Return-Path: Delivered-To: apmail-hbase-issues-archive@www.apache.org Received: (qmail 45472 invoked from network); 12 Mar 2011 00:15:21 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 12 Mar 2011 00:15:21 -0000 Received: (qmail 36159 invoked by uid 500); 12 Mar 2011 00:15:21 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 36124 invoked by uid 500); 12 Mar 2011 00:15:21 -0000 Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list issues@hbase.apache.org Received: (qmail 36116 invoked by uid 99); 12 Mar 2011 00:15:21 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 12 Mar 2011 00:15:21 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=5.0 tests=ALL_TRUSTED,T_RP_MATCHES_RCVD X-Spam-Check-By: apache.org Received: from [140.211.11.116] (HELO hel.zones.apache.org) (140.211.11.116) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 12 Mar 2011 00:15:20 +0000 Received: from hel.zones.apache.org (hel.zones.apache.org [140.211.11.116]) by hel.zones.apache.org (Postfix) with ESMTP id 7409F3A410A for ; Sat, 12 Mar 2011 00:14:59 +0000 (UTC) Date: Sat, 12 Mar 2011 00:14:59 +0000 (UTC) From: "Jean-Daniel Cryans (JIRA)" To: issues@hbase.apache.org Message-ID: <964470273.14804.1299888899471.JavaMail.tomcat@hel.zones.apache.org> Subject: [jira] Created: (HBASE-3627) NPE in EventHandler when region already reassigned MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 NPE in EventHandler when region already reassigned -------------------------------------------------- Key: HBASE-3627 URL: https://issues.apache.org/jira/browse/HBASE-3627 Project: HBase Issue Type: Bug Affects Versions: 0.90.1 Reporter: Jean-Daniel Cryans Priority: Critical Fix For: 0.90.2 When a region takes too long to open, it will try to update the unassigned znode and will fail on an ugly NPE like this: {quote} DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign: regionserver:60020-0x22dc571dde04ca7 Attempting to transition node 0519dc3b62a569347526875048c37faa from RS_ZK_REGION_OPENING to RS_ZK_REGION_OPENING DEBUG org.apache.hadoop.hbase.zookeeper.ZKUtil: regionserver:60020-0x22dc571dde04ca7 Unable to get data of znode /hbase/unassigned/0519dc3b62a569347526875048c37faa because node does not exist (not necessarily an error) ERROR org.apache.hadoop.hbase.executor.EventHandler: Caught throwable while processing event M_RS_OPEN_REGION java.lang.NullPointerException at org.apache.hadoop.hbase.util.Writables.getWritable(Writables.java:75) at org.apache.hadoop.hbase.executor.RegionTransitionData.fromBytes(RegionTransitionData.java:198) at org.apache.hadoop.hbase.zookeeper.ZKAssign.transitionNode(ZKAssign.java:672) at org.apache.hadoop.hbase.zookeeper.ZKAssign.retransitionNodeOpening(ZKAssign.java:585) at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.tickleOpening(OpenRegionHandler.java:322) at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:97) at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:151) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) {quote} I think the region server in this case should be closing the region ASAP. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira