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Add Event Groups in Core SDK#1308

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event-groups-feature
Draft

Add Event Groups in Core SDK#1308
mjameswh wants to merge 1 commit into
mainfrom
event-groups-feature

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@mjameswh

@mjameswh mjameswh commented Jun 2, 2026

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What was changed

Introduces support for Event Groups in Core SDK. Surfacing that API properly in Rust SDK will be done in a distinct PR.

More specifically, this PR introduces the following two critical changes:

  • Copy of the event_group_markers field from lang's Command → server's Command.
  • Copy of the event_id or update_id field from server's HistoryEvent → lang's Job.

Why?

Event Groups is a new form of metadata that allows regrouping of logically related Workflow Events, according to user-defined or system-inferred criteria, providing users with improved visibility, analysis, and debugging capabilities.

Related PRs in other repositories

@mjameswh mjameswh force-pushed the event-groups-feature branch from 54df312 to f1971c4 Compare June 9, 2026 23:32
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