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Jing Zhao resolved HDFS-7053. ----------------------------- Resolution: Invalid Close this jira as invalid. > 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 -- This message was sent by Atlassian JIRA (v6.3.4#6332)