Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 07FFB200AE3 for ; Wed, 4 May 2016 18:28:15 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 06D671609A1; Wed, 4 May 2016 16:28:15 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 3ECDB160A01 for ; Wed, 4 May 2016 18:28:14 +0200 (CEST) Received: (qmail 96367 invoked by uid 500); 4 May 2016 16:28:13 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 96253 invoked by uid 99); 4 May 2016 16:28:13 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 04 May 2016 16:28:13 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 1319E2C1F6B for ; Wed, 4 May 2016 16:28:13 +0000 (UTC) Date: Wed, 4 May 2016 16:28:13 +0000 (UTC) From: "Xiao Chen (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-10320) Rack failures may result in NN terminate MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Wed, 04 May 2016 16:28:15 -0000 [ https://issues.apache.org/jira/browse/HDFS-10320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15270938#comment-15270938 ] Xiao Chen commented on HDFS-10320: ---------------------------------- After a good night's sleep, I see the {{addToExcludedNodes(chosenNode, excludedNodes);}} line is needed, for subclasses. Jenkins is complaining about it as well... Patch 5 adds that back. Sorry I missed that in my last patch. > Rack failures may result in NN terminate > ---------------------------------------- > > Key: HDFS-10320 > URL: https://issues.apache.org/jira/browse/HDFS-10320 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Xiao Chen > Assignee: Xiao Chen > Attachments: HDFS-10320.01.patch, HDFS-10320.02.patch, HDFS-10320.03.patch, HDFS-10320.04.patch, HDFS-10320.05.patch > > > If there're rack failures which end up leaving only 1 rack available, {{BlockPlacementPolicyDefault#chooseRandom}} may get {{InvalidTopologyException}} when calling {{NetworkTopology#chooseRandom}}, which then throws all the way out to {{BlockManager}}'s {{ReplicationMonitor}} thread and terminate the NN. > Log: > {noformat} > 2016-02-24 09:22:01,514 WARN org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy: Failed to place enough replicas, still in need of 1 to reach 3 (unavailableStorages=[], storagePolicy=BlockStoragePolicy{HOT:7, storageTypes=[DISK], creationFallbacks=[], replicationFallbacks=[ARCHIVE]}, newBlock=true) For more information, please enable DEBUG log level on org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy > 2016-02-24 09:22:01,958 ERROR org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: ReplicationMonitor thread received Runtime exception. > org.apache.hadoop.net.NetworkTopology$InvalidTopologyException: Failed to find datanode (scope="" excludedScope="/rack_a5"). > at org.apache.hadoop.net.NetworkTopology.chooseRandom(NetworkTopology.java:729) > at org.apache.hadoop.net.NetworkTopology.chooseRandom(NetworkTopology.java:694) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRandom(BlockPlacementPolicyDefault.java:635) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseRemoteRack(BlockPlacementPolicyDefault.java:580) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:348) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:214) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicyDefault.chooseTarget(BlockPlacementPolicyDefault.java:111) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationWork.chooseTargets(BlockManager.java:3746) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationWork.access$200(BlockManager.java:3711) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWorkForBlocks(BlockManager.java:1400) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWork(BlockManager.java:1306) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:3682) > at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:3634) > at java.lang.Thread.run(Thread.java:745) > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org