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[Remote segments] Add backpressure in write path on segments lag betw…
…een local and remote store (opensearch-project#7459) Signed-off-by: Ashish Singh <[email protected]>
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...rTest/java/org/opensearch/remotestore/AbstractRemoteStoreMockRepositoryIntegTestCase.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
||
| package org.opensearch.remotestore; | ||
|
|
||
| import org.junit.Before; | ||
| import org.opensearch.action.index.IndexResponse; | ||
| import org.opensearch.cluster.metadata.IndexMetadata; | ||
| import org.opensearch.common.UUIDs; | ||
| import org.opensearch.common.io.FileSystemUtils; | ||
| import org.opensearch.common.settings.Settings; | ||
| import org.opensearch.common.util.FeatureFlags; | ||
| import org.opensearch.index.IndexModule; | ||
| import org.opensearch.index.IndexSettings; | ||
| import org.opensearch.index.store.RemoteSegmentStoreDirectory; | ||
| import org.opensearch.indices.replication.common.ReplicationType; | ||
| import org.opensearch.snapshots.AbstractSnapshotIntegTestCase; | ||
| import org.opensearch.test.FeatureFlagSetter; | ||
|
|
||
| import java.io.IOException; | ||
| import java.nio.file.Path; | ||
| import java.util.Arrays; | ||
| import java.util.Collections; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| import static org.opensearch.test.hamcrest.OpenSearchAssertions.assertAcked; | ||
|
|
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| public abstract class AbstractRemoteStoreMockRepositoryIntegTestCase extends AbstractSnapshotIntegTestCase { | ||
|
|
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| protected static final String REPOSITORY_NAME = "my-segment-repo-1"; | ||
| protected static final String INDEX_NAME = "remote-store-test-idx-1"; | ||
|
|
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| @Override | ||
| protected Settings featureFlagSettings() { | ||
| return Settings.builder().put(super.featureFlagSettings()).put(FeatureFlags.REMOTE_STORE, "true").build(); | ||
| } | ||
|
|
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| @Before | ||
| public void setup() { | ||
| FeatureFlagSetter.set(FeatureFlags.REMOTE_STORE); | ||
| internalCluster().startClusterManagerOnlyNode(); | ||
| } | ||
|
|
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| @Override | ||
| public Settings indexSettings() { | ||
| return remoteStoreIndexSettings(0); | ||
| } | ||
|
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| protected Settings remoteStoreIndexSettings(int numberOfReplicas) { | ||
| return Settings.builder() | ||
| .put(super.indexSettings()) | ||
| .put(IndexSettings.INDEX_REFRESH_INTERVAL_SETTING.getKey(), "300s") | ||
| .put(IndexMetadata.SETTING_NUMBER_OF_SHARDS, 1) | ||
| .put(IndexMetadata.SETTING_NUMBER_OF_REPLICAS, numberOfReplicas) | ||
| .put(IndexModule.INDEX_QUERY_CACHE_ENABLED_SETTING.getKey(), false) | ||
| .put(IndexMetadata.SETTING_REPLICATION_TYPE, ReplicationType.SEGMENT) | ||
| .put(IndexMetadata.SETTING_REMOTE_STORE_ENABLED, true) | ||
| .put(IndexMetadata.SETTING_REMOTE_STORE_REPOSITORY, REPOSITORY_NAME) | ||
| .build(); | ||
| } | ||
|
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| protected void deleteRepo() { | ||
| logger.info("--> Deleting the repository={}", REPOSITORY_NAME); | ||
| assertAcked(clusterAdmin().prepareDeleteRepository(REPOSITORY_NAME)); | ||
| } | ||
|
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| protected void setup(Path repoLocation, double ioFailureRate, String skipExceptionBlobList) { | ||
| logger.info("--> Creating repository={} at the path={}", REPOSITORY_NAME, repoLocation); | ||
| // The random_control_io_exception_rate setting ensures that 10-25% of all operations to remote store results in | ||
| /// IOException. skip_exception_on_verification_file & skip_exception_on_list_blobs settings ensures that the | ||
| // repository creation can happen without failure. | ||
| createRepository( | ||
| REPOSITORY_NAME, | ||
| "mock", | ||
| Settings.builder() | ||
| .put("location", repoLocation) | ||
| .put("random_control_io_exception_rate", ioFailureRate) | ||
| .put("skip_exception_on_verification_file", true) | ||
| .put("skip_exception_on_list_blobs", true) | ||
| // Skipping is required for metadata as it is part of recovery | ||
| .put("skip_exception_on_blobs", skipExceptionBlobList) | ||
| .put("max_failure_number", Long.MAX_VALUE) | ||
| ); | ||
|
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| internalCluster().startDataOnlyNodes(1); | ||
| createIndex(INDEX_NAME); | ||
| logger.info("--> Created index={}", INDEX_NAME); | ||
| ensureYellowAndNoInitializingShards(INDEX_NAME); | ||
| logger.info("--> Cluster is yellow with no initializing shards"); | ||
| ensureGreen(INDEX_NAME); | ||
| logger.info("--> Cluster is green"); | ||
| } | ||
|
|
||
| /** | ||
| * Gets all segment files which starts with "_". For instance, _0.cfe, _o.cfs etc. | ||
| * | ||
| * @param location the path to location where segment files are being searched. | ||
| * @return set of file names of all segment file or empty set if there was IOException thrown. | ||
| */ | ||
| protected Set<String> getSegmentFiles(Path location) { | ||
| try { | ||
| return Arrays.stream(FileSystemUtils.files(location)) | ||
| .filter(path -> path.getFileName().toString().startsWith("_")) | ||
| .map(path -> path.getFileName().toString()) | ||
| .map(this::getLocalSegmentFilename) | ||
| .collect(Collectors.toSet()); | ||
| } catch (IOException exception) { | ||
| logger.error("Exception occurred while getting segment files", exception); | ||
| } | ||
| return Collections.emptySet(); | ||
| } | ||
|
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| private String getLocalSegmentFilename(String remoteFilename) { | ||
| return remoteFilename.split(RemoteSegmentStoreDirectory.SEGMENT_NAME_UUID_SEPARATOR)[0]; | ||
| } | ||
|
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| private IndexResponse indexSingleDoc() { | ||
| return client().prepareIndex(INDEX_NAME) | ||
| .setId(UUIDs.randomBase64UUID()) | ||
| .setSource(randomAlphaOfLength(5), randomAlphaOfLength(5)) | ||
| .get(); | ||
| } | ||
|
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| protected void indexData(int numberOfIterations, boolean invokeFlush) { | ||
| logger.info("--> Indexing data for {} iterations with flush={}", numberOfIterations, invokeFlush); | ||
| for (int i = 0; i < numberOfIterations; i++) { | ||
| int numberOfOperations = randomIntBetween(1, 5); | ||
| logger.info("--> Indexing {} operations in iteration #{}", numberOfOperations, i); | ||
| for (int j = 0; j < numberOfOperations; j++) { | ||
| indexSingleDoc(); | ||
| } | ||
| if (invokeFlush) { | ||
| flush(INDEX_NAME); | ||
| } else { | ||
| refresh(INDEX_NAME); | ||
| } | ||
| } | ||
| } | ||
| } |
43 changes: 43 additions & 0 deletions
43
...er/src/internalClusterTest/java/org/opensearch/remotestore/RemoteStoreBackpressureIT.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
||
| package org.opensearch.remotestore; | ||
|
|
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| import org.opensearch.action.admin.cluster.settings.ClusterUpdateSettingsResponse; | ||
| import org.opensearch.common.settings.Settings; | ||
| import org.opensearch.core.concurrency.OpenSearchRejectedExecutionException; | ||
| import org.opensearch.test.OpenSearchIntegTestCase; | ||
|
|
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| import java.nio.file.Path; | ||
|
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| import static org.opensearch.index.remote.RemoteRefreshSegmentPressureSettings.REMOTE_REFRESH_SEGMENT_PRESSURE_ENABLED; | ||
|
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| @OpenSearchIntegTestCase.ClusterScope(scope = OpenSearchIntegTestCase.Scope.TEST, numDataNodes = 0) | ||
| public class RemoteStoreBackpressureIT extends AbstractRemoteStoreMockRepositoryIntegTestCase { | ||
|
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| public void testWritesRejected() { | ||
| Path location = randomRepoPath().toAbsolutePath(); | ||
| setup(location, 1d, "metadata"); | ||
|
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| Settings request = Settings.builder().put(REMOTE_REFRESH_SEGMENT_PRESSURE_ENABLED.getKey(), true).build(); | ||
| ClusterUpdateSettingsResponse clusterUpdateResponse = client().admin() | ||
| .cluster() | ||
| .prepareUpdateSettings() | ||
| .setPersistentSettings(request) | ||
| .get(); | ||
| assertEquals(clusterUpdateResponse.getPersistentSettings().get(REMOTE_REFRESH_SEGMENT_PRESSURE_ENABLED.getKey()), "true"); | ||
|
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| logger.info("--> Indexing data"); | ||
| OpenSearchRejectedExecutionException ex = assertThrows( | ||
| OpenSearchRejectedExecutionException.class, | ||
| () -> indexData(randomIntBetween(10, 20), randomBoolean()) | ||
| ); | ||
| assertTrue(ex.getMessage().contains("rejected execution on primary shard")); | ||
| deleteRepo(); | ||
| } | ||
| } |
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