Janus Chow created HDDS-4734:
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Summary: Validate update state in
PipelineStateMap.updatePipelineState
Key: HDDS-4734
URL: https://issues.apache.org/jira/browse/HDDS-4734
Project: Hadoop Distributed Data Store
Issue Type: Improvement
Reporter: Janus Chow
The function of PipelineStateMap.updatePipelineState will update the pipeline's
state according to the new state in the parameter.
There is a chance that the new state is the same, say for Pipeline A, the old
state is OPEN, and the caller is updating the state of Pipeline A to OPEN
again, the direct impact is that _query2Openpipelines_ will add two Pipeline A
for the same query.
Or the differential control of the state is controlled by the higher level
invoker, that the caller will always update a different state for a pipeline.
I think it would be good to add a validator here that if the state is not
changed, we return directly.
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