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https://issues.apache.org/jira/browse/WHIRR-414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146467#comment-13146467
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Paul Baclace commented on WHIRR-414:
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The contract of non-zero return code is clear: the program failed. For
automation purposes it is essential that this logic works correctly.
Solving the problem of false positive DOA (dead on arrival) servers is another
matter.
For me, emitting a message about possible orphans really means send an alert
and waking me up from much-needed sleep. (This is is what I currently do and
it is not so nice.)
> whirr can have a non-zero return code and unterminated (orphaned) host
> instances
> --------------------------------------------------------------------------------
>
> Key: WHIRR-414
> URL: https://issues.apache.org/jira/browse/WHIRR-414
> Project: Whirr
> Issue Type: Bug
> Components: core
> Affects Versions: 0.6.0
> Environment: EC2, commandline whirr
> Reporter: Paul Baclace
> Assignee: Andrei Savu
> Priority: Critical
> Fix For: 0.7.0
>
> Attachments: WHIRR-414.patch
>
>
> Whirr can fail to completely start a cluster and indicates this with a
> non-zero return code. In many (currently intermittent) partial failure
> scenarios, there are resources still active (EC2 machine instances, in my
> experience) that are not cleaned up.
> The log contains "IOException: Too many instance failed while bootstrapping!"
> when I have seen orphaned nodes.
> A non-zero return code should guarantee that all resources are cleaned up.
> Without this post-condition, these failures require manual inspection and
> cleanup to stop useless expenses (which is why I marked this bug critical; it
> needs to be addressed for any kind of cron job triggered whirr).
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