Bug fix/bts 2152 fix overfetch input on parallel traversals #21808
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jbajic
approved these changes
Jun 24, 2025
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| * Fix BTS-2152 Overfetch input on prallel Traversals. For queries like this: | |||
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Suggested change
| * Fix BTS-2152 Overfetch input on prallel Traversals. For queries like this: | |
| * Fix BTS-2152 Overfetch input on parallel Traversals. For queries like this: |
Co-authored-by: Jure Bajic <jure.bajic94@gmail.com>
Co-authored-by: Jure Bajic <jure.bajic94@gmail.com>
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Scope & Purpose
Fix BTS-2152 Overfetch input on prallel Traversals. For queries like this:
FOR x IN largeCollection
FOR v IN 1 OUTBOUND x edges {parallelism: 4}
LIMIT 10
RETURN v
Before this bugfix we would always enumerate largeCollection in full,
even though a small portion of the collection would have sufficed.
This is now handled better. We now enumerate only the necessary amount
of batches required to fulfill the limit.
This also improves cluster queries (replace the traversal with another FOR loop)
which had the same behaviour and are now enumerating less unused
intermediate results.
Checklist
Related Information
(Please reference tickets / specification / other PRs etc)