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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4967) Generate block ID sequentially cannot work with QJM HA
Date Tue, 09 Jul 2013 05:01:50 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13702921#comment-13702921
] 

Arpit Agarwal commented on HDFS-4967:
-------------------------------------

Thanks for reporting Fengdong! I am taking a look.
                
> Generate block ID sequentially cannot work with QJM HA
> ------------------------------------------------------
>
>                 Key: HDFS-4967
>                 URL: https://issues.apache.org/jira/browse/HDFS-4967
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, hdfs-client, namenode
>    Affects Versions: 3.0.0
>            Reporter: Fengdong Yu
>            Assignee: Arpit Agarwal
>
> There are two name nodes, one is active, another acts as standby name node. QJM Ha  configured.
> After HDFS-4645 committed in the trunk, then the following error showed during name node
start:
> {code}
> 2013-07-09 11:28:45,394 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Exception
in namenode join
> java.lang.IllegalStateException: Cannot skip to less than the current value (=1073741824),
where newValue=0
>         at org.apache.hadoop.util.SequentialNumber.skipTo(SequentialNumber.java:58)
>         at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setLastAllocatedBlockId(FSNamesystem.java:5124)
>         at org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.load(FSImageFormat.java:278)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:809)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:798)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImageFile(FSImage.java:653)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:623)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:260)
>         at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:719)
>         at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:552)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:401)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:435)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:607)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:592)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1172)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1238)
> 2013-07-09 11:28:45,397 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
> {code}

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