klsince opened a new pull request, #14516:
URL: https://github.com/apache/pinot/pull/14516

   Currently, updating segment's tier (a field in segment ZK metadata) and 
rebalancing table call TierSegmentSelectors to decide if a segment belongs to a 
specific tier separately. But tier selectors like TimeBasedTierSegmentSelector 
may return different tiers for a segment between the two steps, as the tier 
assignment is decided by comparing segment data time vs. current time, which 
keeps changing. This caused segment to be relocated and loaded on new servers, 
but with wrong segment tier.  
   
   This PR takes the segment tier assignments as calculated when updating 
segment's tier, and pass it to table rebalancer to use to make segment tier 
decision consistent. 


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