Simon Willnauer created LUCENE-9478:
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Summary: DWPTDeleteQueue leaks memory
Key: LUCENE-9478
URL: https://issues.apache.org/jira/browse/LUCENE-9478
Project: Lucene - Core
Issue Type: Bug
Affects Versions: 8.6.1, master (9.0), 8.7
Reporter: Simon Willnauer
We introduced a broken behavior that leaks memory in DWPTDeleteQueue recently
(LUCENE-9304) The line
[here|https://github.com/apache/lucene-solr/blob/18af6325ed98b50c23a1f026ab9d05f17039c731/lucene/core/src/java/org/apache/lucene/index/DocumentsWriterDeleteQueue.java#L594-L596]
tries to be smart and even adds a comment that the current impl is safe but it
isn't if you reference a final member in a lambda it references _this_ which
holds on to the object. I think we need to do a quick 8.6.2 for this.
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