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 13856182C2 for ; Wed, 16 Dec 2015 01:47:48 +0000 (UTC) Received: (qmail 10194 invoked by uid 500); 16 Dec 2015 01:47:47 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 9938 invoked by uid 500); 16 Dec 2015 01:47:47 -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 9754 invoked by uid 99); 16 Dec 2015 01:47:47 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 16 Dec 2015 01:47:47 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 26BE52C1F6B for ; Wed, 16 Dec 2015 01:47:47 +0000 (UTC) Date: Wed, 16 Dec 2015 01:47:47 +0000 (UTC) From: "Kai Zheng (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-8030) HDFS Erasure Coding Phase II -- EC with contiguous layout 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-8030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15059317#comment-15059317 ] Kai Zheng commented on HDFS-8030: --------------------------------- Thanks [~zhz] for initiating phase II work. I guess we'll need a new branch to start the work? > HDFS Erasure Coding Phase II -- EC with contiguous layout > --------------------------------------------------------- > > Key: HDFS-8030 > URL: https://issues.apache.org/jira/browse/HDFS-8030 > Project: Hadoop HDFS > Issue Type: New Feature > Components: erasure-coding > Reporter: Zhe Zhang > Assignee: Zhe Zhang > Attachments: HDFSErasureCodingPhaseII-20151204.pdf > > > Data redundancy form -- replication or erasure coding, should be orthogonal to block layout -- contiguous or striped. This JIRA explores the combination of {{Erasure Coding}} + {{Contiguous}} block layout. > As will be detailed in the design document, key benefits include preserving block locality, and easy conversion between hot and cold modes. -- This message was sent by Atlassian JIRA (v6.3.4#6332)