[jira] [Commented] (LUCENE-10431) AssertionError in BooleanQuery.hashCode()

[Uwe Schindler (Jira)]

    [ 
https://issues.apache.org/jira/browse/LUCENE-10431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17497718#comment-17497718
 ] 

Uwe Schindler commented on LUCENE-10431:
----------------------------------------

Sorry with builder pattern you can't create a BQ referring itself as clause. 😂

> AssertionError in BooleanQuery.hashCode()
> -----------------------------------------
>
>                 Key: LUCENE-10431
>                 URL: https://issues.apache.org/jira/browse/LUCENE-10431
>             Project: Lucene - Core
>          Issue Type: Bug
>    Affects Versions: 8.11.1
>            Reporter: Michael Bien
>            Priority: Major
>
> Hello devs,
> the constructor of BooleanQuery can under some circumstances trigger a hash 
> code computation before "clauseSets" is fully filled. Since BooleanClause is 
> using its query field for the hash code too, it can happen that the "wrong" 
> hash code is stored, since adding the clause to the set triggers its 
> hashCode().
> If assertions are enabled the check in BooleanQuery, which recomputes the 
> hash code, will notice it and throw an error.
> exception:
> {code:java}
> java.lang.AssertionError
>     at org.apache.lucene.search.BooleanQuery.hashCode(BooleanQuery.java:614)
>     at java.base/java.util.Objects.hashCode(Objects.java:103)
>     at java.base/java.util.HashMap$Node.hashCode(HashMap.java:298)
>     at java.base/java.util.AbstractMap.hashCode(AbstractMap.java:527)
>     at org.apache.lucene.search.Multiset.hashCode(Multiset.java:119)
>     at java.base/java.util.EnumMap.entryHashCode(EnumMap.java:717)
>     at java.base/java.util.EnumMap.hashCode(EnumMap.java:709)
>     at java.base/java.util.Arrays.hashCode(Arrays.java:4498)
>     at java.base/java.util.Objects.hash(Objects.java:133)
>     at 
> org.apache.lucene.search.BooleanQuery.computeHashCode(BooleanQuery.java:597)
>     at org.apache.lucene.search.BooleanQuery.hashCode(BooleanQuery.java:611)
>     at java.base/java.util.HashMap.hash(HashMap.java:340)
>     at java.base/java.util.HashMap.put(HashMap.java:612)
>     at org.apache.lucene.search.Multiset.add(Multiset.java:82)
>     at org.apache.lucene.search.BooleanQuery.<init>(BooleanQuery.java:154)
>     at org.apache.lucene.search.BooleanQuery.<init>(BooleanQuery.java:42)
>     at 
> org.apache.lucene.search.BooleanQuery$Builder.build(BooleanQuery.java:133)
> {code}
> I noticed this while trying to upgrade the NetBeans maven indexer modules 
> from lucene 5.x to 8.x https://github.com/apache/netbeans/pull/3558



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