1996fanrui commented on PR #22552:
URL: https://github.com/apache/flink/pull/22552#issuecomment-1560642275

   Hi @xintongsong , would you mind help review this PR in your free time? It's 
an improvement of FLINK-30185, and this solution is based on our previous 
discussion in #21447 [1].
   
   ## Flame graph collection
   
   - The stats collected for job vertex and execution vertex will be collected 
into the executionVertexStatsCache.
   - The stats collected for job vertex will be collected into the 
jobVertexStatsCache.
   
   ## Flame graph query
   
   - The stats of job vertex will query from the executionVertexStatsCache.
   - The stats of execution vertex will query from the 
executionVertexStatsCache.
   
   [1] https://github.com/apache/flink/pull/21447#issuecomment-1354188912


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