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  1. Beam
  2. BEAM-8738

Revisit timestamp and duration representation

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    Details

    • Type: Improvement
    • Status: Triage Needed
    • Priority: P3
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: beam-model
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      Description

      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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            • Assignee:
              Unassigned
              Reporter:
              rohdesam Sam Rohde
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              Dates

              • Created:
                Updated: