[jira] [Created] (HIVE-17844) Hive JDBC driver converts floats to doubles, changing values slightly

["Zoltan Ivanfi (JIRA)" <ji...@apache.org>]

Zoltan Ivanfi created HIVE-17844:
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             Summary: Hive JDBC driver converts floats to doubles, changing values slightly
                 Key: HIVE-17844
                 URL: https://issues.apache.org/jira/browse/HIVE-17844
             Project: Hive
          Issue Type: Bug
          Components: JDBC
            Reporter: Zoltan Ivanfi


When querying data through Hive's JDBC driver, float values are automatically converted to doubles and will slightly differ from values seen when directly querying the data using a textual SQL interface.

Please note that by slight difference I don't only mean additional zeroes at the end, but an actual difference in the value itself. This is a result of the float to double conversion, as discussed [here|https://stackoverflow.com/questions/17504833/why-converting-from-float-to-double-changes-the-value], for example.



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