Ben Hollis created SPARK-58300:
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Summary: Add from_protobuf option to keep Timestamp/Duration as
struct<seconds, nanos>
Key: SPARK-58300
URL: https://issues.apache.org/jira/browse/SPARK-58300
Project: Spark
Issue Type: Improvement
Components: Protobuf
Affects Versions: 4.3.0
Reporter: Ben Hollis
`from_protobuf` always maps `google.protobuf.Timestamp` -> `TimestampType` and
`google.protobuf.Duration` -> `DayTimeIntervalType`. This is Spark's
well-known-type conversion and there is currently no way to turn it off.
This adds a `from_protobuf` reader option
`convert.timestamp.duration.to.native` (default `true`, preserving today's
behavior). When set to `false`, both well-known types fall through to the
generic message path and deserialize as their raw proto shape `struct<seconds:
bigint, nanos: int>`.
Motivation: a consumer whose downstream schema was defined against the
\{seconds, nanos} struct representation (e.g. a table populated by a different
decode path) and must stay stable, or that needs the exact seconds/nanos rather
than a microsecond-truncated interval/timestamp.
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