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https://issues.apache.org/jira/browse/HADOOP-3153?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated HADOOP-3153:
--------------------------------------------
Attachment: HADOOP-3153.1
Attaching a second patch incorporating above suggestions.
- Allocate works now, even if .hod directory does not exist.
- Made changes to error messages.
- Incorporated minor points and suggestions for changes in test-cases.
- Now, deallocation happens when the except block of the last part of the
allocate command is triggered. Tested this by putting in a hard-coded
exception, and verified that cluster is deallocated.
- To implement the above, re-factored code in hadoop.py a bit. Tested the
re-factored code too(by giving an interrupt after ringmaster comes up).
- Made changes to error codes so that 1 is returned when failing because of
an invalid state file. ( <1><Configuration error><Incorrect configuration
values specified in hodrc, or other errors related to HOD configuration. The
error messages in this case must be sufficient to debug and fix the problem> )
> [HOD] Hod should deallocate cluster if there's a problem in writing
> information to the state file
> -------------------------------------------------------------------------------------------------
>
> Key: HADOOP-3153
> URL: https://issues.apache.org/jira/browse/HADOOP-3153
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/hod
> Affects Versions: 0.16.0
> Reporter: Hemanth Yamijala
> Assignee: Vinod Kumar Vavilapalli
> Fix For: 0.17.0
>
> Attachments: HADOOP-3153, HADOOP-3153.1
>
>
> Consider a scenario where hod runs allocate successfully, but isn't able to
> save teh allocated information to the clusters.state file. In such a case, it
> gets an error and exits. But the cluster remains allocated, and unfortunately
> the user cannot deallocate the cluster now unless he knows the cluster
> directory.
> It is better if HOD can deallocate the cluster in such an error condition.
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