vidyasankarv commented on PR #383:
URL: https://github.com/apache/datafusion-comet/pull/383#issuecomment-2120433348

   https://github.com/apache/datafusion-comet/suites/23883332179/logs?attempt=2
   
   In the logs for ubuntu-latest/java 17-spark-3.4-scala-2.12/java - which 
included the fuzz test dates - all return cast values on comet side are showing 
null.
   
   Additionally sample dates that pass otherwise without fuzz test 
https://github.com/apache/datafusion-comet/pull/383/files#diff-41ecdd113d7a7afe33447e34f1ff0b5ed3033a89bfbcefa9e7e259d7a6e4daecR577-R585
  also report as null on Comet side when the fuzz tests are included.
   
   
https://github.com/apache/datafusion-comet/actions/runs/9123082449/job/25132235801
   
   ```
     ![262142-01-01,2142-01-01]               [262142-01-01,null]
     ![262142-01-01 ,2142-01-01]              [262142-01-01 ,null]
     ![262142-01-01T ,2142-01-01]             [262142-01-01T ,null]
     ![262142-01-01T 123123123,2142-01-01]    [262142-01-01T 123123123,null]
      [263,null]                              [263,null]
   ```
   if you search for `262142-01-01` in the logs you can see it reports as 
failing on lines 14035 to 14038 as above
   
   similarly if you also search  for dates `-262143-12-31` on lines 10167 to 
10171 
   ```
      [--262143-12-31,null]                   [--262143-12-31,null]
      [--262143-12-31T 1234 ,null]            [--262143-12-31T 1234 ,null]
     ![-262143-12-31,2144-12-31]              [-262143-12-31,null]
     ![-262143-12-31 ,2144-12-31]             [-262143-12-31 ,null]
     ![-262143-12-31T,2144-12-31]             [-262143-12-31T,null]
     ![-262143-12-31T ,2144-12-31]            [-262143-12-31T ,null]
     ![-262143-12-31T 123123123,2144-12-31]   [-262143-12-31T 123123123,null]
   ```
   the return value of comet is reported as null
   
   I have spent a fair time trying to understand why this is happening 
   and also added some more samples from fuzzy dates into my current unit tests 
in rust tests and CometCastSuite
   all of them are passing.
   
   So I might need some help in trying to identify the issue with fuzz test.
   Apologies for taking your time on this again.
   
   


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