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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9344) RegionServer not shutting down upon KeeperException in open region
Date Tue, 27 Aug 2013 09:00:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13751095#comment-13751095
] 

Andrew Purtell commented on HBASE-9344:
---------------------------------------

+1 - What branches? All? lgtm
                
> RegionServer not shutting down upon KeeperException in open region
> ------------------------------------------------------------------
>
>                 Key: HBASE-9344
>                 URL: https://issues.apache.org/jira/browse/HBASE-9344
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>         Attachments: 9344-trunk.txt
>
>
> We ran into a situation where due to a Kerberos configuration problem one of our region
server could not connect to ZK when opening a region. Instead of shutting down it continue
to try to reconnect. Eventually the master would assign the region to another region server.
Each time that region server was assigned a region it would sit there for 5 mins with the
region offline. It would have been better if the region server had shut itself down.
> This is in the logs:
> {quote}
> 2013-08-16 17:31:35,999 WARN org.apache.hadoop.hbase.zookeeper.ZKUtil: hconnection-0x2407b842ff2012d-0x2407b842ff2012d-0x2407b842ff2012d
Unable to set watcher on znode (/hbase/hbaseid)
> org.apache.zookeeper.KeeperException$AuthFailedException: KeeperErrorCode = AuthFailed
for /hbase/hbaseid
>     at org.apache.zookeeper.KeeperException.create(KeeperException.java:123)
>     at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
>     at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
>     at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:172)
>     at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:450)
>     at org.apache.hadoop.hbase.zookeeper.ClusterId.readClusterIdZNode(ClusterId.java:61)
>     at org.apache.hadoop.hbase.zookeeper.ClusterId.getId(ClusterId.java:50)
>     at org.apache.hadoop.hbase.zookeeper.ClusterId.hasId(ClusterId.java:44)
>     at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.ensureZookeeperTrackers(HConnectionManager.java:616)
>     at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:882)
>     at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:857)
>     at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:233)
>     at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:173)
>     at org.apache.hadoop.hbase.catalog.MetaReader.getHTable(MetaReader.java:201)
>     at org.apache.hadoop.hbase.catalog.MetaReader.getMetaHTable(MetaReader.java:227)
>     at org.apache.hadoop.hbase.catalog.MetaReader.getCatalogHTable(MetaReader.java:214)
>     at org.apache.hadoop.hbase.catalog.MetaEditor.putToCatalogTable(MetaEditor.java:91)
>     at org.apache.hadoop.hbase.catalog.MetaEditor.updateLocation(MetaEditor.java:296)
>     at org.apache.hadoop.hbase.catalog.MetaEditor.updateRegionLocation(MetaEditor.java:276)
>     at org.apache.hadoop.hbase.regionserver.HRegionServer.postOpenDeployTasks(HRegionServer.java:1828)
>     at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler$PostOpenDeployTasksThread.run(OpenRegionHandler.java:240)
> {quote}
> I think the RS should shut itself down instead.

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