{"record":{"id":"a972dbc02d0538f5","repo":"run-llama/llama_index","slug":"got-a-larger-chunk-overlap-chunk-overlap-than","errorCode":null,"errorMessage":"Got a larger chunk overlap ({chunk_overlap}) than chunk size ({chunk_size}), should be smaller.","messagePattern":"Got a larger chunk overlap \\((.+?)\\) than chunk size \\((.+?)\\), should be smaller\\.","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"llama-index-core/llama_index/core/node_parser/text/sentence.py","lineNumber":84,"sourceCode":"    _sub_sentence_split_fns: List[Callable] = PrivateAttr()\n\n    def __init__(\n        self,\n        separator: str = \" \",\n        chunk_size: int = DEFAULT_CHUNK_SIZE,\n        chunk_overlap: int = SENTENCE_CHUNK_OVERLAP,\n        tokenizer: Optional[Callable] = None,\n        paragraph_separator: str = DEFAULT_PARAGRAPH_SEP,\n        chunking_tokenizer_fn: Optional[Callable[[str], List[str]]] = None,\n        secondary_chunking_regex: Optional[str] = CHUNKING_REGEX,\n        callback_manager: Optional[CallbackManager] = None,\n        include_metadata: bool = True,\n        include_prev_next_rel: bool = True,\n        id_func: Optional[Callable] = None,\n    ):\n        \"\"\"Initialize with parameters.\"\"\"\n        if chunk_overlap > chunk_size:\n            raise ValueError(\n                f\"Got a larger chunk overlap ({chunk_overlap}) than chunk size \"\n                f\"({chunk_size}), should be smaller.\"\n            )\n        id_func = id_func or default_id_func\n        callback_manager = callback_manager or CallbackManager([])\n        super().__init__(\n            chunk_size=chunk_size,\n            chunk_overlap=chunk_overlap,\n            secondary_chunking_regex=secondary_chunking_regex,\n            separator=separator,\n            paragraph_separator=paragraph_separator,\n            callback_manager=callback_manager,\n            include_metadata=include_metadata,\n            include_prev_next_rel=include_prev_next_rel,\n            id_func=id_func,\n        )\n        self._chunking_tokenizer_fn = (\n            chunking_tokenizer_fn or split_by_sentence_tokenizer()","sourceCodeStart":66,"sourceCodeEnd":102,"githubUrl":"https://github.com/run-llama/llama_index/blob/afd0fef371831f9bda13e5af7167cf4e981278ab/llama-index-core/llama_index/core/node_parser/text/sentence.py#L66-L102","documentation":"Error \"Got a larger chunk overlap ({chunk_overlap}) than chunk size ({chunk_size}), should be smaller.\" thrown in run-llama/llama_index.","triggerScenarios":"Thrown at llama-index-core/llama_index/core/node_parser/text/sentence.py:84 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Set chunk_overlap smaller than chunk_size.","Increase chunk_size or decrease chunk_overlap in SentenceSplitter."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"afd0fef371831f9bda13e5af7167cf4e981278ab","analyzedAt":"2026-08-15T05:42:58.429Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}