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Introduce ApproximateRangeQuery and ApproximateQuery (opensearch-proj…
…ect#13788) This introduces a basic "approximation" framework that improves query performance by modifying the query in a way that should be functionally equivalent. To start, we can reduce the bounds of a range query in order to satisfy the `track_total_hits` value (which defaults to 10,000). --------- Signed-off-by: Harsha Vamsi Kalluri <[email protected]> Signed-off-by: Michael Froh <[email protected]> Co-authored-by: Michael Froh <[email protected]>
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rest-api-spec/src/main/resources/rest-api-spec/test/search/370_approximate_range.yml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| --- | ||
| "search with approximate range": | ||
| - do: | ||
| indices.create: | ||
| index: test | ||
| body: | ||
| mappings: | ||
| properties: | ||
| date: | ||
| type: date | ||
| index: true | ||
| doc_values: true | ||
|
|
||
| - do: | ||
| bulk: | ||
| index: test | ||
| refresh: true | ||
| body: | ||
| - '{"index": {"_index": "test", "_id": "1" }}' | ||
| - '{ "date": "2018-10-29T12:12:12.987Z" }' | ||
| - '{ "index": { "_index": "test", "_id": "2" }}' | ||
| - '{ "date": "2020-10-29T12:12:12.987Z" }' | ||
| - '{ "index": { "_index": "test", "_id": "3" } }' | ||
| - '{ "date": "2024-10-29T12:12:12.987Z" }' | ||
|
|
||
| - do: | ||
| search: | ||
| rest_total_hits_as_int: true | ||
| index: test | ||
| body: | ||
| query: | ||
| range: { | ||
| date: { | ||
| gte: "2018-10-29T12:12:12.987Z" | ||
| }, | ||
| } | ||
|
|
||
| - match: { hits.total: 3 } | ||
|
|
||
| - do: | ||
| search: | ||
| rest_total_hits_as_int: true | ||
| index: test | ||
| body: | ||
| sort: [{ date: asc }] | ||
| query: | ||
| range: { | ||
| date: { | ||
| gte: "2018-10-29T12:12:12.987Z" | ||
| }, | ||
| } | ||
|
|
||
|
|
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| - match: { hits.total: 3 } | ||
| - match: { hits.hits.0._id: "1" } | ||
|
|
||
| - do: | ||
| search: | ||
| rest_total_hits_as_int: true | ||
| index: test | ||
| body: | ||
| sort: [{ date: desc }] | ||
| query: | ||
| range: { | ||
| date: { | ||
| gte: "2018-10-29T12:12:12.987Z", | ||
| lte: "2020-10-29T12:12:12.987Z" | ||
| }, | ||
| } | ||
|
|
||
| - match: { hits.total: 2 } | ||
| - match: { hits.hits.0._id: "2" } |
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62 changes: 62 additions & 0 deletions
62
server/src/main/java/org/opensearch/search/approximate/ApproximateIndexOrDocValuesQuery.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
|
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| package org.opensearch.search.approximate; | ||
|
|
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| import org.apache.lucene.search.IndexOrDocValuesQuery; | ||
| import org.apache.lucene.search.Query; | ||
| import org.apache.lucene.search.QueryVisitor; | ||
|
|
||
| /** | ||
| * A wrapper around {@link IndexOrDocValuesQuery} that can be used to run approximate queries. | ||
| * It delegates to either {@link ApproximateQuery} or {@link IndexOrDocValuesQuery} based on whether the query can be approximated or not. | ||
| * @see ApproximateQuery | ||
| */ | ||
| public final class ApproximateIndexOrDocValuesQuery extends ApproximateScoreQuery { | ||
|
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| private final ApproximateQuery approximateIndexQuery; | ||
| private final IndexOrDocValuesQuery indexOrDocValuesQuery; | ||
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| public ApproximateIndexOrDocValuesQuery(Query indexQuery, ApproximateQuery approximateIndexQuery, Query dvQuery) { | ||
| super(new IndexOrDocValuesQuery(indexQuery, dvQuery), approximateIndexQuery); | ||
| this.approximateIndexQuery = approximateIndexQuery; | ||
| this.indexOrDocValuesQuery = new IndexOrDocValuesQuery(indexQuery, dvQuery); | ||
| } | ||
|
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| @Override | ||
| public String toString(String field) { | ||
| return "ApproximateIndexOrDocValuesQuery(indexQuery=" | ||
| + indexOrDocValuesQuery.getIndexQuery().toString(field) | ||
| + ", approximateIndexQuery=" | ||
| + approximateIndexQuery.toString(field) | ||
| + ", dvQuery=" | ||
| + indexOrDocValuesQuery.getRandomAccessQuery().toString(field) | ||
| + ")"; | ||
| } | ||
|
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| @Override | ||
| public void visit(QueryVisitor visitor) { | ||
| indexOrDocValuesQuery.visit(visitor); | ||
| } | ||
|
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||
| @Override | ||
| public boolean equals(Object obj) { | ||
| if (sameClassAs(obj) == false) { | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
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||
| @Override | ||
| public int hashCode() { | ||
| int h = classHash(); | ||
| h = 31 * h + indexOrDocValuesQuery.getIndexQuery().hashCode(); | ||
| h = 31 * h + indexOrDocValuesQuery.getRandomAccessQuery().hashCode(); | ||
| return h; | ||
| } | ||
| } |
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