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Enforce ResourceGroup level query limits
Enables query manager to kill a query which exceeds its resource group allocation.
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78 changes: 78 additions & 0 deletions
78
presto-main/src/main/java/com/facebook/presto/execution/QueryLimit.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package com.facebook.presto.execution; | ||
|
|
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| import io.airlift.units.DataSize; | ||
| import io.airlift.units.Duration; | ||
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|
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| import java.util.Arrays; | ||
| import java.util.Comparator; | ||
| import java.util.Objects; | ||
| import java.util.Optional; | ||
| import java.util.stream.Stream; | ||
|
|
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| import static java.util.Objects.requireNonNull; | ||
|
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| public class QueryLimit<T extends Comparable<T>> | ||
| { | ||
| private final T limit; | ||
| private final Source source; | ||
|
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| private QueryLimit( | ||
| T limit, | ||
| Source source) | ||
| { | ||
| this.limit = requireNonNull(limit, "limit is null"); | ||
| this.source = requireNonNull(source, "source is null"); | ||
| } | ||
|
|
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| public static QueryLimit<Duration> createDurationLimit(Duration limit, Source source) | ||
| { | ||
| return new QueryLimit<>(limit, source); | ||
| } | ||
|
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| public static QueryLimit<DataSize> createDataSizeLimit(DataSize limit, Source source) | ||
| { | ||
| return new QueryLimit<>(limit, source); | ||
| } | ||
|
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| public T getLimit() | ||
| { | ||
| return limit; | ||
| } | ||
|
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| public Source getLimitSource() | ||
| { | ||
| return source; | ||
| } | ||
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| public enum Source | ||
| { | ||
| QUERY, | ||
| SYSTEM, | ||
| RESOURCE_GROUP, | ||
| /**/; | ||
| } | ||
|
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| @SafeVarargs | ||
| public static <S extends Comparable<S>> QueryLimit<S> getMinimum(QueryLimit<S> limit, QueryLimit<S>... limits) | ||
| { | ||
| Optional<QueryLimit<S>> queryLimit = Stream.concat( | ||
| limits != null ? Arrays.stream(limits) : Stream.empty(), | ||
| limit != null ? Stream.of(limit) : Stream.empty()) | ||
| .filter(Objects::nonNull) | ||
| .min(Comparator.comparing(QueryLimit::getLimit)); | ||
| return queryLimit.orElseThrow(() -> new IllegalArgumentException("At least one nonnull argument is required.")); | ||
| } | ||
| } |
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