AssertionError FlattenGraphFilter [LUCENE-8740]
- Dominant language
- Java
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Description
Our unit tests picked up an unusual AssertionError in FlattenGraphFilter which manifests itself only in very specific circumstances involving WordDelimiterGraph, StopFilter, FlattenGraphFilter and MinhashFilter.
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Migrated from [LUCENE-8740](https://issues.apache.org/jira/browse/LUCENE-8740) by Markus Jelsma, updated Dec 08 2021
Attachments: [LUCENE-8740.patch](https://apache.github.io/lucene-jira-archive/attachments/LUCENE-8740/LUCENE-8740.patch)
Linked issues:
- #9769
Contributor guide
Research direction
Start with the unit tests covering the interaction of WordDelimiterGraph, StopFilter, FlattenGraphFilter, and MinhashFilter, then review the attached LUCENE-8740.patch and linked issue #9769. Reproduce the AssertionError under the reported circumstances; done means the failure is resolved with regression coverage.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- search
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 32/100