Search is not working while migrating Lucene 3.6.2 to 8.7.0 [LUCENE-9903]

We are upgrading the Lucene version from 3.6.2 to 8.7.0 version, we are facing the search issue, once request is reach to search method then response is not coming out  the execution flow is blocked by search method

public void collect(IndexSearcher is) throws CorruptIndexException,public void collect(IndexSearcher is) throws CorruptIndexException, IOException {

TopFieldCollector collector = TopFieldCollector.create(TopFieldCollector collector = TopFieldCollector.create( reverse ? reverseSort : sort, numr, val);

is.setSimilarity(new ClassicSimilarity());

is.search(query, numr); 

}

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Migrated from [LUCENE-9903](https://issues.apache.org/jira/browse/LUCENE-9903) by lakshman, updated Apr 05 2021

Start with the collect method shown in the issue, especially the TopFieldCollector setup and the blocking is.search(query, numr) call. Reproduce the migration from Lucene 3.6.2 to 8.7.0 and inspect whether the search call completes; done means identifying the cause of the blocked execution and confirming that the request returns normally.

Written by the indexing model from the issue text.