WinkerDu opened a new pull request, #28589:
URL: https://github.com/apache/doris/pull/28589

   ## Proposed changes
   
   Issue Number: close #xxx
   
   My organization try to accelerate HMS Lake query based on #24830, which 
introduces BE using broker to scan for HMS catalog.
   
   In real scenarios, it appears that there is a memory leak of broker 
inputStreams. The current timeout detection is targeted at clients and is not 
applicable in broker scan scenarios (as there will always be requests from 
clients). As long as the inputStream is not properly closed, it will remain in 
memory
   <img width="1622" alt="image" 
src="https://github.com/apache/doris/assets/11454734/1b77bd49-724e-436b-b7af-b5ca5603be9d";>
   
   <!--Describe your changes.-->
   
   This pr introduces 2 broker conf:
   1. `enable_input_stream_expire_check`: which indicates whether enable 
inputStream expire check.
   2. `input_stream_expire_seconds`: which indicates the timeout seconds for 
inputStream since last update.
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[[email protected]](mailto:[email protected]) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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