From hdfs-issues-return-75222-apmail-hadoop-hdfs-issues-archive=hadoop.apache.org@hadoop.apache.org Thu Jan 2 19:27:50 2014 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 A503210DD0 for ; Thu, 2 Jan 2014 19:27:50 +0000 (UTC) Received: (qmail 61744 invoked by uid 500); 2 Jan 2014 19:27:50 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 61706 invoked by uid 500); 2 Jan 2014 19:27:50 -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 61698 invoked by uid 99); 2 Jan 2014 19:27:50 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 02 Jan 2014 19:27:50 +0000 Date: Thu, 2 Jan 2014 19:27:50 +0000 (UTC) From: "Brandon Li (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-5705) TestSecondaryNameNodeUpgrade#testChangeNsIDFails may fail due to ConcurrentModificationException 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-5705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13860640#comment-13860640 ] Brandon Li commented on HDFS-5705: ---------------------------------- The first suggestion sounds good to me. > TestSecondaryNameNodeUpgrade#testChangeNsIDFails may fail due to ConcurrentModificationException > ------------------------------------------------------------------------------------------------ > > Key: HDFS-5705 > URL: https://issues.apache.org/jira/browse/HDFS-5705 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Ted Yu > Attachments: hdfs-5705.html > > > From https://builds.apache.org/job/Hadoop-Hdfs-trunk/1626/testReport/org.apache.hadoop.hdfs.server.namenode/TestSecondaryNameNodeUpgrade/testChangeNsIDFails/ : > {code} > java.util.ConcurrentModificationException: null > at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) > at java.util.HashMap$EntryIterator.next(HashMap.java:834) > at java.util.HashMap$EntryIterator.next(HashMap.java:832) > at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.shutdown(FsVolumeImpl.java:251) > at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList.shutdown(FsVolumeList.java:218) > at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.shutdown(FsDatasetImpl.java:1414) > at org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown(DataNode.java:1309) > at org.apache.hadoop.hdfs.MiniDFSCluster.shutdownDataNodes(MiniDFSCluster.java:1464) > at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1439) > at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1423) > at org.apache.hadoop.hdfs.server.namenode.TestSecondaryNameNodeUpgrade.doIt(TestSecondaryNameNodeUpgrade.java:97) > at org.apache.hadoop.hdfs.server.namenode.TestSecondaryNameNodeUpgrade.testChangeNsIDFails(TestSecondaryNameNodeUpgrade.java:116) > {code} > The above happens when shutdown() is called in parallel to addBlockPool() or shutdownBlockPool(). -- This message was sent by Atlassian JIRA (v6.1.5#6160)