[jira] [Created] (THRIFT-2473) _isset entries shouldn't be generated for non-optional fields

["Vitali Lovich (JIRA)" <ji...@apache.org>]

Vitali Lovich created THRIFT-2473:
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             Summary: _isset entries shouldn't be generated for non-optional fields
                 Key: THRIFT-2473
                 URL: https://issues.apache.org/jira/browse/THRIFT-2473
             Project: Thrift
          Issue Type: Bug
            Reporter: Vitali Lovich


There's quite a bit of memory overhead (4 bytes per field) that's wasted on every single type.  The __isset field is unused by the thrift type for fields not annotated optional.

Additionally, it causes confusion in program code since people never know whether or not the __isset struct can be checked for a particular field or not (e.g. for non-optional fields it would never get set normally unless you deserialized it).



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