Return-Path: X-Original-To: apmail-hbase-issues-archive@www.apache.org Delivered-To: apmail-hbase-issues-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 34D9A10602 for ; Fri, 2 Aug 2013 14:21:51 +0000 (UTC) Received: (qmail 90487 invoked by uid 500); 2 Aug 2013 14:21:50 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 90402 invoked by uid 500); 2 Aug 2013 14:21:50 -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 90330 invoked by uid 99); 2 Aug 2013 14:21:49 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 02 Aug 2013 14:21:49 +0000 Date: Fri, 2 Aug 2013 14:21:49 +0000 (UTC) From: "Ted Yu (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-9109) Null pointer exception while invoking coprocessor. 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/HBASE-9109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13727700#comment-13727700 ] Ted Yu commented on HBASE-9109: ------------------------------- @Asha: TestAggregateProtocol.java uses code very close to the snippet you gave. The test passes consistently. Mind giving us some more detail ? > Null pointer exception while invoking coprocessor. > -------------------------------------------------- > > Key: HBASE-9109 > URL: https://issues.apache.org/jira/browse/HBASE-9109 > Project: HBase > Issue Type: Bug > Components: Client, Coprocessors > Affects Versions: 0.98.0 > Environment: OS - CentOS release 6.2 (Final) > JAVA - java version "1.6.0_22" > OpenJDK Runtime Environment (IcedTea6 1.10.4) (rhel-1.41.1.10.4.el6-x86_64) > OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode) > Configuration: 3 node cluster with Hadoop-3.0 > Reporter: Mayur > Fix For: 0.98.0 > > > This problem is observed when region server dies while an endpoint coprocessor is executing. On the client side channel.getLastRegion() returns null and we get null pointer exception while updating result map. > Following stack-trace is seen on client: > Caused by: java.lang.NullPointerException > at org.apache.hadoop.hbase.util.Bytes.compareTo(Bytes.java:981) > at org.apache.hadoop.hbase.util.Bytes$ByteArrayComparator.compare(Bytes.java:128) > at org.apache.hadoop.hbase.util.Bytes$ByteArrayComparator.compare(Bytes.java:119) > at java.util.TreeMap.put(TreeMap.java:530) > at java.util.Collections$SynchronizedMap.put(Collections.java:1979) > at org.apache.hadoop.hbase.client.HTable$17.update(HTable.java:1372) > at org.apache.hadoop.hbase.client.HTable$18.call(HTable.java:1401) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) > at java.util.concurrent.FutureTask.run(FutureTask.java:138) > at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:662) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira