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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