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  1. Spark
  2. SPARK-34727

Difference in results of casting float to timestamp

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.2.0
    • 3.1.2, 3.2.0
    • SQL

    Description

      The code below portraits the issue:

      spark-sql> CREATE TEMP VIEW v1 AS SELECT 16777215.0f AS f;
      spark-sql> SELECT * FROM v1;
      1.6777215E7
      spark-sql> SELECT CAST(f AS TIMESTAMP) FROM v1;
      1970-07-14 07:20:15
      spark-sql> CACHE TABLE v1;
      spark-sql> SELECT * FROM v1;
      1.6777215E7
      spark-sql> SELECT CAST(f AS TIMESTAMP) FROM v1;
      1970-07-14 07:20:14.951424
      

      The result from the cached view 1970-07-14 07:20:14.951424 is different from un-cached view 1970-07-14 07:20:15.

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              maxgekk Max Gekk
              maxgekk Max Gekk
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                Updated:
                Resolved: