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Posted to dev@hbase.apache.org by "Andrew Kyle Purtell (Jira)" <ji...@apache.org> on 2022/06/17 17:35:00 UTC
[jira] [Resolved] (HBASE-12185) Deadlock in HConnectionManager$HConnectionImplementation
[ https://issues.apache.org/jira/browse/HBASE-12185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Kyle Purtell resolved HBASE-12185.
-----------------------------------------
Resolution: Duplicate
> Deadlock in HConnectionManager$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}
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