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 6C38911B63 for ; Fri, 18 Jul 2014 23:12:12 +0000 (UTC) Received: (qmail 60647 invoked by uid 500); 18 Jul 2014 23:12:12 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 60602 invoked by uid 500); 18 Jul 2014 23:12:12 -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 60590 invoked by uid 99); 18 Jul 2014 23:12:12 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 18 Jul 2014 23:12:12 +0000 Date: Fri, 18 Jul 2014 23:12:12 +0000 (UTC) From: "James Thomas (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HDFS-6482) Use block ID-based block layout on datanodes 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-6482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] James Thomas updated HDFS-6482: ------------------------------- Attachment: (was: HDFS-6482.9.patch) > Use block ID-based block layout on datanodes > -------------------------------------------- > > Key: HDFS-6482 > URL: https://issues.apache.org/jira/browse/HDFS-6482 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode > Affects Versions: 2.5.0 > Reporter: James Thomas > Assignee: James Thomas > Attachments: 6482-design.doc, HDFS-6482.1.patch, HDFS-6482.2.patch, HDFS-6482.3.patch, HDFS-6482.4.patch, HDFS-6482.5.patch, HDFS-6482.6.patch, HDFS-6482.7.patch, HDFS-6482.8.patch, HDFS-6482.9.patch, HDFS-6482.patch, hadoop-24-datanode-dir.tgz > > > Right now blocks are placed into directories that are split into many subdirectories when capacity is reached. Instead we can use a block's ID to determine the path it should go in. This eliminates the need for the LDir data structure that facilitates the splitting of directories when they reach capacity as well as fields in ReplicaInfo that keep track of a replica's location. > An extension of the work in HDFS-3290. -- This message was sent by Atlassian JIRA (v6.2#6252)