{"record":{"id":"db5e73fe0ecb3303","repo":"redis/redis-py","slug":"debug-segfault-is-intentionally-not-implemented-in","errorCode":null,"errorMessage":"DEBUG SEGFAULT is intentionally not implemented in the client. For more information, see https://redis.io/commands/debug-segfault","messagePattern":"DEBUG SEGFAULT is intentionally not implemented in the client\\. For more information, see https://redis\\.io/commands/debug-segfault","errorType":"exception","errorClass":"NotImplementedError","httpStatus":null,"severity":"error","filePath":"redis/commands/core.py","lineNumber":1517,"sourceCode":"    ) -> dict[str, str | int] | bytes | str: ...\n\n    @overload\n    def debug_object(\n        self: AsyncClientProtocol, key: KeyT, **kwargs\n    ) -> Awaitable[dict[str, str | int] | bytes | str]: ...\n\n    def debug_object(self, key: KeyT, **kwargs) -> (\n        dict[str, str | int] | bytes | str\n    ) | Awaitable[dict[str, str | int] | bytes | str]:\n        \"\"\"\n        Returns version specific meta information about a given key\n\n        For more information, see https://redis.io/commands/debug-object\n        \"\"\"\n        return self.execute_command(\"DEBUG OBJECT\", key, **kwargs)\n\n    def debug_segfault(self, **kwargs) -> None:\n        raise NotImplementedError(\n            \"\"\"\n            DEBUG SEGFAULT is intentionally not implemented in the client.\n\n            For more information, see https://redis.io/commands/debug-segfault\n            \"\"\"\n        )\n\n    @overload\n    def echo(self: SyncClientProtocol, value: EncodableT, **kwargs) -> bytes | str: ...\n\n    @overload\n    def echo(\n        self: AsyncClientProtocol, value: EncodableT, **kwargs\n    ) -> Awaitable[bytes | str]: ...\n\n    def echo(self, value: EncodableT, **kwargs) -> (bytes | str) | Awaitable[\n        bytes | str\n    ]:","sourceCodeStart":1499,"sourceCodeEnd":1535,"githubUrl":"https://github.com/redis/redis-py/blob/6a6b581b48225afa0b76912d1028c6035baee932/redis/commands/core.py#L1499-L1535","documentation":"Raised by debug_segfault() (redis/commands/core.py:1517) which is a stub that unconditionally raises NotImplementedError. DEBUG SEGFAULT deliberately crashes the Redis server process for testing; shipping it on a client object would be a footgun, so the library refuses it. No arguments are accepted.","triggerScenarios":"Calling r.debug_segfault() or r.debug_segfault(anything). Any call raises immediately and never contacts the server.","commonSituations":"Running chaos/fault-injection tests and reaching for the python client; or exploring the DEBUG surface (note debug_object, debug_sleep, etc. ARE implemented, only segfault is blocked).","solutions":["Do not call debug_segfault() from application code","If you genuinely need to crash a test server, invoke it via redis-cli or r.execute_command(\"DEBUG\", \"SEGFAULT\") on a throwaway instance only","Use r.debug_object(key) for safe object diagnostics instead"],"exampleFix":"# before\nr.debug_segfault()\n# after\n# (remove the call; it is intentionally disabled)\n# if absolutely required for a local test instance:\n# r.execute_command(\"DEBUG\", \"SEGFAULT\")","handlingStrategy":"validation","validationCode":"# never call debug_segfault(); gate it behind an explicit flag\nif not getattr(r, \"_allow_segfault\", False):\n    raise RuntimeError(\"debug_segfault is disabled\")","typeGuard":null,"tryCatchPattern":"try:\n    r.debug_segfault()\nexcept NotImplementedError:\n    if os.environ.get(\"ALLOW_DEBUG_SEGFAULT\") == \"1\":\n        r.execute_command(\"DEBUG\", \"SEGFAULT\")","preventionTips":["Remove debug_segfault() calls from application code entirely.","If used for fault injection, restrict to disposable test instances and use redis-cli.","Remember other debug_* methods (debug_object, debug_sleep) are safe and implemented."],"tags":["debug","notimplemented","intentional","dangerous"],"backgroundTag":null,"analyzedSha":"6a6b581b48225afa0b76912d1028c6035baee932","analyzedAt":"2026-08-10T12:52:44.840Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-21T04:17:39.646Z"}