docs: troubleshooting chunk_overlap on MarkdownHeaderTextSplitter
#1061
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
github-actions
bot
added
langchain
sachinML
force-pushed
the
docs/chunk-overlap-troubleshooting
branch
from
622d7a5 to
4e838d8
Compare
mdrxy
added a commit
to anjaliratnam-msft/docs
that referenced
this pull request
Oct 22, 2025
…angchain-ai#1061) Refs #30200 - Use `split_documents(docs)` after header-based splitting (preserves per-section metadata; overlap applied per document). - Overlap appears only when a single section exceeds `chunk_size`. - Overlap does not cross section/document boundaries. - Consider `strip_headers=True` to avoid a tiny header-only chunk; keep `""` as a fallback separator if text lacks newlines/spaces. --------- Co-authored-by: Mason Daugherty <[email protected]> Co-authored-by: Mason Daugherty <[email protected]>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Refs #30200
split_documents(docs)after header-based splitting (preserves per-section metadata; overlap applied per document).chunk_size.strip_headers=Trueto avoid a tiny header-only chunk; keep""as a fallback separator if text lacks newlines/spaces.