Sam Rohde created BEAM-8738:
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Summary: Revisit timestamp and duration representation
Key: BEAM-8738
URL: https://issues.apache.org/jira/browse/BEAM-8738
Project: Beam
Issue Type: Improvement
Components: beam-model
Reporter: Sam Rohde
The current proto representation of timesetamp and durations in Beam is either
raw int64s or the well-known Google protobuf types "google.protobuf.timestamp"
and "google.protobuf.duration". Apache Beam uses int64 MAX and MIN as sentinel
values for an +inf watermark and -inf watermark. However, the
google.protobuf.timestamp is compliant with RFC3339, meaning it can only
represent date-times between 0001-01-01 and 9999-12-31. This is not the same as
the int64 MAX and MIN representation. The questions remain:
* What should the timestamp and duration representations be?
* What units should the timestamps and duration be? Nanos? Micros?
* What algebra is allowed when dealing with timestamps and durations? What is
needed?
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