[HOD] Hod should deallocate cluster if there's a problem in writing information
to the state file
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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
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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