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From "J.Andreina (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8110) Remove unsupported operation , -rollingUpgrade downgrade related information from document
Date Thu, 09 Apr 2015 06:58:12 GMT
J.Andreina created HDFS-8110:
--------------------------------

             Summary: Remove unsupported operation , -rollingUpgrade downgrade related information
from document
                 Key: HDFS-8110
                 URL: https://issues.apache.org/jira/browse/HDFS-8110
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: J.Andreina
            Assignee: J.Andreina
            Priority: Minor


Support for "-rollingUpgrade downgrade" is been removed as part of HDFS-7302.
Corresponding information should be removed from document also.
{noformat}
Downgrade with Downtime

Administrator may choose to first shutdown the cluster and then downgrade it. The following
are the steps:

Shutdown all NNs and DNs.
Restore the pre-upgrade release in all machines.
Start NNs with the "-rollingUpgrade downgrade" option.
Start DNs normally.
{noformat}




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