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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7231) rollingupgrade needs some guard rails
Date Fri, 24 Oct 2014 23:29:33 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14183724#comment-14183724
] 

Allen Wittenauer commented on HDFS-7231:
----------------------------------------

bq. (unable to continue)

This is the part I've also been trying to get more information on as well. :D  From what I've
been told, the first few directories were converted to the new format but not all of them.
 This seems to imply that the DN process was brought down at some point in time.  

bq. This as you know is a recipe for disaster 

I can neither confirm or deny this statement. ;)

bq. Before you go on to 2.4.1, if you do finalize of upgrade what happens?

It appears to work as expected.  So this whole condition appears to trigger with non-finalized
systems.  

> rollingupgrade needs some guard rails
> -------------------------------------
>
>                 Key: HDFS-7231
>                 URL: https://issues.apache.org/jira/browse/HDFS-7231
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Allen Wittenauer
>            Priority: Blocker
>
> See first comment.



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