Li Lu created YARN-4445:
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             Summary: Unify the term flowId and flowName in timeline v2 codebase
                 Key: YARN-4445
                 URL: https://issues.apache.org/jira/browse/YARN-4445
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Li Lu
            Assignee: Li Lu


Flow names are not sufficient to identify a flow. I noticed we used both 
"flowName" and "flowId" to point to the same thing. We need to unify them to 
flowName. Otherwise, front end users may think flow id is a top level concept 
and try to directly locate a flow by its flow id.  



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