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 6992817DFD for ; Fri, 10 Apr 2015 11:30:14 +0000 (UTC) Received: (qmail 60586 invoked by uid 500); 10 Apr 2015 11:30:14 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 60541 invoked by uid 500); 10 Apr 2015 11:30:14 -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 60529 invoked by uid 99); 10 Apr 2015 11:30:14 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 10 Apr 2015 11:30:14 +0000 Date: Fri, 10 Apr 2015 11:30:14 +0000 (UTC) From: "Rakesh R (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-7866) Erasure coding: NameNode manages EC schemas 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-7866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14489411#comment-14489411 ] Rakesh R commented on HDFS-7866: -------------------------------- bq. Regarding refreshECSchemas, you're right we should do that. We should avoid having to restart NameNode just for the reloading. Note the operation should be protected, only for admin. Thanks for the reply. Shall I raise a separate sub-task and start exploring it more? > Erasure coding: NameNode manages EC schemas > ------------------------------------------- > > Key: HDFS-7866 > URL: https://issues.apache.org/jira/browse/HDFS-7866 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Kai Zheng > Assignee: Kai Zheng > Attachments: HDFS-7866-v1.patch > > > This is to extend NameNode to load, list and sync predefine EC schemas in authorized and controlled approach. The provided facilities will be used to implement DFSAdmin commands so admin can list available EC schemas, then could choose some of them for target EC zones. -- This message was sent by Atlassian JIRA (v6.3.4#6332)