apache / apache/lucene

Not all Filters implement equals and hash code [LUCENE-5557]

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legacy-jira-priority:Major module:core/search type:bug
Dominant language
Java
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Description

It appears that not all of org.apache.lucene.search.Filter classes implement equals and hash code. The ones I have seen that don't are:

org.apache.lucene.search.ChainedFilter
org.apache.lucene.search.FieldCacheTermsFilter

There are probably other ones out there as well.

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Migrated from [LUCENE-5557](https://issues.apache.org/jira/browse/LUCENE-5557) by John Mark

Contributor guide

Open the contributing guide

Research direction

Start by reviewing org.apache.lucene.search.ChainedFilter and FieldCacheTermsFilter, then inspect the other org.apache.lucene.search.Filter classes to identify which lack equals and hashCode. The work is done when the affected Filter classes implement both methods consistently; the issue does not name a test file, so determine the relevant existing tests while investigating.

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
Mostly clear
Newbie friendliness
35/100

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