jihoonson commented on pull request #12250:
URL: https://github.com/apache/druid/pull/12250#issuecomment-1042098496


   > Does this really need to be behind a featureFlag? That seems like it's 
just adding config for not too much value? What's the feature flag trying to 
protect from, especially if it defaults to true?
   
   @imply-cheddar I added it just in case where there is a bug in my code. I 
think its coverage is quite good, but I don't trust my code in general 
:slightly_smiling_face: I want to avoid an extreme case where people cannot 
read their segments because of some bug I introduced and have to downgrade 
their cluster to recreate their segments. With having a feature flag, they can 
just recreate segments with no downgrade. Code-wise, the feature flag doesn't 
add much code as most of them are needed to not support Hadoop and Tranquility. 
We may add this feature for Hadoop in the future, but I'm sure we won't do it 
for Tranquility.


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