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From "Sammi Chen (Jira)" <j...@apache.org>
Subject [jira] [Created] (HDDS-2176) Add new pipeline state “CLOSING” and new CLOSE_PIPELINE_STATUS command
Date Wed, 25 Sep 2019 10:05:00 GMT
Sammi Chen created HDDS-2176:
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             Summary: Add new pipeline state “CLOSING” and new CLOSE_PIPELINE_STATUS command
                 Key: HDDS-2176
                 URL: https://issues.apache.org/jira/browse/HDDS-2176
             Project: Hadoop Distributed Data Store
          Issue Type: Sub-task
            Reporter: Sammi Chen
            Assignee: Sammi Chen


Currrent pipeline has 3 states,  ALLOCATED, OPEN and CLOSED. 
When create pipeline command is sent out to datanodes from SCM, this pipeline is marked as
ALLOCATED in SCM.  Once SCM received all 3 datanodes confirmation of pipelinee creation, SCM
will change pipeline's state from ALLOCATED to OPEN.  

Close pipeline process is similar.  Add a new CLOSING state to pipeline. When close pipeline
command is sent out to datanodes, pipeline will be marked as CLOSING.  When all 3 datanode
confirmed,  change pipeline state from CLOSING to CLOSED.



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