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[ML] automatically update deprecated datafeed aggregations #55678
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benwtrent
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benwtrent:feature/ml-df-auto-update
Apr 28, 2020
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67 changes: 67 additions & 0 deletions
67
...test/java/org/elasticsearch/xpack/core/ml/datafeed/AggProviderWireSerializationTests.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License; | ||
| * you may not use this file except in compliance with the Elastic License. | ||
| */ | ||
| package org.elasticsearch.xpack.core.ml.datafeed; | ||
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|
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| import org.elasticsearch.Version; | ||
| import org.elasticsearch.common.io.stream.NamedWriteableRegistry; | ||
| import org.elasticsearch.common.io.stream.Writeable; | ||
| import org.elasticsearch.common.settings.Settings; | ||
| import org.elasticsearch.common.xcontent.NamedXContentRegistry; | ||
| import org.elasticsearch.search.SearchModule; | ||
| import org.elasticsearch.search.aggregations.AggregatorFactories; | ||
| import org.elasticsearch.xpack.core.ml.AbstractBWCWireSerializationTestCase; | ||
| import org.elasticsearch.xpack.core.ml.utils.XContentObjectTransformer; | ||
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|
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| import java.io.IOException; | ||
| import java.util.Collections; | ||
| import java.util.Map; | ||
|
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| public class AggProviderWireSerializationTests extends AbstractBWCWireSerializationTestCase<AggProvider> { | ||
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| @Override | ||
| protected NamedWriteableRegistry writableRegistry() { | ||
| SearchModule searchModule = new SearchModule(Settings.EMPTY, Collections.emptyList()); | ||
| return new NamedWriteableRegistry(searchModule.getNamedWriteables()); | ||
| } | ||
|
|
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| @Override | ||
| protected NamedWriteableRegistry getNamedWriteableRegistry() { | ||
| return writableRegistry(); | ||
| } | ||
|
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| @Override | ||
| protected AggProvider createTestInstance() { | ||
| return createRandomValidAggProvider(); | ||
| } | ||
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| @Override | ||
| protected Writeable.Reader<AggProvider> instanceReader() { | ||
| return AggProvider::fromStream; | ||
| } | ||
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| public static AggProvider createRandomValidAggProvider() { | ||
| Map<String, Object> agg = Collections.singletonMap(randomAlphaOfLengthBetween(1, 10), | ||
| Collections.singletonMap("avg", Collections.singletonMap("field", randomAlphaOfLengthBetween(1, 10)))); | ||
| try { | ||
| SearchModule searchModule = new SearchModule(Settings.EMPTY, Collections.emptyList()); | ||
| AggregatorFactories.Builder aggs = | ||
| XContentObjectTransformer.aggregatorTransformer(new NamedXContentRegistry(searchModule.getNamedXContents())) | ||
| .fromMap(agg); | ||
| return new AggProvider(agg, aggs, null, false); | ||
| } catch (IOException ex) { | ||
| fail(ex.getMessage()); | ||
| } | ||
| return null; | ||
| } | ||
|
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| @Override | ||
| protected AggProvider mutateInstanceForVersion(AggProvider instance, Version version) { | ||
| if (version.onOrBefore(Version.V_8_0_0)) { | ||
| return new AggProvider(instance.getAggs(), instance.getParsedAggs(), instance.getParsingException(), false); | ||
| } | ||
| return instance; | ||
| } | ||
| } | ||
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77 changes: 77 additions & 0 deletions
77
x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/MlAutoUpdateService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License; | ||
| * you may not use this file except in compliance with the Elastic License. | ||
| */ | ||
|
|
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| package org.elasticsearch.xpack.ml; | ||
|
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| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.apache.logging.log4j.message.ParameterizedMessage; | ||
| import org.elasticsearch.Version; | ||
| import org.elasticsearch.cluster.ClusterChangedEvent; | ||
| import org.elasticsearch.cluster.ClusterStateListener; | ||
| import org.elasticsearch.cluster.service.ClusterService; | ||
| import org.elasticsearch.threadpool.ThreadPool; | ||
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|
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| import java.util.List; | ||
| import java.util.Set; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.stream.Collectors; | ||
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| public class MlAutoUpdateService implements ClusterStateListener { | ||
| private static final Logger logger = LogManager.getLogger(MlAutoUpdateService.class); | ||
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| public interface UpdateAction { | ||
| boolean minNodeSupported(Version minNodeVersion); | ||
| String getName(); | ||
| void runUpdate(); | ||
| } | ||
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| private final List<UpdateAction> updateActions; | ||
| private final Set<String> currentlyUpdating; | ||
| private final Set<String> completedUpdates; | ||
| private final ThreadPool threadPool; | ||
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| public MlAutoUpdateService(ThreadPool threadPool, ClusterService clusterService, List<UpdateAction> updateActions) { | ||
| clusterService.addListener(this); | ||
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|
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| this.updateActions = updateActions; | ||
| this.completedUpdates = ConcurrentHashMap.newKeySet(); | ||
| this.currentlyUpdating = ConcurrentHashMap.newKeySet(); | ||
| this.threadPool = threadPool; | ||
| } | ||
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| @Override | ||
| public void clusterChanged(ClusterChangedEvent event) { | ||
| if (event.localNodeMaster() == false) { | ||
| return; | ||
| } | ||
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| Version minNodeVersion = event.state().getNodes().getMinNodeVersion(); | ||
| final List<UpdateAction> toRun = updateActions.stream() | ||
| .filter(action -> action.minNodeSupported(minNodeVersion)) | ||
| .filter(action -> completedUpdates.contains(action.getName()) == false) | ||
| .filter(action -> currentlyUpdating.add(action.getName())) | ||
| .collect(Collectors.toList()); | ||
| threadPool.executor(MachineLearning.UTILITY_THREAD_POOL_NAME).execute( | ||
| () -> toRun.forEach(this::runUpdate) | ||
| ); | ||
| } | ||
|
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| private void runUpdate(UpdateAction action) { | ||
| try { | ||
| logger.debug(() -> new ParameterizedMessage("[{}] starting executing update action", action.getName())); | ||
| action.runUpdate(); | ||
| this.completedUpdates.add(action.getName()); | ||
| logger.debug(() -> new ParameterizedMessage("[{}] succeeded executing update action", action.getName())); | ||
| } catch (Exception ex) { | ||
| logger.warn(new ParameterizedMessage("[{}] failure executing update action", action.getName()), ex); | ||
| } finally { | ||
| this.currentlyUpdating.remove(action.getName()); | ||
| logger.debug(() -> new ParameterizedMessage("[{}] no longer executing update action", action.getName())); | ||
| } | ||
| } | ||
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| } | ||
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toXContentfor the agg provider should only provide the agg map. This test is to make sure that we appropriate write between nodes of various versions.