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https://issues.apache.org/jira/browse/HDFS-7114?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kihwal Lee resolved HDFS-7114.
------------------------------
Resolution: Invalid
> Secondary NameNode failed to rollback from 2.4.1 to 2.2.0
> ---------------------------------------------------------
>
> Key: HDFS-7114
> URL: https://issues.apache.org/jira/browse/HDFS-7114
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.2.0
> Reporter: sam liu
> Priority: Blocker
>
> Can upgrade from 2.2.0 to 2.4.1, but failed to rollback the secondary
> namenode with following issue.
> 2014-09-22 10:41:28,358 FATAL
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Failed to start
> secondary namenode
> org.apache.hadoop.hdfs.server.common.IncorrectVersionException: Unexpected
> version of storage directory /var/hadoop/tmp/hdfs/dfs/namesecondary.
> Reported: -56. Expecting = -47.
> at
> org.apache.hadoop.hdfs.server.common.Storage.setLayoutVersion(Storage.java:1082)
> at
> org.apache.hadoop.hdfs.server.common.Storage.setFieldsFromProperties(Storage.java:890)
> at
> org.apache.hadoop.hdfs.server.namenode.NNStorage.setFieldsFromProperties(NNStorage.java:585)
> at
> org.apache.hadoop.hdfs.server.common.Storage.readProperties(Storage.java:921)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.recoverCreate(SecondaryNameNode.java:913)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:249)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:199)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:652)
> 2014-09-22 10:41:28,360 INFO org.apache.hadoop.util.ExitUtil: Exiting with
> status 1
> 2014-09-22 10:41:28,363 INFO
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: SHUTDOWN_MSG:
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