Jackie-Jiang opened a new pull request, #9130:
URL: https://github.com/apache/pinot/pull/9130

   The race condition can happen in the following sequence:
   1. `updateRecord()` gets the current record location which points to a 
segment to be removed
   2. `removeSegment()` removes the keys from the segment
   3. The removed segment is released
   4. `updateRecord()` tries to read the record from the segment that is 
already released


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