[jira] [Created] (HDDS-2196) Add CLI Commands and Protobuf messages to trigger decom states

["Stephen O'Donnell (Jira)" <ji...@apache.org>]

Stephen O'Donnell created HDDS-2196:
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             Summary: Add CLI Commands and Protobuf messages to trigger decom states
                 Key: HDDS-2196
                 URL: https://issues.apache.org/jira/browse/HDDS-2196
             Project: Hadoop Distributed Data Store
          Issue Type: Sub-task
          Components: SCM, SCM Client
    Affects Versions: 0.5.0
            Reporter: Stephen O'Donnell
            Assignee: Stephen O'Donnell


To all nodes to be decommissioned, recommissioned and put into maintenance, we need a few commands.

These will be added to the existing "scm cli". 3 commands are proposed:

Decommission:

ozone scmcli dnadmin decommission hosta hostb hostc:port ...

Put nodes into maintenance:

osone scmcli dnadmin maintenance hosta hostb hostc:port ... <-endHours>

Take nodes out of maintenance or halt decommission:

ozone scmcli dnadmin recommission hosta hostb hostc:port

These 3 commands will call 3 new protobuf messages and they will be part of the "StorageContainerLocationProtocol":
 * DecommissionNodesRequestProto
 * RecommissionNodesRequestProto
 * StartMaintenanceNodesRequestProto

In additional a new class NodeDecommissionManager will be introduced that will receive these commands and carry out the decommission steps.

In this patch NodeDecommissionManager is only a skeleton implementation to receive the commands as this patch is mainly focused on getting the CLI commands and protobuf messages in place.



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