Jackie-Jiang commented on pull request #6843:
URL: https://github.com/apache/incubator-pinot/pull/6843#issuecomment-829743240


   We can do that. My concern around that is we usually store serialized data 
structure (such as HyperLogLog, TDigest etc.) as BYTES, and truncating the 
bytes will cause it unable to deserialize.
   I believe the reason why we want to block long strings here is that we use 
the longest string length for each entry in the string dictionary. Instead, we 
should automatically switch to var-length string dictionary when we detect 
strings of very different length.


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