jtao15 opened a new issue #6548:
URL: https://github.com/apache/incubator-pinot/issues/6548


   Once a segment is completed, either converted from consuming to online in 
real-time or uploaded in offline, the start/end time in zk metadata is updated 
based on the raw data.
   For SDF, start/end time is stored in millis, and the conversion is done by 
DateTimeFormatter (default time zone: local). 
   
   For broker time boundary management, the time millis are converted back to 
SDF to compute the time boundary. For broker time segment pruner, the query 
time condition is parsed to time millis, and compared with segment metadata. 
These conversions are done by TimeFormatSpec (default time zone: UTC).
   
   If Pinot clusters are in time zones other than UTC, the time boundary will 
be shifted accordingly, and the time pruner will filter wrong segments instead 
of expected.
   


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