Return-Path: X-Original-To: apmail-hbase-dev-archive@www.apache.org Delivered-To: apmail-hbase-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id DDCBF17694 for ; Tue, 7 Oct 2014 09:53:34 +0000 (UTC) Received: (qmail 90022 invoked by uid 500); 7 Oct 2014 09:53:34 -0000 Delivered-To: apmail-hbase-dev-archive@hbase.apache.org Received: (qmail 89893 invoked by uid 500); 7 Oct 2014 09:53:34 -0000 Mailing-List: contact dev-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hbase.apache.org Delivered-To: mailing list dev@hbase.apache.org Received: (qmail 89613 invoked by uid 99); 7 Oct 2014 09:53:34 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 07 Oct 2014 09:53:34 +0000 Date: Tue, 7 Oct 2014 09:53:34 +0000 (UTC) From: "Michael Tamm (JIRA)" To: dev@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (HBASE-12185) Deadlock in HConnectionManager$HConnectionImplementation MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Michael Tamm created HBASE-12185: ------------------------------------ Summary: Deadlock in HConnectionManager$HConnectionImplementation Key: HBASE-12185 URL: https://issues.apache.org/jira/browse/HBASE-12185 Project: HBase Issue Type: Bug Components: Client Affects Versions: 0.94.2 Environment: CDH 4.2.0 Reporter: Michael Tamm Priority: Critical Here you can see the relevant section of a thread dump: {noformat} Found one Java-level deadlock: ============================= "AsyncSave-700512-Worker-EventThread": waiting to lock monitor 0x00007f8d90eecd20 (object 0x00000005c0a8e1d0, a org.apache.hadoop.hbase.zookeeper.RootRegionTracker), which is held by "AsyncSave-700546-Worker" "AsyncSave-700546-Worker": waiting to lock monitor 0x00007f8d90149700 (object 0x0000000571404180, a org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation), which is held by "AsyncSave-700512-Worker-EventThread" Java stack information for the threads listed above: =================================================== "AsyncSave-700512-Worker-EventThread": at org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.stop(ZooKeeperNodeTracker.java:98) - waiting to lock <0x00000005c0a8e1d0> (a org.apache.hadoop.hbase.zookeeper.RootRegionTracker) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.resetZooKeeperTrackers(HConnectionManager.java:603) - locked <0x0000000571404180> (a org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.abort(HConnectionManager.java:1681) at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.connectionEvent(ZooKeeperWatcher.java:389) at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:286) at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519) at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495) "AsyncSave-700546-Worker": at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.resetZooKeeperTrackers(HConnectionManager.java:598) - waiting to lock <0x0000000571404180> (a org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.abort(HConnectionManager.java:1681) at org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.blockUntilAvailable(ZooKeeperNodeTracker.java:132) - locked <0x00000005c0a8e1d0> (a org.apache.hadoop.hbase.zookeeper.RootRegionTracker) at org.apache.hadoop.hbase.zookeeper.RootRegionTracker.waitRootRegionLocation(RootRegionTracker.java:83) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:841) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:954) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:852) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:954) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:856) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:813) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatchCallback(HConnectionManager.java:1503) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatch(HConnectionManager.java:1388) at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:955) at org.apache.hadoop.hbase.client.HTablePool$PooledHTable.flushCommits(HTablePool.java:449) at ... {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)