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https://issues.apache.org/jira/browse/OAK-12051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Mueller resolved OAK-12051.
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Fix Version/s: 2.0.0
Resolution: Fixed
> Sorting Unions by Score: NullPointerException
> ---------------------------------------------
>
> Key: OAK-12051
> URL: https://issues.apache.org/jira/browse/OAK-12051
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: query
> Reporter: Marvin
> Assignee: Thomas Mueller
> Priority: Minor
> Fix For: 2.0.0
>
>
> With ticket OAK-11949 we introduced the feature that union queries are sorted
> by score, instead of simply concatenating them. However, turning on the
> feature toggle causes NullPointerExceptions in some rare cases. The problem
> occurs if there is a score column, but accessing a score of that column
> returns Null. This can happen if, for example, there is a union between three
> queries, of which at least one has scores, and at least one doesn't have, and
> those two results are merged first.
> {code:java}
> This happens when the product tests make the following request
> /libs/granite/security/search/authorizables.json?offset=0&query=%7B"condition"%3A%5B%7B"named"%3A"testGroup07fe1bae-63c5-4fb1-8924-a345f2f4451c"%7D%5D%7D
> and fails consistently causing
> CreatePageAsAuthorUserIT#testCreatePageAsAuthor to fail. Query that
> fails:[rep:Authorizable] as [a] /* property authorizableId indexDefinition:
> /oak:index/authorizableId values:
> 'testGroup07fe1bae-63c5-4fb1-8924-a345f2f4451c' estimatedCost: 2.0 */ union
> [rep:Authorizable] as [a] /* property principalName indexDefinition:
> /oak:index/principalName values:
> 'testGroup07fe1bae-63c5-4fb1-8924-a345f2f4451c' estimatedCost: 2.0 */ union
> [rep:Authorizable] as [a] /* lucene:authorizables indexDefinition:
> /oak:index/authorizables estimatedEntries: 167 luceneQuery: :ancestors:/home
> */ {code}
>
> {code:java}
> [52.177.162.196 [1767767494687] GET
> /libs/granite/security/search/authorizables.json HTTP/1.1]
> org.apache.sling.servlets.resolver.internal.SlingServletResolver Original
> error class java.lang.NullPointerException java.lang.NullPointerException:
> Cannot invoke
> "org.apache.jackrabbit.oak.api.PropertyValue.getValue(org.apache.jackrabbit.oak.api.Type)"
> because "scoreValue" is null at
> org.apache.jackrabbit.oak.query.UnionQueryImpl.getScoreFromRow(UnionQueryImpl.java:578)
> [org.apache.jackrabbit.oak-core:1.88.0.T20251029163355-5d5086d] at
> org.apache.jackrabbit.oak.query.UnionQueryImpl$2.compare(UnionQueryImpl.java:564)
> [org.apache.jackrabbit.oak-core:1.88.0.T20251029163355-5d5086d] at
> org.apache.jackrabbit.oak.query.UnionQueryImpl$2.compare(UnionQueryImpl.java:561)
> [org.apache.jackrabbit.oak-core:1.88.0.T20251029163355-5d5086d] {code}
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