morrySnow opened a new pull request, #21168:
URL: https://github.com/apache/doris/pull/21168

   ## Proposed changes
   
   Issue Number: close #xxx
   
   <!--Describe your changes.-->
   
   this PR
   1. refactor physical properties, property deriver and property regular 
   to ensure Nereids could generate plan with sufficent PhysicalDistribute.
   2. refactor PhyscialPlanTranslator to ensure all ExchangeNode generated
   by PhysicalDistribute, except CTEConsumer. We will refactor all cte
   related node later. 
   
   the detail changes of this PR:
   1. update DistributionSpec of physical properties:
   - Any: random distribution, used in output and require
   - StorageAny: random distribution but constrained by where the data is 
stored, used in output
   - ExecutionAny: random distribution to present random shuffle, used in output
   - Gather: gather distribution, used in output and require
   - StorageGather: gather distribution but constrained by where the data is 
stored, used in output
   - Replicated: broadcast distribution
   - Hash: bucket distribution
   
   2. update shuffle type of DistributionSpecHash
   - REQUIRE: used in require
   - NATURAL: distribution as storage engine hash algorithm, constrained by 
where the data is stored
   - STORAGE_BUCKETED: distribution as storage engine hash algorithm
   - EXECUTION_BUCKETED: distribution as execution engine hash algorithm
   
   3. update HideOneRowRelationUnderSetOperation to 
MergeOneRowRelationIntoSetOperation
   
   4. update property deriver of SetOperation to ensure suitable 
PhysicalDistribute be added
   at top and below of SetOperation
   
   5. refactor PhysicalPlanTranslator to ensure no unplanned exchange node will 
be added 
   
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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