Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗

Steps

Ensure the source branch contains the commits you want to merge
Using the Nessie CLI: MERGE BRANCH my_branch INTO main
Using the REST API: send POST /api/v2/trees/main/history/merge with a JSON body specifying fromRefName (the source branch) and optionally fromHash
Inspect the merge result; Nessie performs a content-key-level merge and reports conflicts if the same key was modified on both branches
Resolve conflicts manually if reported, then re-attempt the merge with the conflict resolution mode set (e.g., FORCE or per-key resolution)

Known gotchas

By default Nessie's merge is not a fast-forward; it creates a merge commit on main even if the source branch is a direct ancestor
Nessie merges at the content-key level (table identity), not at the file level; two branches that appended different snapshots to the same table will produce a key conflict
The --force (-f) flag bypasses conflict detection and should be used carefully; data loss can result if conflicting content keys are overwritten blindly

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Merge a Nessie branch into main

Steps

Known gotchas

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