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LANGUAGE_S_LARGE_WORD
Word breaker encountered an oversized word
LANGUAGE_S_LARGE_WORD is HRESULT 268161 (0x00041781) from Indexing Service. AllStat describes it as “Word larger than maximum length; May be truncated by word sink.” The severity bit indicates a nonfailure result, but the value carries a specific condition that must not be collapsed into plain S_OK.
In the legacy Indexing Service or IFilter pipeline, this result means that word larger than maximum length; May be truncated by word sink. The application should preserve it until it has validated the exact condition represented by this return value.
Where the status is encountered
- Legacy Indexing Service catalog processing; log the exact method and object state instead of interpreting the constant outside that contract.
- IFilter text and property extraction; log the exact method and object state instead of interpreting the constant outside that contract.
- Search enumeration, scan scheduling, or catalog administration; log the exact method and object state instead of interpreting the constant outside that contract.
Because it is informational, a language binding may expose it as success and hide the symbolic distinction. Keep the original HRESULT available until the code-specific branch has run.
What must be true before accepting it
Verify that the truncation or rejection policy preserves deterministic tokenization and does not create misleading searchable terms. The documented condition must be demonstrated so it is not mistaken for an unrelated success state.
Any state transition preceding it must be included in rollback, continuation, and retry planning.
Evidence and telemetry
- preserve language and word-breaker CLSID.
- preserve original character length.
- preserve retained token length.
- preserve token offsets.
- preserve surrounding source text or hash.
Also record language_s_large_word_operation, language_s_large_word_state_before, language_s_large_word_state_after, UTC time, process and thread identifiers, component version, and a correlation ID. Use redacted telemetry for it, retaining only the stable technical identifiers that distinguish the operation.
Correct handling and recovery
Record original and retained lengths, apply the documented maximum, and consider a format-specific tokenizer for identifiers that legitimately exceed the limit.
Retry it only when a documented input or state has changed. Use the code-specific next action for it; avoid treating all informational HRESULT values as retry signals.
Difference from nearby results
It must be distinguished from ordinary S_OK and from failure-severity values in the same API family; its documented state changes control the next action.
Comparing it with related statuses protects the caller from applying failure recovery to normal state.
Practical scenario
A source-code document contains a generated identifier longer than the word sink limit. The indexer records truncation and stores an additional hashed keyword for exact diagnostics.
A regression test should reproduce it, assert the relevant outputs and state, then change only the decisive condition and verify the expected neighboring result or ordinary completion.
References
- Microsoft: Filter interface values — official Microsoft material used to interpret it.
- Microsoft: About Indexing Service filters
- Microsoft: Using custom filters
- Microsoft: HRESULT values
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