[ https://issues.apache.org/jira/browse/ZOOKEEPER-2476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15380371#comment-15380371 ]
Jordan Zimmerman commented on ZOOKEEPER-2476: --------------------------------------------- In this case we have 1 participant and 1 observer. I can't think of a reason why the upgrade shouldn't be allowed. The 1 existing server can manage the entire "quorum". The observer being upgraded cannot possibly be out of sync. > Not possible to upgrade via reconfig a Participant+Observer cluster to a > Participant+Participant cluster > -------------------------------------------------------------------------------------------------------- > > Key: ZOOKEEPER-2476 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2476 > Project: ZooKeeper > Issue Type: Bug > Components: quorum, server > Affects Versions: 3.5.1 > Reporter: Jordan Zimmerman > Assignee: Alexander Shraer > Priority: Critical > Attachments: ZOOKEEPER-2476.patch > > > Contrary to the documentation, it is not possible to upgrade via reconfig a > Participant+Observer cluster to a Participant+Participant cluster. > KeeperException.NewConfigNoQuorum is thrown instead. > PrepRequestProcessor should recognize this special case and let it pass. Test > will be enclosed shortly. I'll work on a fix as well, but I imagine that > [~shralex] will want to look at it. -- This message was sent by Atlassian JIRA (v6.3.4#6332)