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 07F4E11699 for ; Wed, 14 May 2014 22:59:36 +0000 (UTC) Received: (qmail 64161 invoked by uid 500); 13 May 2014 15:41:16 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 64107 invoked by uid 500); 13 May 2014 15:41:16 -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 63996 invoked by uid 99); 13 May 2014 15:41:16 -0000 Received: from Unknown (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 13 May 2014 15:41:16 +0000 Date: Tue, 13 May 2014 15:41:16 +0000 (UTC) From: "Tsz Wo Nicholas Sze (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-2006) ability to support storing extended attributes per file 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-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13996507#comment-13996507 ] Tsz Wo Nicholas Sze commented on HDFS-2006: ------------------------------------------- The latest design looks good. For a XAttr with large value, writing it to editlog may be a problem. Do we plan to have a size limit on the size of XAttr values? > ability to support storing extended attributes per file > ------------------------------------------------------- > > Key: HDFS-2006 > URL: https://issues.apache.org/jira/browse/HDFS-2006 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Affects Versions: HDFS XAttrs (HDFS-2006) > Reporter: dhruba borthakur > Assignee: Yi Liu > Attachments: HDFS-XAttrs-Design-1.pdf, HDFS-XAttrs-Design-2.pdf, HDFS-XAttrs-Design-3.pdf, Test-Plan-for-Extended-Attributes-1.pdf, xattrs.1.patch, xattrs.patch > > > It would be nice if HDFS provides a feature to store extended attributes for files, similar to the one described here: http://en.wikipedia.org/wiki/Extended_file_attributes. > The challenge is that it has to be done in such a way that a site not using this feature does not waste precious memory resources in the namenode. -- This message was sent by Atlassian JIRA (v6.2#6252)