Return-Path: Delivered-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Received: (qmail 57430 invoked from network); 25 Jan 2010 19:15:56 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 25 Jan 2010 19:15:56 -0000 Received: (qmail 20824 invoked by uid 500); 25 Jan 2010 19:15:55 -0000 Delivered-To: apmail-hadoop-common-issues-archive@hadoop.apache.org Received: (qmail 20780 invoked by uid 500); 25 Jan 2010 19:15:55 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-issues@hadoop.apache.org Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 20770 invoked by uid 99); 25 Jan 2010 19:15:55 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 25 Jan 2010 19:15:55 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 25 Jan 2010 19:15:55 +0000 Received: from brutus.apache.org (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id D18E829A0017 for ; Mon, 25 Jan 2010 11:15:34 -0800 (PST) Message-ID: <71818857.17351264446934857.JavaMail.jira@brutus.apache.org> Date: Mon, 25 Jan 2010 19:15:34 +0000 (UTC) From: "Hairong Kuang (JIRA)" To: common-issues@hadoop.apache.org Subject: [jira] Updated: (HADOOP-6498) IPC client bug may cause rpc call hang In-Reply-To: <1804625144.314721263831774474.JavaMail.jira@brutus.apache.org> 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/HADOOP-6498?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Hairong Kuang updated HADOOP-6498: ---------------------------------- Attachment: hangClient.patch Ok, Ruyue, I know that you are busy but this is a critical bug. So I worked on the fix. Here comes a new patch. It has two changes to Ruyue's patch: 1. adds a unit test. 2. do calls.remove(id) only only when the call succeeds. > IPC client bug may cause rpc call hang > --------------------------------------- > > Key: HADOOP-6498 > URL: https://issues.apache.org/jira/browse/HADOOP-6498 > Project: Hadoop Common > Issue Type: Bug > Components: ipc > Affects Versions: 0.18.3, 0.19.0, 0.19.1, 0.19.2, 0.20.0, 0.20.1 > Reporter: Ruyue Ma > Assignee: Ruyue Ma > Priority: Blocker > Fix For: 0.20.2, 0.21.0 > > Attachments: hadoop-6498-branch-0.20, hadoop-6498.patch, hangClient.patch > > > I can reproduce some rpc call hang bug when connection thread of ipc client receives response for outstanding call. > The stacks when hang occurs (TaskTracker): > Waiting on org.apache.hadoop.ipc.Client$Call@1c3cbb4b > Stack: > java.lang.Object.wait(Native Method) > java.lang.Object.wait(Object.java:485) > org.apache.hadoop.ipc.Client.call(Client.java:691) > org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216) > org.apache.hadoop.mapred.$Proxy4.heartbeat(Unknown Source) > org.apache.hadoop.mapred.TaskTracker.transmitHeartBeat(TaskTracker.java:1250) > org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:1082) > org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:1785) > org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:2796) -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.