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[8.x] Adding deprecation warnings for rank and sub_searches (#114854) (#114950)
* Adding deprecation warnings for rank and sub_searches (#114854) * removing updatev10 reference
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‎docs/changelog/114854.yaml‎

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pr: 114854
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summary: Adding deprecation warnings for rrf using rank and `sub_searches`
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area: Search
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type: deprecation
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issues: []
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deprecation:
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title: Adding deprecation warnings for rrf using rank and `sub_searches`
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area: REST API
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details: Search API parameter `sub_searches` will no longer be a supported and will be removed in future releases. Similarly, `rrf` can only be used through the specified `retriever` and no longer though the `rank` parameter
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impact: Requests specifying rrf through `rank` and/or `sub_searches` elements will be disallowed in a future version. Users should instead utilize the new `retriever` parameter.

‎modules/reindex/src/test/java/org/elasticsearch/reindex/BulkByScrollParallelizationHelperTests.java‎

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import org.elasticsearch.test.ESTestCase;
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import java.io.IOException;
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import java.util.Collections;
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import static java.util.Collections.emptyList;
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import static org.elasticsearch.reindex.BulkByScrollParallelizationHelper.sliceIntoSubRequests;
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import static org.elasticsearch.search.RandomSearchRequestGenerator.randomSearchRequest;
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import static org.elasticsearch.search.RandomSearchRequestGenerator.randomSearchSourceBuilder;
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public class BulkByScrollParallelizationHelperTests extends ESTestCase {
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public void testSliceIntoSubRequests() throws IOException {
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SearchRequest searchRequest = randomSearchRequest(
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() -> randomSearchSourceBuilder(() -> null, () -> null, () -> null, () -> null, () -> emptyList(), () -> null, () -> null)
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() -> randomSearchSourceBuilder(() -> null, () -> null, () -> null, Collections::emptyList, () -> null, () -> null)
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);
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if (searchRequest.source() != null) {
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// Clear the slice builder if there is one set. We can't call sliceIntoSubRequests if it is.

‎server/src/main/java/org/elasticsearch/search/builder/SearchSourceBuilder.java‎

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@@ -99,10 +99,10 @@ public final class SearchSourceBuilder implements Writeable, ToXContentObject, R
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public static final ParseField TIMEOUT_FIELD = new ParseField("timeout");
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public static final ParseField TERMINATE_AFTER_FIELD = new ParseField("terminate_after");
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public static final ParseField QUERY_FIELD = new ParseField("query");
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public static final ParseField SUB_SEARCHES_FIELD = new ParseField("sub_searches");
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public static final ParseField SUB_SEARCHES_FIELD = new ParseField("sub_searches").withAllDeprecated("retriever");
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public static final ParseField RANK_FIELD = new ParseField("rank").withAllDeprecated("retriever");
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public static final ParseField POST_FILTER_FIELD = new ParseField("post_filter");
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public static final ParseField KNN_FIELD = new ParseField("knn");
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public static final ParseField RANK_FIELD = new ParseField("rank");
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public static final ParseField MIN_SCORE_FIELD = new ParseField("min_score");
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public static final ParseField VERSION_FIELD = new ParseField("version");
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public static final ParseField SEQ_NO_PRIMARY_TERM_FIELD = new ParseField("seq_no_primary_term");

‎server/src/test/java/org/elasticsearch/search/AbstractSearchTestCase.java‎

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@@ -89,7 +89,6 @@ protected SearchSourceBuilder createSearchSourceBuilder() {
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return RandomSearchRequestGenerator.randomSearchSourceBuilder(
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HighlightBuilderTests::randomHighlighterBuilder,
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SuggestBuilderTests::randomSuggestBuilder,
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TestRankBuilder::randomRankBuilder,
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QueryRescorerBuilderTests::randomRescoreBuilder,
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randomExtBuilders,
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CollapseBuilderTests::randomCollapseBuilder,

‎server/src/test/java/org/elasticsearch/search/vectors/KnnSearchRequestParserTests.java‎

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() -> null,
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() -> null,
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() -> null,
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() -> null,
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Collections::emptyList,
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() -> null,
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() -> null

‎test/framework/src/main/java/org/elasticsearch/search/RandomSearchRequestGenerator.java‎

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import org.elasticsearch.search.aggregations.AggregationBuilders;
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import org.elasticsearch.search.builder.PointInTimeBuilder;
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import org.elasticsearch.search.builder.SearchSourceBuilder;
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import org.elasticsearch.search.builder.SubSearchSourceBuilder;
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import org.elasticsearch.search.collapse.CollapseBuilder;
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import org.elasticsearch.search.fetch.subphase.FetchSourceContext;
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import org.elasticsearch.search.fetch.subphase.FieldAndFormat;
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import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
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import org.elasticsearch.search.internal.SearchContext;
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import org.elasticsearch.search.rank.RankBuilder;
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import org.elasticsearch.search.rescore.RescorerBuilder;
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import org.elasticsearch.search.searchafter.SearchAfterBuilder;
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import org.elasticsearch.search.slice.SliceBuilder;
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public static SearchSourceBuilder randomSearchSourceBuilder(
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Supplier<HighlightBuilder> randomHighlightBuilder,
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Supplier<SuggestBuilder> randomSuggestBuilder,
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Supplier<RankBuilder> rankContextBuilderSupplier,
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Supplier<RescorerBuilder<?>> randomRescoreBuilder,
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Supplier<List<SearchExtBuilder>> randomExtBuilders,
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Supplier<CollapseBuilder> randomCollapseBuilder,
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}
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if (randomBoolean()) {
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builder.query(QueryBuilders.termQuery(randomAlphaOfLengthBetween(5, 20), randomAlphaOfLengthBetween(5, 20)));
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} else if (randomBoolean()) {
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builder.subSearches(
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List.of(
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new SubSearchSourceBuilder(
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QueryBuilders.termQuery(randomAlphaOfLengthBetween(5, 20), randomAlphaOfLengthBetween(5, 20))
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),
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new SubSearchSourceBuilder(
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QueryBuilders.termQuery(randomAlphaOfLengthBetween(5, 20), randomAlphaOfLengthBetween(5, 20))
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)
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)
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);
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}
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if (randomBoolean()) {
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builder.postFilter(QueryBuilders.termQuery(randomAlphaOfLengthBetween(5, 20), randomAlphaOfLengthBetween(5, 20)));
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if (randomBoolean()) {
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builder.suggest(randomSuggestBuilder.get());
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}
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if (randomBoolean()) {
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builder.rankBuilder(rankContextBuilderSupplier.get());
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}
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if (randomBoolean()) {
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int numRescores = randomIntBetween(1, 5);
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for (int i = 0; i < numRescores; i++) {

‎x-pack/plugin/rank-rrf/src/main/java/org/elasticsearch/xpack/rank/rrf/RRFRankBuilder.java‎

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/**
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* The builder to support RRF. Adds user-defined parameters for window size and rank constant.
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*
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* @deprecated RRF support is provided through the retriever framework. Please use {@link RRFRetrieverBuilder instead}
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*/
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@Deprecated
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public class RRFRankBuilder extends RankBuilder {
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public static final int DEFAULT_RANK_CONSTANT = 60;
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public static final ParseField RANK_CONSTANT_FIELD = new ParseField("rank_constant");
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static final ConstructingObjectParser<RRFRankBuilder, Void> PARSER = new ConstructingObjectParser<>(RRFRankPlugin.NAME, args -> {
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int windowSize = args[0] == null ? DEFAULT_RANK_WINDOW_SIZE : (int) args[0];
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int rankConstant = args[1] == null ? DEFAULT_RANK_CONSTANT : (int) args[1];
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int rankConstant = args[1] == null ? RRFRetrieverBuilder.DEFAULT_RANK_CONSTANT : (int) args[1];
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return new RRFRankBuilder(windowSize, rankConstant);
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});
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‎x-pack/plugin/rank-rrf/src/main/java/org/elasticsearch/xpack/rank/rrf/RRFRankDoc.java‎

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import java.util.Arrays;
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import java.util.Objects;
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import static org.elasticsearch.xpack.rank.rrf.RRFRankBuilder.DEFAULT_RANK_CONSTANT;
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import static org.elasticsearch.xpack.rank.rrf.RRFRetrieverBuilder.DEFAULT_RANK_CONSTANT;
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/**
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* {@code RRFRankDoc} supports additional ranking information

‎x-pack/plugin/rank-rrf/src/main/java/org/elasticsearch/xpack/rank/rrf/RRFRetrieverBuilder.java‎

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import org.elasticsearch.common.util.Maps;
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import org.elasticsearch.features.NodeFeature;
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import org.elasticsearch.license.LicenseUtils;
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import org.elasticsearch.search.rank.RankBuilder;
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import org.elasticsearch.search.rank.RankDoc;
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import org.elasticsearch.search.retriever.CompoundRetrieverBuilder;
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import org.elasticsearch.search.retriever.RetrieverBuilder;
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import static org.elasticsearch.xcontent.ConstructingObjectParser.constructorArg;
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import static org.elasticsearch.xcontent.ConstructingObjectParser.optionalConstructorArg;
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import static org.elasticsearch.xpack.rank.rrf.RRFRankPlugin.NAME;
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/**
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* An rrf retriever is used to represent an rrf rank element, but
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public static final ParseField RANK_WINDOW_SIZE_FIELD = new ParseField("rank_window_size");
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public static final ParseField RANK_CONSTANT_FIELD = new ParseField("rank_constant");
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public static final int DEFAULT_RANK_CONSTANT = 60;
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@SuppressWarnings("unchecked")
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static final ConstructingObjectParser<RRFRetrieverBuilder, RetrieverParserContext> PARSER = new ConstructingObjectParser<>(
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NAME,
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false,
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args -> {
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List<RetrieverBuilder> childRetrievers = (List<RetrieverBuilder>) args[0];
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List<RetrieverSource> innerRetrievers = childRetrievers.stream().map(r -> new RetrieverSource(r, null)).toList();
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int rankWindowSize = args[1] == null ? RRFRankBuilder.DEFAULT_RANK_WINDOW_SIZE : (int) args[1];
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int rankConstant = args[2] == null ? RRFRankBuilder.DEFAULT_RANK_CONSTANT : (int) args[2];
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int rankWindowSize = args[1] == null ? RankBuilder.DEFAULT_RANK_WINDOW_SIZE : (int) args[1];
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int rankConstant = args[2] == null ? DEFAULT_RANK_CONSTANT : (int) args[2];
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return new RRFRetrieverBuilder(innerRetrievers, rankWindowSize, rankConstant);
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}
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);

‎x-pack/plugin/rank-rrf/src/test/java/org/elasticsearch/xpack/rank/rrf/RRFRetrieverBuilderParsingTests.java‎

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if (randomBoolean()) {
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rankWindowSize = randomIntBetween(1, 10000);
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}
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int rankConstant = RRFRankBuilder.DEFAULT_RANK_CONSTANT;
44+
int rankConstant = RRFRetrieverBuilder.DEFAULT_RANK_CONSTANT;
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if (randomBoolean()) {
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rankConstant = randomIntBetween(1, 1000000);
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}

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