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From "sam liu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7053) Failed to rollback hdfs version from 2.4.1 to 2.2.0
Date Fri, 12 Sep 2014 06:44:34 GMT
sam liu created HDFS-7053:
-----------------------------

             Summary: Failed to rollback hdfs version from 2.4.1 to 2.2.0
                 Key: HDFS-7053
                 URL: https://issues.apache.org/jira/browse/HDFS-7053
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: ha, namenode
    Affects Versions: 2.4.1
            Reporter: sam liu
            Priority: Blocker


I can successfully upgrade from 2.2.0 to 2.4.1 with QJM HA enabled and with downtime, but
failed to rollback from 2.4.1 to 2.2.0. The error message:
 2014-09-10 16:50:29,599 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Exception
in namenode join
 org.apache.hadoop.HadoopIllegalArgumentException: Invalid startup option. Cannot perform
DFS upgrade with HA enabled.
              at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1207)
               at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1320)
 2014-09-10 16:50:29,601 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1




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