Return-Path: Delivered-To: apmail-lucene-hadoop-dev-archive@locus.apache.org Received: (qmail 39196 invoked from network); 16 Jan 2008 23:16:57 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 16 Jan 2008 23:16:57 -0000 Received: (qmail 33584 invoked by uid 500); 16 Jan 2008 23:16:45 -0000 Delivered-To: apmail-lucene-hadoop-dev-archive@lucene.apache.org Received: (qmail 33556 invoked by uid 500); 16 Jan 2008 23:16:45 -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 33544 invoked by uid 99); 16 Jan 2008 23:16:45 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 16 Jan 2008 15:16:45 -0800 X-ASF-Spam-Status: No, hits=-100.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.4] (HELO brutus.apache.org) (140.211.11.4) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 16 Jan 2008 23:16:28 +0000 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id AA56E71425E for ; Wed, 16 Jan 2008 15:16:34 -0800 (PST) Message-ID: <32587072.1200525394695.JavaMail.jira@brutus> Date: Wed, 16 Jan 2008 15:16:34 -0800 (PST) From: "dhruba borthakur (JIRA)" To: hadoop-dev@lucene.apache.org Subject: [jira] Updated: (HADOOP-1707) Remove the DFS Client disk-based cache In-Reply-To: <11154288.1186792782759.JavaMail.jira@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/HADOOP-1707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] dhruba borthakur updated HADOOP-1707: ------------------------------------- Status: Open (was: Patch Available) > Remove the DFS Client disk-based cache > -------------------------------------- > > Key: HADOOP-1707 > URL: https://issues.apache.org/jira/browse/HADOOP-1707 > Project: Hadoop > Issue Type: Improvement > Components: dfs > Reporter: dhruba borthakur > Assignee: dhruba borthakur > Fix For: 0.16.0 > > Attachments: clientDiskBuffer.patch, clientDiskBuffer10.patch, clientDiskBuffer11.patch, clientDiskBuffer12.patch, clientDiskBuffer14.patch, clientDiskBuffer15.patch, clientDiskBuffer16.patch, clientDiskBuffer17.patch, clientDiskBuffer18.patch, clientDiskBuffer19.patch, clientDiskBuffer2.patch, clientDiskBuffer20.patch, clientDiskBuffer21.patch, clientDiskBuffer22.patch, clientDiskBuffer23.patch, clientDiskBuffer23.patch, clientDiskBuffer24.patch, clientDiskBuffer24.patch, clientDiskBuffer25.patch, clientDiskBuffer26.patch, clientDiskBuffer6.patch, clientDiskBuffer7.patch, clientDiskBuffer8.patch, clientDiskBuffer9.patch, DataTransferProtocol.doc, DataTransferProtocol.html > > > The DFS client currently uses a staging file on local disk to cache all user-writes to a file. When the staging file accumulates 1 block worth of data, its contents are flushed to a HDFS datanode. These operations occur sequentially. > A simple optimization of allowing the user to write to another staging file while simultaneously uploading the contents of the first staging file to HDFS will improve file-upload performance. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.