Return-Path: X-Original-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-common-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 EA83D18656 for ; Fri, 22 May 2015 10:02:22 +0000 (UTC) Received: (qmail 6523 invoked by uid 500); 22 May 2015 10:02:17 -0000 Delivered-To: apmail-hadoop-common-issues-archive@hadoop.apache.org Received: (qmail 6476 invoked by uid 500); 22 May 2015 10:02:17 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-issues@hadoop.apache.org Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 6465 invoked by uid 99); 22 May 2015 10:02:17 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 22 May 2015 10:02:17 +0000 Date: Fri, 22 May 2015 10:02:17 +0000 (UTC) From: "Kai Zheng (JIRA)" To: common-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HADOOP-11798) Native raw erasure coder in XOR 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-11798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Kai Zheng updated HADOOP-11798: ------------------------------- Attachment: HADOOP-11798-v1.patch Uploaded the patch. Pending on HADOOP-11887 and HADOOP-11996. > Native raw erasure coder in XOR codes > ------------------------------------- > > Key: HADOOP-11798 > URL: https://issues.apache.org/jira/browse/HADOOP-11798 > Project: Hadoop Common > Issue Type: Sub-task > Components: io > Reporter: Kai Zheng > Assignee: Kai Zheng > Fix For: HDFS-7285 > > Attachments: HADOOP-11798-v1.patch > > > Raw XOR coder is utilized in Reed-Solomon erasure coder in an optimization to recover only one erased block which is in most often case. It can also be used in HitchHiker coder. Therefore a native implementation of it would be deserved for performance gain. -- This message was sent by Atlassian JIRA (v6.3.4#6332)