From hdfs-issues-return-76789-apmail-hadoop-hdfs-issues-archive=hadoop.apache.org@hadoop.apache.org Sat Jan 25 14:23:42 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 07CD610FF5 for ; Sat, 25 Jan 2014 14:23:42 +0000 (UTC) Received: (qmail 29223 invoked by uid 500); 25 Jan 2014 14:23:41 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 29174 invoked by uid 500); 25 Jan 2014 14:23:40 -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 29076 invoked by uid 99); 25 Jan 2014 14:23:39 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 25 Jan 2014 14:23:39 +0000 Date: Sat, 25 Jan 2014 14:23:39 +0000 (UTC) From: "Rakesh R (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HDFS-5832) Deadeadlock found in NN between SafeMode#canLeave and DatanodeManager#handleHeartbeat 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-5832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rakesh R updated HDFS-5832: --------------------------- Attachment: HDFS-5832.patch Attaching a proposal where I have moved the namesystem.isInSafeMode(); out of datanodeMap lock. Could someone help me to validate this case. Thanks > Deadeadlock found in NN between SafeMode#canLeave and DatanodeManager#handleHeartbeat > ------------------------------------------------------------------------------------- > > Key: HDFS-5832 > URL: https://issues.apache.org/jira/browse/HDFS-5832 > Project: Hadoop HDFS > Issue Type: Bug > Components: namenode > Affects Versions: 3.0.0 > Reporter: Rakesh R > Assignee: Rakesh R > Priority: Blocker > Attachments: HDFS-5832.patch, jcarder_nn_deadlock.gif > > > Found the deadlock during the Namenode startup. Attached jcarder report which shows the cycles about the deadlock situation. -- This message was sent by Atlassian JIRA (v6.1.5#6160)