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[ML] More advanced post-test cleanup of ML indices #39049

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Feb 18, 2019
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[ML] More advanced post-test cleanup of ML indices #39049

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30 changes: 30 additions & 0 deletions x-pack/plugin/ml/src/test/java/org/elasticsearch/xpack/ml/MlSingleNodeTestCase.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,11 +15,14 @@
import org.elasticsearch.xpack.core.XPackSettings;
import org.elasticsearch.xpack.core.ml.MachineLearningField;

import java.util.Arrays;
import java.util.Collection;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Consumer;

import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;

/**
* An extension to {@link ESSingleNodeTestCase} that adds node settings specifically needed for ML test cases.
*/
Expand All @@ -46,6 +49,33 @@ protected Collection<Class<? extends Plugin>> getPlugins() {
return pluginList(LocalStateMachineLearning.class);
}

/**
* This cleanup is to fix the problem described in
* https://github.com/elastic/elasticsearch/issues/38952
*/
@Override
public void tearDown() throws Exception {
try {
logger.info("[{}#{}]: ML-specific after test cleanup", getTestClass().getSimpleName(), getTestName());
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What is the reason for making this info level? I would like to see our test logs have less lines in them, not more.

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It's info in the same place in ESSingleNodeTestCase, so I copied that. I'm happy to downgrade this one to trace though.

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Oh, I did not realize that we had an info line there in ESSingleNodeTestCase too. Thanks for pointing that out. Yes, I think that not only this one but both can be downgraded to trace. 🙏

String[] nonAnnotationMlIndices;
boolean mlAnnotationsIndexExists;
do {
String[] mlIndices = client().admin().indices().prepareGetIndex().addIndices(".ml-*").get().indices();
nonAnnotationMlIndices = Arrays.stream(mlIndices).filter(name -> name.startsWith(".ml-annotations") == false)
.toArray(String[]::new);
mlAnnotationsIndexExists = mlIndices.length > nonAnnotationMlIndices.length;
} while (nonAnnotationMlIndices.length > 0 && mlAnnotationsIndexExists == false);
if (nonAnnotationMlIndices.length > 0) {
// Delete the ML indices apart from the annotations index. The annotations index will be deleted by the
// base class cleanup. We want to delete all the others first so that the annotations index doesn't get
// automatically recreated.
assertAcked(client().admin().indices().prepareDelete(nonAnnotationMlIndices).get());
}
} finally {
super.tearDown();
}
}

protected void waitForMlTemplates() throws Exception {
// block until the templates are installed
assertBusy(() -> {
Expand Down