Fix flaky test in testApproximateRangeWithSizeOverDefault by adjusting totalHits assertion logic #16433
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…tasks index (opensearch-project#16060) - Fixed issue where `.tasks` index failed to update due to StrictDynamicMappingException when a task was cancelled. - Added missing `cancellation_time_millis` and `resource_stats` fields to `task-index-mapping.json`. - Ensured proper task result storage by updating the mappings. - Changed the version in the meta field from 4 to 5 to reflect the updated mappings. Signed-off-by: inpink <inpink@kakao.com>
…ing totalHits assertion logic - Updated the test to account for Lucene's behavior where `IndexSearcher.search()` may return `GREATER_THAN_OR_EQUAL_TO` for totalHits when the number of matches exceeds 1000. - Added logic to check if `totalHits.relation` is `EQUAL_TO`. If so, assert that the count is exactly 11000. Otherwise, ensure the count is at least 11000 and within the allowed upper limit (`maxHits`). - This change prevents intermittent test failures caused by Lucene’s performance optimizations.
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I have reopened this under #16434. |
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❌ Gradle check result for ac01491: FAILURE Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change? |
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Description
This PR addresses an issue in the
testApproximateRangeWithSizeOverDefaultmethod ofApproximatePointRangeQueryTests, where the test would occasionally fail due to how Lucene handles total hits.By default,
search()in Lucene'sIndexSearcherprovides an accurate count for up to 1000 hits.Beyond this threshold, Lucene may return a lower bound using GREATER_THAN_OR_EQUAL_TO for performance reasons (refer to the Lucene IndexSearcher documentation.)
In
testApproximateRangeWithSizeOverDefault, the search range includes 12,001 documents, and the test would sometimes fail whenGREATER_THAN_OR_EQUAL_TOoccurred during the search.Changes:
EQUAL_TO, the test checks for an exact count of 11000.GREATER_THAN_OR_EQUAL_TO, the test ensures the hits are no less than 11000 and within the upper bound (maxHits).This issue is similar to OpenSearch PR #4270. I resolved it in a similar way. Special thanks to @dbwiddis for the valuable guidance.
Related Issues
Related #15807
Check List
API changes companion pull request created, if applicable.Public documentation issue/PR created, if applicable.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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