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Tsz Wo Nicholas Sze commented on HDFS-7302: ------------------------------------------- Thanks for the new patch. Some comments: - Need to fix TestRollingUpgradeDowngrade. - The was a typo in [one of my previous comments|https://issues.apache.org/jira/browse/HDFS-7302?focusedCommentId=14334532&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14334532]: "a ongoing" should be "an ongoing". - Please add a full stop in the sentence below. {code} + It is not necessary to start namenode with downgrade options explicitly {code} > namenode -rollingUpgrade downgrade may finalize a rolling upgrade > ----------------------------------------------------------------- > > Key: HDFS-7302 > URL: https://issues.apache.org/jira/browse/HDFS-7302 > Project: Hadoop HDFS > Issue Type: Bug > Components: namenode > Reporter: Tsz Wo Nicholas Sze > Assignee: Kai Sasaki > Labels: document, hdfs > Attachments: HADOOP-7302.1.patch, HDFS-7302.2.patch > > > The namenode startup option "-rollingUpgrade downgrade" is originally > designed for downgrading cluster. However, running "namenode -rollingUpgrade > downgrade" with the new software could result in finalizing the ongoing > rolling upgrade. -- This message was sent by Atlassian JIRA (v6.3.4#6332)