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From "gaojinchao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3800) If HMaster is started after NN without starting DN in Hbase 090.2 then HMaster is not able to start due to AlreadyCreatedException for /hbase/hbase.version
Date Wed, 20 Apr 2011 02:39:06 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13021918#comment-13021918
] 

gaojinchao commented on HBASE-3800:
-----------------------------------

OK, I will make a mistake if I make a patch.
thanks.

> If HMaster is started after NN without starting DN in Hbase 090.2 then HMaster is not
able to start due to AlreadyCreatedException for /hbase/hbase.version
> -----------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-3800
>                 URL: https://issues.apache.org/jira/browse/HBASE-3800
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.90.2
>            Reporter: gaojinchao
>            Assignee: Andrew Purtell
>             Fix For: 0.90.3, 0.92.0
>
>         Attachments: HBASE-3800-0.90.patch, HBASE-3800-trunk.patch
>
>
> It reproduces when HMaster is started for the first time and NN is started without starting
DN
> Hmaster logs:
> 2011-04-19 16:49:09,208 DEBUG org.apache.hadoop.hbase.master.ActiveMasterManager: A master
is now available
> 2011-04-19 16:49:09,400 WARN org.apache.hadoop.hbase.util.FSUtils: Version file was empty,
odd, will try to set it.
> 2011-04-19 16:51:09,674 WARN org.apache.hadoop.hdfs.DFSClient: DataStreamer Exception:
org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /hbase/hbase.version could
only be replicated to 0 nodes, instead of 1
> ...........
> 2011-04-19 16:51:09,674 WARN org.apache.hadoop.hdfs.DFSClient: Error Recovery for block
null bad datanode[0] nodes == null
> 2011-04-19 16:51:09,674 WARN org.apache.hadoop.hdfs.DFSClient: Could not get block locations.
Source file "/hbase/hbase.version" - Aborting...
> 2011-04-19 16:51:09,674 WARN org.apache.hadoop.hbase.util.FSUtils: Unable to create version
file at hdfs://C4C1:9000/hbase, retrying: org.apache.hadoop.ipc.RemoteException: java.io.IOException:
File /hbase/hbase.version could only be replicated to 0 nodes, instead of 1
> ...........
> 2011-04-19 16:56:19,695 WARN org.apache.hadoop.hbase.util.FSUtils: Unable to create version
file at hdfs://C4C1:9000/hbase, retrying: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException:
failed to create file /hbase/hbase.version for DFSClient_hb_m_C4C1.site:60000_1303202948768
on client 157.5.100.1 because current leaseholder is trying to recreate file.
> org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException: failed to create file /hbase/hbase.version
for DFSClient_hb_m_C4C1.site:60000_1303202948768 on client 157.5.100.1 because current leaseholder
is trying to recreate file.
>        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1068)
> ....

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