From common-issues-return-154457-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Wed Jul 4 08:28:05 2018 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 4FFF0180674 for ; Wed, 4 Jul 2018 08:28:05 +0200 (CEST) Received: (qmail 31842 invoked by uid 500); 4 Jul 2018 06:28:04 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 31636 invoked by uid 99); 4 Jul 2018 06:28:04 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 04 Jul 2018 06:28:04 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd2-us-west.apache.org (ASF Mail Server at spamd2-us-west.apache.org) with ESMTP id CDDCB1A4B95 for ; Wed, 4 Jul 2018 06:28:03 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd2-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -109.501 X-Spam-Level: X-Spam-Status: No, score=-109.501 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, KAM_ASCII_DIVIDERS=0.8, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, USER_IN_DEF_SPF_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id Unl3zepA8-85 for ; Wed, 4 Jul 2018 06:28:03 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 28E4D5F4DC for ; Wed, 4 Jul 2018 06:28:02 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 83044E111B for ; Wed, 4 Jul 2018 06:28:01 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 77B082750D for ; Wed, 4 Jul 2018 06:28:00 +0000 (UTC) Date: Wed, 4 Jul 2018 06:28:00 +0000 (UTC) From: "Chaitanya Mukka (JIRA)" To: common-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HADOOP-15558) Implementation of Clay Codes plugin (Coupled Layer MSR codes) 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-15558?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Chaitanya Mukka updated HADOOP-15558: ------------------------------------- Status: Open (was: Patch Available) There has been a mistake in the submitted patch. The error crept in unnoticed. The necessary changes will be made and I will upload another patch. > Implementation of Clay Codes plugin (Coupled Layer MSR codes) > -------------------------------------------------------------- > > Key: HADOOP-15558 > URL: https://issues.apache.org/jira/browse/HADOOP-15558 > Project: Hadoop Common > Issue Type: New Feature > Reporter: Chaitanya Mukka > Assignee: Chaitanya Mukka > Priority: Major > Attachments: ClayCodeCodecDesign-20180630.pdf, HADOOP-15558.001.patch > > > [Clay Codes|https://www.usenix.org/conference/fast18/presentation/vajha] are new erasure codes developed as a research project at Codes and Signal Design Lab, IISc Bangalore. A particular Clay code, with storage overhead 1.25x, has been shown to reduce repair network traffic, disk read and repair times by factors of 2.9, 3.4 and 3 respectively compared to the RS codes with the same parameters. > This Jira aims to introduce Clay Codes to HDFS-EC as one of the pluggable erasure codec. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: common-issues-help@hadoop.apache.org