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Deprecate namespace field in ChildWorkflowOptions#2831

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mjameswh merged 3 commits intomasterfrom
deprecate-cross-namespace-apis
Apr 7, 2026
Merged

Deprecate namespace field in ChildWorkflowOptions#2831
mjameswh merged 3 commits intomasterfrom
deprecate-cross-namespace-apis

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@mjameswh mjameswh commented Apr 7, 2026

Closes #2826

Summary

  • Deprecates ChildWorkflowOptions.Builder.setNamespace() and ChildWorkflowOptions.getNamespace()
  • These APIs enable cross-namespace child workflow execution, which has been disabled by default in Temporal Server since v1.30.1 (via the system.enableCrossNamespaceCommands dynamic config flag)
  • Follows the proto-level deprecation added in temporalio/api#751

@mjameswh mjameswh requested a review from a team as a code owner April 7, 2026 05:54
@mjameswh mjameswh enabled auto-merge (squash) April 7, 2026 16:37
@mjameswh mjameswh merged commit 187b778 into master Apr 7, 2026
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@mjameswh mjameswh deleted the deprecate-cross-namespace-apis branch April 7, 2026 18:11
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@maciejdudko maciejdudko maciejdudko approved these changes

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Deprecate namespace fields on cross-namespace workflow command options

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@mjameswh @maciejdudko