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 F38BE178D5 for ; Mon, 13 Oct 2014 21:18:34 +0000 (UTC) Received: (qmail 78920 invoked by uid 500); 13 Oct 2014 21:18:34 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 78864 invoked by uid 500); 13 Oct 2014 21:18:34 -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 78850 invoked by uid 99); 13 Oct 2014 21:18:34 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 13 Oct 2014 21:18:34 +0000 Date: Mon, 13 Oct 2014 21:18:34 +0000 (UTC) From: "Suresh Srinivas (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-7228) Add an SSD policy into the default BlockStoragePolicySuite 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-7228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14169994#comment-14169994 ] Suresh Srinivas commented on HDFS-7228: --------------------------------------- [~jingzhao], is this policy placing all the replicas in SSD? Instead of that, should we place only one replica in SSD and the remaining in default storage? This may be better given SSD is more expensive than disk and may not be as abundant as disk? Applications can place their computation tasks closer to SSD replica (which is possible given block location now includes storage type). > Add an SSD policy into the default BlockStoragePolicySuite > ---------------------------------------------------------- > > Key: HDFS-7228 > URL: https://issues.apache.org/jira/browse/HDFS-7228 > Project: Hadoop HDFS > Issue Type: Improvement > Affects Versions: 2.6.0 > Reporter: Jing Zhao > Assignee: Jing Zhao > Attachments: HDFS-7228.000.patch > > > Currently in the default BlockStoragePolicySuite, we've defined 4 storage policies: LAZY_PERSIST, HOT, WARM, and COLD. Since we have already defined the SSD storage type, it will be useful to also include a SSD related storage policy in the default suite. -- This message was sent by Atlassian JIRA (v6.3.4#6332)