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 0F62F195D1 for ; Tue, 15 Mar 2016 09:11:44 +0000 (UTC) Received: (qmail 70799 invoked by uid 500); 15 Mar 2016 09:11:34 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 70194 invoked by uid 500); 15 Mar 2016 09:11:34 -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 69419 invoked by uid 99); 15 Mar 2016 09:11:34 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 15 Mar 2016 09:11:34 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id DC6062C1F6E for ; Tue, 15 Mar 2016 09:11:33 +0000 (UTC) Date: Tue, 15 Mar 2016 09:11:33 +0000 (UTC) From: "Kai Sasaki (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Resolved] (HDFS-10028) CLONE - Detect if resevered EC Block ID is already used 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-10028?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Kai Sasaki resolved HDFS-10028. ------------------------------- Resolution: Invalid > CLONE - Detect if resevered EC Block ID is already used > ------------------------------------------------------- > > Key: HDFS-10028 > URL: https://issues.apache.org/jira/browse/HDFS-10028 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: namenode > Reporter: dragon > Assignee: Hui Zheng > Fix For: HDFS-7285 > > > Since random block IDs were supported by some early version of HDFS, the block ID reserved for EC blocks could be already used by some existing blocks in a cluster. During NameNode startup, it detects if there are reserved EC block IDs used by non-EC blocks. If it is the case, NameNode will do an additional blocksMap lookup when there is a miss in a blockGroupsMap lookup. -- This message was sent by Atlassian JIRA (v6.3.4#6332)