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Refactor parsing of KNNQueryBuilder (opensearch-project#1824)
Refactors parsing of KNNQueryBuilder. First, it moves parsing logic to a separate class. Next, it uses ObjectParser instead of parsing manually by hand. Lastly, it also moves out the streaming. To test, it contains a simple jmh benchmark for testing as well as new unit tests. Signed-off-by: John Mazanec <[email protected]>
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micro-benchmarks/src/main/java/org/opensearch/knn/QueryParsingBenchmarks.java
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/* | ||
* Copyright OpenSearch Contributors | ||
* SPDX-License-Identifier: Apache-2.0 | ||
*/ | ||
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package org.opensearch.knn; | ||
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import org.openjdk.jmh.annotations.Benchmark; | ||
import org.openjdk.jmh.annotations.Fork; | ||
import org.openjdk.jmh.annotations.Measurement; | ||
import org.openjdk.jmh.annotations.Param; | ||
import org.openjdk.jmh.annotations.Scope; | ||
import org.openjdk.jmh.annotations.Setup; | ||
import org.openjdk.jmh.annotations.State; | ||
import org.openjdk.jmh.annotations.Warmup; | ||
import org.openjdk.jmh.infra.Blackhole; | ||
import org.opensearch.cluster.ClusterModule; | ||
import org.opensearch.common.xcontent.LoggingDeprecationHandler; | ||
import org.opensearch.common.xcontent.XContentFactory; | ||
import org.opensearch.common.xcontent.json.JsonXContent; | ||
import org.opensearch.core.common.bytes.BytesArray; | ||
import org.opensearch.core.common.bytes.BytesReference; | ||
import org.opensearch.core.xcontent.NamedXContentRegistry; | ||
import org.opensearch.core.xcontent.XContentBuilder; | ||
import org.opensearch.core.xcontent.XContentParser; | ||
import org.opensearch.index.query.QueryBuilder; | ||
import org.opensearch.index.query.QueryBuilders; | ||
import org.opensearch.index.query.TermQueryBuilder; | ||
import org.opensearch.knn.index.query.KNNQueryBuilder; | ||
import org.opensearch.knn.index.query.parser.KNNQueryBuilderParser; | ||
import org.opensearch.plugins.SearchPlugin; | ||
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import java.io.IOException; | ||
import java.util.Arrays; | ||
import java.util.List; | ||
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/** | ||
* Benchmarks for impact of changes around query parsing | ||
*/ | ||
@Warmup(iterations = 5, time = 10) | ||
@Measurement(iterations = 3, time = 10) | ||
@Fork(3) | ||
@State(Scope.Benchmark) | ||
public class QueryParsingBenchmarks { | ||
private static final TermQueryBuilder TERM_QUERY = QueryBuilders.termQuery("field", "value"); | ||
private static final NamedXContentRegistry NAMED_X_CONTENT_REGISTRY = xContentRegistry(); | ||
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@Param({ "128", "1024" }) | ||
private int dimension; | ||
@Param({ "basic", "filter" }) | ||
private String type; | ||
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private BytesReference bytesReference; | ||
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@Setup | ||
public void setup() throws IOException { | ||
XContentBuilder builder = XContentFactory.jsonBuilder(); | ||
builder.startObject(); | ||
builder.startObject("test"); | ||
builder.field(KNNQueryBuilder.VECTOR_FIELD.getPreferredName(), generateVectorWithOnes(dimension)); | ||
builder.field(KNNQueryBuilder.K_FIELD.getPreferredName(), 1); | ||
if (type.equals("filter")) { | ||
builder.field(KNNQueryBuilder.FILTER_FIELD.getPreferredName(), TERM_QUERY); | ||
} | ||
builder.endObject(); | ||
builder.endObject(); | ||
bytesReference = BytesReference.bytes(builder); | ||
} | ||
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@Benchmark | ||
public void fromXContent(final Blackhole bh) throws IOException { | ||
XContentParser xContentParser = createParser(); | ||
bh.consume(KNNQueryBuilderParser.fromXContent(xContentParser)); | ||
} | ||
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private XContentParser createParser() throws IOException { | ||
XContentParser contentParser = createParser(bytesReference); | ||
contentParser.nextToken(); | ||
return contentParser; | ||
} | ||
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private float[] generateVectorWithOnes(final int dimensions) { | ||
float[] vector = new float[dimensions]; | ||
Arrays.fill(vector, (float) 1); | ||
return vector; | ||
} | ||
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private XContentParser createParser(final BytesReference data) throws IOException { | ||
BytesArray array = (BytesArray) data; | ||
return JsonXContent.jsonXContent.createParser( | ||
NAMED_X_CONTENT_REGISTRY, | ||
LoggingDeprecationHandler.INSTANCE, | ||
array.array(), | ||
array.offset(), | ||
array.length() | ||
); | ||
} | ||
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private static NamedXContentRegistry xContentRegistry() { | ||
List<NamedXContentRegistry.Entry> list = ClusterModule.getNamedXWriteables(); | ||
SearchPlugin.QuerySpec<?> spec = new SearchPlugin.QuerySpec<>( | ||
TermQueryBuilder.NAME, | ||
TermQueryBuilder::new, | ||
TermQueryBuilder::fromXContent | ||
); | ||
list.add(new NamedXContentRegistry.Entry(QueryBuilder.class, spec.getName(), (p, c) -> spec.getParser().fromXContent(p))); | ||
return new NamedXContentRegistry(list); | ||
} | ||
} |
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