[HOD] Split the operations of allocation from provisioning in HOD.
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Key: HADOOP-2850
URL: https://issues.apache.org/jira/browse/HADOOP-2850
Project: Hadoop Core
Issue Type: Bug
Components: contrib/hod
Affects Versions: 0.16.0
Reporter: Hemanth Yamijala
Assignee: Hemanth Yamijala
Fix For: 0.17.0
Currently, the HOD allocation operation does the following distinct steps -
allocate a requested number of nodes, [optionally] transfer a hadoop tarball
and install it, then provision hadoop by bringing up the appropriate daemons.
It would be nice to separate these layers so each of them could be done
independently.
This would lead to a very great flexibility in users using the cluster. For
e.g. one could allocate a certain number of nodes, then have hod bring up one
version, then bring it down, then repeat this again and so on.
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