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 682E117F76 for ; Mon, 20 Apr 2015 18:23:01 +0000 (UTC) Received: (qmail 83021 invoked by uid 500); 20 Apr 2015 18:23:01 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 82970 invoked by uid 500); 20 Apr 2015 18:23:01 -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 82958 invoked by uid 99); 20 Apr 2015 18:23:01 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 20 Apr 2015 18:23:01 +0000 Date: Mon, 20 Apr 2015 18:23:01 +0000 (UTC) From: "Tsz Wo Nicholas Sze (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-8147) Mover should not select the DN storage as target where already same replica exists. 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-8147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14503338#comment-14503338 ] Tsz Wo Nicholas Sze commented on HDFS-8147: ------------------------------------------- > ... So contains() always return false. It better to override equals() in StorageGroup. ... I see. Thanks for pointing it out and working on it. > Mover should not select the DN storage as target where already same replica exists. > ----------------------------------------------------------------------------------- > > Key: HDFS-8147 > URL: https://issues.apache.org/jira/browse/HDFS-8147 > Project: Hadoop HDFS > Issue Type: Bug > Components: balancer & mover > Affects Versions: 2.6.0 > Reporter: surendra singh lilhore > Assignee: surendra singh lilhore > Attachments: HDFS-8147.patch, HDFS-8147_1.patch > > > *Scenario:* > 1. Three DN cluster. For DNs storage type is like this. > DN1 : DISK,ARCHIVE > DN2 : DISK > DN3 : DISK,ARCHIVE (All DNs are in same rack) > 2. One file with two replicas (In DN1 and DN2) > 3. Set file storage policy COLD > 4. Now execute Mover. > *Expected Result:* File blocks should move in DN1:ARCHIVE and DN3:ARCHIVE > *Actual Result:* {{chooseTargetInSameNode()}} move D1:DISK block to D1:ARCHIVE, but in next iteration {{chooseTarget()}} for same rake is selecting again DN1:ARCHIVE for target where already same block exists. > {{chooseTargetInSameNode()}} and {{chooseTarget()}} should not select the node as target where already same replica exists. > *Logs* > {code} > 15/04/15 10:47:17 WARN balancer.Dispatcher: Failed to move blk_1073741852_1028 with size=11990 from 10.19.92.74:50010:DISK to 10.19.92.73:50010:ARCHIVE through 10.19.92.73:50010: Got error, status message opReplaceBlock BP-1258709199-10.19.92.74-1428292615636:blk_1073741852_1028 received exception org.apache.hadoop.hdfs.server.datanode.ReplicaAlreadyExistsException: Replica FinalizedReplica, blk_1073741852_1028, FINALIZED > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)