viirya opened a new issue, #146:
URL: https://github.com/apache/arrow-datafusion-comet/issues/146

   ### What is the problem the feature request solves?
   
   In Spark, casting from LongType to Timestamp is to casting seconds to 
microseconds. arrow-rs's cast kernel basically simply reinterprets Int64Array 
as TimestampMicrosecondArray. So the scale is different, i.e., seconds v.s. 
microseconds.
   
   We need to add this special case into Comet's cast kernel.
   
   ### Describe the potential solution
   
   _No response_
   
   ### Additional context
   
   _No response_


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