[
https://issues.apache.org/jira/browse/WHIRR-652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13454820#comment-13454820
]
Tom White commented on WHIRR-652:
---------------------------------
It's possible to run a NN without a JT (this was done as a part of the work for
YARN in WHIRR-391), but the other way round has not been tested.
It's certainly reasoanble to run a JT without a NN. I think the fix is
relatively simple - make the second rule configuration in
HadoopJobTrackerClusterActionHandler.doBeforeConfigure check if a NN can be
found before opening the port.
> NoSuchElementException if you try to deploy a JT in a cluster without an NN
> ---------------------------------------------------------------------------
>
> Key: WHIRR-652
> URL: https://issues.apache.org/jira/browse/WHIRR-652
> Project: Whirr
> Issue Type: Bug
> Components: service/hadoop
> Affects Versions: 0.9.0
> Environment: BYON + Hadoop 1.0.3
> Reporter: Steve Loughran
> Priority: Minor
>
> Trying to deploy a JT without an NN results in a failure (probably the right
> option) -but it doesn't get there until everything else has been done, and
> pops up with a stack trace
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
