apache / apache/lucene

Exception rising while using QueryTimeout

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#12,032 2 comments 0 reactions 0 assignees View on GitHub
type:bug
Dominant language
Java
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Description

### Description

```
import org.apache.lucene.facet.DrillDownQuery;
import org.apache.lucene.facet.DrillSideways;
import org.apache.lucene.facet.FacetsConfig;
import org.apache.lucene.facet.taxonomy.TaxonomyReader;
import org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.QueryTimeoutImpl;
import org.apache.lucene.search.CollectorManager;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.TopFieldCollector;
import org.apache.lucene.search.TopFieldDocs;
import org.apache.lucene.store.NIOFSDirectory;
import org.apache.lucene.store.SimpleFSLockFactory;
import org.junit.Test;

import java.io.IOException;
import java.nio.file.Path;

public class BugTest {

@Test
public void test() throws IOException {
TaxonomyReader taxonomyReader = new DirectoryTaxonomyReader(new NIOFSDirectory(Path.of(
"src/test/resources/fs-base/root/search/test/221031_130517/categories"), SimpleFSLockFactory.INSTANCE));
FacetsConfig facetsConfig = new FacetsConfig();

final DrillDownQuery facetedQuery = new DrillDownQuery(facetsConfig);
facetedQuery.add("dataclass", "STD"); // if we add dim

IndexReader indexReader = DirectoryReader.open(new NIOFSDirectory(Path.of(
"src/test/resources/fs-base/root/search/test/221031_130517/main")));
IndexSearcher indexSearcher = new IndexSearcher(indexReader);
indexSearcher.setTimeout(new QueryTimeoutImpl(1000000)); // and timeout

DrillSideways drillSideways = new DrillSideways(indexSearcher, facetsConfig, taxonomyReader);

final CollectorManager collectorManager =
TopFieldCollector.createSharedManager(Sort.RELEVANCE, 100, null, Integer.MAX_VALUE);

final DrillSideways.ConcurrentDrillSidewaysResult r = drillSideways.search(facetedQuery, collectorManager);
// exception is thrown
}
}
```

```
java.lang.IllegalArgumentException: maxDoc must be Integer.MAX_VALUE

at org.apache.lucene.facet.DrillSidewaysScorer.score(DrillSidewaysScorer.java:84)
at org.apache.lucene.search.TimeLimitingBulkScorer.score(TimeLimitingBulkScorer.java:68)
at org.apache.lucene.search.BulkScorer.score(BulkScorer.java:38)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:744)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:662)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:656)
at org.apache.lucene.facet.DrillSideways.searchSequentially(DrillSideways.java:510)
at org.apache.lucene.facet.DrillSideways.search(DrillSideways.java:446)
```
I don't know why there is that restriction. Maybe it is possible just delete

### Version and environment details

Lucene 9.4.2

Contributor guide

Open the contributing guide

Research direction

Reproduce the exception with the provided BugTest and Lucene 9.4.2 setup. Start with org.apache.lucene.facet.DrillSidewaysScorer.java at line 84, then inspect TimeLimitingBulkScorer.java:68 and DrillSideways.java; done means the QueryTimeout path no longer throws the reported maxDoc exception and coverage verifies the behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
search
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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