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Fix FilterOperator to cache next element and avoid repeated consumption on hasNext() calls #3123

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merged 1 commit into from
Dec 9, 2024

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@penghuo penghuo commented Oct 25, 2024

Description

This PR addresses a bug in FilterOperator where repeated calls to hasNext() would incorrectly consume input elements. The change includes

  • Updated FilterOperator to cache the next matching element, ensuring that repeated hasNext() calls return true without advancing the input.
  • Unit Tests: Added a test case to confirm that inputPlan.next() is called only once across multiple hasNext() calls, preventing unintended input consumption.
  • IT, SELECT Origin, Dest FROM (SELECT * FROM opensearch_dashboards_sample_data_flights WHERE AvgTicketPrice > 100 GROUP BY Origin, Dest, AvgTicketPrice) AS flights WHERE AvgTicketPrice < 1000 ORDER BY AvgTicketPrice LIMIT 30

Related Issues

#3121

Check List

  • New functionality includes testing.
  • New functionality has been documented.
  • New functionality has javadoc added.
  • New functionality has a user manual doc added.
  • API changes companion pull request created.
  • Commits are signed per the DCO using --signoff.
  • Public documentation issue/PR created.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
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LGTM

@penghuo penghuo merged commit 3e2cb1d into opensearch-project:main Dec 9, 2024
15 of 16 checks passed
opensearch-trigger-bot bot pushed a commit that referenced this pull request Dec 9, 2024
…on on hasNext() calls (#3123)

Signed-off-by: Peng Huo <[email protected]>
(cherry picked from commit 3e2cb1d)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
penghuo pushed a commit that referenced this pull request Dec 9, 2024
…on on hasNext() calls (#3123) (#3199)

(cherry picked from commit 3e2cb1d)

Signed-off-by: Peng Huo <[email protected]>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
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3 participants