KKcorps opened a new pull request, #8688:
URL: https://github.com/apache/pinot/pull/8688

   use the following `upsertConfig` inside any table config to reproduce the 
issue
   ```
         "partialUpsertStrategies":{
           "columnA": "IGNORE"
         },
         "comparisonColumn": "columnA"
   ```
   
   IMO, comparison columns should not have `IGNORE` update strategy ever since 
we need the latest value for comparison. So there should be no need for this 
patch.
   
   Primary motivation for creating is to discuss if we even need this change or 
not. If not, we should add a validation in table config and fail at the time of 
table creation itself.


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