)]}' { "commit": "8b8a2e65913081e7bc930dc56edfb0aa2db59738", "tree": "5f35c525f135034f981755d37f933f2455009114", "parents": [ "ad4957a216f057e684bb24ef5ce61d300759775e" ], "author": { "name": "Ian (Hee) Cha", "email": "heec@google.com", "time": "Wed Sep 30 21:43:38 2026 +0000" }, "committer": { "name": "GitHub", "email": "noreply@github.com", "time": "Wed Sep 30 21:43:38 2026 +0000" }, "message": "[9.3.0] Bust caches for rewound actions (#31300) (#31420)\n\n### Description\n\nWhen an action is rewound, it needs to bust both intra-build Bazel\ncaches as well as remote caches to ensure that the rewinding is\neffective:\n\n* When a remote cache doesn\u0027t verify that the `ActionResult`s it returns\nreference existing CAS blobs, rewinding can get into a loop and fail\nwhen the maximum number of retries is exhausted.\n`knownMissingCasDigests` handled this for build rewinding, but by design\ncan\u0027t accommodate intra-build recovery (as observed in\nhttps://github.com/bazelbuild/bazel/pull/31251). Instead, just disable\nremote caching for rewound actions until a better signal is available\n(see the TODOs and https://github.com/bazelbuild/remote-apis/pull/386).\n* Bazel\u0027s upload deduplication and caching could result in an action\nthat\u0027s been rewound multiple times not reuploading its local outputs.\nSuch caches and deduplication are now ignored for rewound actions.\n\n`LostInputsEvent` and `knownMissingCasDigests` remain in use only for\nthe legacy whole-invocation retry path when action rewinding is\ndisabled. The extra wiring required to propagate `LostInputsEvent` for a\nrewound action has been removed.\n\n### Motivation\n\n### Build API Changes\n\nNo\n\n### Checklist\n\n- [x] I have added tests for the new use cases (if any).\n- [ ] I have updated the documentation (if applicable).\n\n### Release Notes\n\nRELNOTES: None\n\nCloses #31300\n\n\nCOPYBARA_INTEGRATE_REVIEW\u003dhttps://github.com/bazelbuild/bazel/pull/31300\nfrom fmeum:fix-missing-cas-digest-lifecycle\n9055476e5fb1a2af007bb6d33077af4b7099fe44 PiperOrigin-RevId: 990587446\nChange-Id: I8e14f5bea2fbfb584756e7e16ccd925f8d57c945\n\n\u003c!--\nThank you for contributing to Bazel!\nPlease read the contribution guidelines: https://bazel.build/contribute\n--\u003e\n\n### Description\n\u003c!--\nPlease provide a brief summary of the changes in this PR.\n--\u003e\n\n### Motivation\n\u003c!--\nWhy is this change important? Does it fix a specific bug or add a new\nfeature?\nIf this PR fixes an existing issue, please link it here (e.g. \"Fixes\n#1234\").\n--\u003e\n\n### Build API Changes\n\u003c!--\nDoes this PR affect the Build API? (e.g. Starlark API, providers,\ncommand-line flags, native rules)\nIf yes, please answer the following:\n1. Has this been discussed in a design doc or issue? (Please link it)\n2. Is the change backward compatible?\n3. If it\u0027s a breaking change, what is the migration plan?\n--\u003e\n\nNo\n\n### Checklist\n\n- [ ] I have added tests for the new use cases (if any).\n- [ ] I have updated the documentation (if applicable).\n\n### Release Notes\n\n\u003c!--\nIf this is a new feature, please add \u0027RELNOTES[NEW]: \u003cdescription\u003e\u0027\nhere.\nIf this is a breaking change, please add \u0027RELNOTES[INC]: \u003creason\u003e\u0027 here.\nIf this change should be mentioned in release notes, please add\n\u0027RELNOTES: \u003creason\u003e\u0027 here.\n--\u003e\n\nRELNOTES: None\n\nCommit\nhttps://github.com/bazelbuild/bazel/commit/f653dd6d08351de86caafc684af6ed6abc975df8\n\nCo-authored-by: Fabian Meumertzheim \u003cfabian@meumertzhe.im\u003e", "tree_diff": [ { "type": "modify", "old_id": "384b4cdfd946a13bc045b3b5ce6c82f1dc099f9a", "old_mode": 33188, "old_path": "src/main/java/com/google/devtools/build/lib/remote/ChunkedBlobUploader.java", "new_id": "13de1810c56f72a38a32345f446527ddc970c7bf", 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