[PR] Add validation to check for non-ints from partitionfns [beam]

Fri, 15 Aug 2025 09:22:56 -0700 


hjtran opened a new pull request, #35881:
URL: https://github.com/apache/beam/pull/35881

   A user ran into a confusing scenario where their partition function that 
returned Trues/Falses ended up "filtering" everything out of their input 
pcollection.
   
   The `Partition` transform checks for indexes that are outside of the 
partition range but `bool`s end up looking like `0`s and `1`s.
   
   I've added a type check to make sure bools and other non-ints aren't 
returned from the partitionfn
   
   
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