configuration required. > The other fadvise features seem to be more workload-dependent and need further testing before enabling by default. -- 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