[jira] [Created] (MESOS-3345) Expand the range of integer precision when converting into/out of json.

["Joseph Wu (JIRA)" <ji...@apache.org>]

Joseph Wu created MESOS-3345:
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             Summary: Expand the range of integer precision when converting into/out of json.
                 Key: MESOS-3345
                 URL: https://issues.apache.org/jira/browse/MESOS-3345
             Project: Mesos
          Issue Type: Task
          Components: stout
            Reporter: Joseph Wu
            Assignee: Joseph Wu
            Priority: Minor


For [MESOS-3299], we added some protobufs to represent time with integer precision.  However, this precision is not maintained through protobuf <-> JSON conversion, because of how our JSON encoders/decoders convert numbers to floating point.

To maintain precision, we can:
1) Try using a {{long double}} to represent a number.
2) Add logic to stringify/parse numbers without loss when possible.

In all cases, we'll need to make sure that:
* Integers are properly stringified without loss.
* The JSON decoder parses the integer without loss.
* We have some unit tests for big (close to {{INT32_MAX}}/{{INT64_MAX}}) and small integers.



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