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Fix index clear #463

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Fix index clear #463

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@dfroger
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@dfroger dfroger commented Jan 12, 2026

fixes #460

@dfroger-idnow
doc: add note for stable pagination
6c9b330
@dfroger-idnow
added support to cluster to .info()
5362d1d
@dfroger-idnow
extract ._delete_batch() from .clear()
242bee2
@dfroger-idnow
fix index.clear()
ca62681 
Before: the `.clear()` algorithm is wrong:

1. Suppose they are 2200 documents. The first 500 are deleted:

    0        1000      2000
    |        |         |
    xxxxx-----------------
    |   |
    |   index + limit
    index

2. There are now 1700 documents, and the next pagination query wrongly
   skips the first 500 documents, and remove from 500 to 1000:

    0        1000
    |        |
    -----xxxxx-------
         |   |
         |   index + limit
         index

3. There are now 1200 documents, and the next pagination query wrongly
   skips the first 1000 documents, and remove from 1000 to 1200:

    0        1000
    |        |
    ----------xx

=> Only 1200 of the 2200 documents are remove, and 1000 documents remain.

After: 500 documents are deleted in loop until there is nothing to
delete (with a security condition on the initial documents number, in
case of concurrent insertions).
@abrookins
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abrookins commented Jan 15, 2026

Thanks for this fix, @dfroger! You've been doing great work on redis-vl-python.

The approach looks solid - switching from offset-based pagination to always-query-from-zero makes sense for a destructive operation like clear(). The cluster support additions are also welcome.

A couple things that would seal the deal:

  1. CI is failing on import sorting - looks like a quick fix needed for check-sort-import

  2. Test coverage for the actual clear() bug - The new tests cover info() on cluster, but it would be great to have a test that directly validates the fix for issue AsyncSearchIndex.clear() does not remove all indexed documents with paginated delete #460:

    • Create N documents
    • Call clear()
    • Verify count is 0

  3. Minor: there's a small typo "recordrecords" in one of the docstrings (line 722)

Once those are addressed, this should be good to go! 🚀

@dfroger
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dfroger commented Jan 15, 2026

Thanks @abrookins for the feedback!

I think I could fix the 3 points at the beginning of next week. Looking forward!

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AsyncSearchIndex.clear() does not remove all indexed documents with paginated delete

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