fix(namespace): allow create_branch bootstrap on managed tables#7415
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geruh wants to merge 2 commits into
Open
fix(namespace): allow create_branch bootstrap on managed tables#7415geruh wants to merge 2 commits into
geruh wants to merge 2 commits into
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create_table_version resolves a branch via resolve_branch_for_commit: a branch chain accepts a commit when the BranchContents ref already exists or when the chain has no committed versions yet (the create_branch bootstrap, whose first commit precedes its ref). A chain with versions but no ref is a zombie and stays rejected. Adds test_create_branch_on_managed_dataset_succeeds; managed zombie rejection through create_table_version is already covered by test_branch_ops_reject_zombie_branch. Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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dantasse
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Jun 23, 2026
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Cool, looks like a good solution to me!
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This PR picks up on the work in #7403 by @dantasse.
create_branchon managed tables callscreate_table_versionbefore_refs/branches/<branch>.jsonexists, andresolve_branch_locationrequires that ref. Bootstrap commit fails.create_table_versionnow goes throughresolve_branch_for_commitinstead check the ref first, and if it's missing only allow the commit when the branch chain has no versions yet. Versions without a ref still get rejected (zombie).create_branch("exp")used to fail on the first commit becausecreate_table_versionlooked for_refs/branches/exp.jsonbefore phase 2 wrote it.Testing
test_create_branch_on_managed_dataset_succeeds.test_branch_ops_reject_zombie_branch.