[Remote Store] Add segment transfer timeout dynamic setting (#13679)

* [Remote Store] Add segment transfer timeout dynamic setting Signed-off-by: Varun Bansal <bansvaru@amazon.com>
opensearch-project · May 23, 2024 · b3049fb · b3049fb
1 parent 5441d55
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add support for Azure Managed Identity in repository-azure ([#12423](https://github.com/opensearch-project/OpenSearch/issues/12423))
 - Add useCompoundFile index setting ([#13478](https://github.com/opensearch-project/OpenSearch/pull/13478))
 - Make outbound side of transport protocol dependent ([#13293](https://github.com/opensearch-project/OpenSearch/pull/13293))
+- [Remote Store] Add dynamic cluster settings to set timeout for segments upload to Remote Store ([#13679](https://github.com/opensearch-project/OpenSearch/pull/13679))
 
 ### Dependencies
 - Bump `com.github.spullara.mustache.java:compiler` from 0.9.10 to 0.9.13 ([#13329](https://github.com/opensearch-project/OpenSearch/pull/13329), [#13559](https://github.com/opensearch-project/OpenSearch/pull/13559))

diff --git a/...src/internalClusterTest/java/org/opensearch/remotestore/RemoteStoreRefreshListenerIT.java b/...src/internalClusterTest/java/org/opensearch/remotestore/RemoteStoreRefreshListenerIT.java
@@ -26,7 +26,6 @@
 import static org.opensearch.index.remote.RemoteStoreEnums.DataCategory.SEGMENTS;
 import static org.opensearch.index.remote.RemoteStoreEnums.DataType.DATA;
 import static org.opensearch.index.remote.RemoteStorePressureSettings.REMOTE_REFRESH_SEGMENT_PRESSURE_ENABLED;
-import static org.opensearch.test.OpenSearchTestCase.getShardLevelBlobPath;
 
 @OpenSearchIntegTestCase.ClusterScope(scope = OpenSearchIntegTestCase.Scope.TEST, numDataNodes = 0)
 public class RemoteStoreRefreshListenerIT extends AbstractRemoteStoreMockRepositoryIntegTestCase {

diff --git a/server/src/main/java/org/opensearch/common/settings/ClusterSettings.java b/server/src/main/java/org/opensearch/common/settings/ClusterSettings.java
@@ -737,6 +737,7 @@ public void apply(Settings value, Settings current, Settings previous) {
                 RemoteStoreSettings.CLUSTER_REMOTE_INDEX_SEGMENT_METADATA_RETENTION_MAX_COUNT_SETTING,
                 RemoteStoreSettings.CLUSTER_REMOTE_TRANSLOG_BUFFER_INTERVAL_SETTING,
                 RemoteStoreSettings.CLUSTER_REMOTE_TRANSLOG_TRANSFER_TIMEOUT_SETTING,
+                RemoteStoreSettings.CLUSTER_REMOTE_SEGMENT_TRANSFER_TIMEOUT_SETTING,
                 RemoteStoreSettings.CLUSTER_REMOTE_STORE_PATH_TYPE_SETTING,
                 RemoteStoreSettings.CLUSTER_REMOTE_STORE_PATH_HASH_ALGORITHM_SETTING,
                 RemoteStoreSettings.CLUSTER_REMOTE_MAX_TRANSLOG_READERS

diff --git a/server/src/main/java/org/opensearch/index/shard/IndexShard.java b/server/src/main/java/org/opensearch/index/shard/IndexShard.java
@@ -3970,7 +3970,8 @@ private EngineConfig newEngineConfig(LongSupplier globalCheckpointSupplier) thro
                 new RemoteStoreRefreshListener(
                     this,
                     this.checkpointPublisher,
-                    remoteStoreStatsTrackerFactory.getRemoteSegmentTransferTracker(shardId())
+                    remoteStoreStatsTrackerFactory.getRemoteSegmentTransferTracker(shardId()),
+                    remoteStoreSettings
                 )
             );
         }

diff --git a/server/src/main/java/org/opensearch/index/shard/RemoteStoreRefreshListener.java b/server/src/main/java/org/opensearch/index/shard/RemoteStoreRefreshListener.java
@@ -33,6 +33,7 @@
 import org.opensearch.index.store.RemoteSegmentStoreDirectory;
 import org.opensearch.index.store.remote.metadata.RemoteSegmentMetadata;
 import org.opensearch.index.translog.Translog;
+import org.opensearch.indices.RemoteStoreSettings;
 import org.opensearch.indices.replication.checkpoint.ReplicationCheckpoint;
 import org.opensearch.indices.replication.checkpoint.SegmentReplicationCheckpointPublisher;
 import org.opensearch.threadpool.ThreadPool;
@@ -45,6 +46,7 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.stream.Collectors;
 
@@ -89,11 +91,13 @@ public final class RemoteStoreRefreshListener extends ReleasableRetryableRefresh
     private volatile long primaryTerm;
     private volatile Iterator<TimeValue> backoffDelayIterator;
     private final SegmentReplicationCheckpointPublisher checkpointPublisher;
+    private final RemoteStoreSettings remoteStoreSettings;
 
     public RemoteStoreRefreshListener(
         IndexShard indexShard,
         SegmentReplicationCheckpointPublisher checkpointPublisher,
-        RemoteSegmentTransferTracker segmentTracker
+        RemoteSegmentTransferTracker segmentTracker,
+        RemoteStoreSettings remoteStoreSettings
     ) {
         super(indexShard.getThreadPool());
         logger = Loggers.getLogger(getClass(), indexShard.shardId());
@@ -116,6 +120,7 @@ public RemoteStoreRefreshListener(
         this.segmentTracker = segmentTracker;
         resetBackOffDelayIterator();
         this.checkpointPublisher = checkpointPublisher;
+        this.remoteStoreSettings = remoteStoreSettings;
     }
 
     @Override
@@ -286,7 +291,12 @@ public void onFailure(Exception e) {
 
                     // Start the segments files upload
                     uploadNewSegments(localSegmentsPostRefresh, localSegmentsSizeMap, segmentUploadsCompletedListener);
-                    latch.await();
+                    if (latch.await(
+                        remoteStoreSettings.getClusterRemoteSegmentTransferTimeout().millis(),
+                        TimeUnit.MILLISECONDS
+                    ) == false) {
+                        throw new SegmentUploadFailedException("Timeout while waiting for remote segment transfer to complete");
+                    }
                 } catch (EngineException e) {
                     logger.warn("Exception while reading SegmentInfosSnapshot", e);
                 }

diff --git a/server/src/main/java/org/opensearch/index/shard/SegmentUploadFailedException.java b/server/src/main/java/org/opensearch/index/shard/SegmentUploadFailedException.java
@@ -0,0 +1,28 @@
+/*
+ * 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.index.shard;
+
+import java.io.IOException;
+
+/**
+ * Exception to be thrown when a segment upload fails.
+ *
+ * @opensearch.internal
+ */
+public class SegmentUploadFailedException extends IOException {
+
+    /**
+     * Creates a new SegmentUploadFailedException.
+     *
+     * @param message error message
+     */
+    public SegmentUploadFailedException(String message) {
+        super(message);
+    }
+}
diff --git a/server/src/main/java/org/opensearch/indices/RemoteStoreSettings.java b/server/src/main/java/org/opensearch/indices/RemoteStoreSettings.java
@@ -105,9 +105,21 @@ public class RemoteStoreSettings {
         Property.NodeScope
     );
 
+    /**
+     * Controls timeout value while uploading segment files to remote segment store
+     */
+    public static final Setting<TimeValue> CLUSTER_REMOTE_SEGMENT_TRANSFER_TIMEOUT_SETTING = Setting.timeSetting(
+        "cluster.remote_store.segment.transfer_timeout",
+        TimeValue.timeValueMinutes(30),
+        TimeValue.timeValueMinutes(10),
+        Property.NodeScope,
+        Property.Dynamic
+    );
+
     private volatile TimeValue clusterRemoteTranslogBufferInterval;
     private volatile int minRemoteSegmentMetadataFiles;
     private volatile TimeValue clusterRemoteTranslogTransferTimeout;
+    private volatile TimeValue clusterRemoteSegmentTransferTimeout;
     private volatile RemoteStoreEnums.PathType pathType;
     private volatile RemoteStoreEnums.PathHashAlgorithm pathHashAlgorithm;
     private volatile int maxRemoteTranslogReaders;
@@ -139,6 +151,12 @@ public RemoteStoreSettings(Settings settings, ClusterSettings clusterSettings) {
 
         maxRemoteTranslogReaders = CLUSTER_REMOTE_MAX_TRANSLOG_READERS.get(settings);
         clusterSettings.addSettingsUpdateConsumer(CLUSTER_REMOTE_MAX_TRANSLOG_READERS, this::setMaxRemoteTranslogReaders);
+
+        clusterRemoteSegmentTransferTimeout = CLUSTER_REMOTE_SEGMENT_TRANSFER_TIMEOUT_SETTING.get(settings);
+        clusterSettings.addSettingsUpdateConsumer(
+            CLUSTER_REMOTE_SEGMENT_TRANSFER_TIMEOUT_SETTING,
+            this::setClusterRemoteSegmentTransferTimeout
+        );
     }
 
     public TimeValue getClusterRemoteTranslogBufferInterval() {
@@ -161,10 +179,18 @@ public TimeValue getClusterRemoteTranslogTransferTimeout() {
         return clusterRemoteTranslogTransferTimeout;
     }
 
+    public TimeValue getClusterRemoteSegmentTransferTimeout() {
+        return clusterRemoteSegmentTransferTimeout;
+    }
+
     private void setClusterRemoteTranslogTransferTimeout(TimeValue clusterRemoteTranslogTransferTimeout) {
         this.clusterRemoteTranslogTransferTimeout = clusterRemoteTranslogTransferTimeout;
     }
 
+    private void setClusterRemoteSegmentTransferTimeout(TimeValue clusterRemoteSegmentTransferTimeout) {
+        this.clusterRemoteSegmentTransferTimeout = clusterRemoteSegmentTransferTimeout;
+    }
+
     @ExperimentalApi
     public RemoteStoreEnums.PathType getPathType() {
         return pathType;

diff --git a/server/src/test/java/org/opensearch/index/shard/RemoteStoreRefreshListenerTests.java b/server/src/test/java/org/opensearch/index/shard/RemoteStoreRefreshListenerTests.java
@@ -23,6 +23,7 @@
 import org.opensearch.common.lease.Releasable;
 import org.opensearch.common.settings.ClusterSettings;
 import org.opensearch.common.settings.Settings;
+import org.opensearch.common.unit.TimeValue;
 import org.opensearch.core.action.ActionListener;
 import org.opensearch.core.index.shard.ShardId;
 import org.opensearch.index.engine.InternalEngineFactory;
@@ -34,6 +35,7 @@
 import org.opensearch.index.store.RemoteSegmentStoreDirectory.MetadataFilenameUtils;
 import org.opensearch.index.store.Store;
 import org.opensearch.index.store.lockmanager.RemoteStoreLockManager;
+import org.opensearch.indices.DefaultRemoteStoreSettings;
 import org.opensearch.indices.RemoteStoreSettings;
 import org.opensearch.indices.replication.checkpoint.SegmentReplicationCheckpointPublisher;
 import org.opensearch.indices.replication.common.ReplicationType;
@@ -91,7 +93,12 @@ public void setup(boolean primary, int numberOfDocs) throws IOException {
         remoteStoreStatsTrackerFactory = new RemoteStoreStatsTrackerFactory(clusterService, Settings.EMPTY);
         remoteStoreStatsTrackerFactory.afterIndexShardCreated(indexShard);
         RemoteSegmentTransferTracker tracker = remoteStoreStatsTrackerFactory.getRemoteSegmentTransferTracker(indexShard.shardId());
-        remoteStoreRefreshListener = new RemoteStoreRefreshListener(indexShard, SegmentReplicationCheckpointPublisher.EMPTY, tracker);
+        remoteStoreRefreshListener = new RemoteStoreRefreshListener(
+            indexShard,
+            SegmentReplicationCheckpointPublisher.EMPTY,
+            tracker,
+            DefaultRemoteStoreSettings.INSTANCE
+        );
     }
 
     private void indexDocs(int startDocId, int numberOfDocs) throws IOException {
@@ -176,7 +183,12 @@ public void testRemoteDirectoryInitThrowsException() throws IOException {
         when(remoteStore.directory()).thenReturn(remoteStoreFilterDirectory);
 
         // Since the thrown IOException is caught in the constructor, ctor should be invoked successfully.
-        new RemoteStoreRefreshListener(shard, SegmentReplicationCheckpointPublisher.EMPTY, mock(RemoteSegmentTransferTracker.class));
+        new RemoteStoreRefreshListener(
+            shard,
+            SegmentReplicationCheckpointPublisher.EMPTY,
+            mock(RemoteSegmentTransferTracker.class),
+            DefaultRemoteStoreSettings.INSTANCE
+        );
 
         // Validate that the stream of metadata file of remoteMetadataDirectory has been opened only once and the
         // listFilesByPrefixInLexicographicOrder has been called twice.
@@ -371,6 +383,33 @@ public void testRefreshSuccessOnSecondAttempt() throws Exception {
         assertNoLagAndTotalUploadsFailed(segmentTracker, 1);
     }
 
+    public void testSegmentUploadTimeout() throws Exception {
+        // This covers the case where segment upload fails due to timeout
+        int succeedOnAttempt = 1;
+        // We spy on IndexShard.isPrimaryStarted() to validate that we have tried running remote time as per the expectation.
+        CountDownLatch refreshCountLatch = new CountDownLatch(succeedOnAttempt);
+        CountDownLatch successLatch = new CountDownLatch(2);
+        Tuple<RemoteStoreRefreshListener, RemoteStoreStatsTrackerFactory> tuple = mockIndexShardWithRetryAndScheduleRefresh(
+            succeedOnAttempt,
+            refreshCountLatch,
+            successLatch,
+            1,
+            new CountDownLatch(0),
+            true,
+            true
+        );
+        assertBusy(() -> assertEquals(0, refreshCountLatch.getCount()));
+        assertBusy(() -> assertEquals(1, successLatch.getCount()));
+        RemoteStoreStatsTrackerFactory trackerFactory = tuple.v2();
+        RemoteSegmentTransferTracker segmentTracker = trackerFactory.getRemoteSegmentTransferTracker(indexShard.shardId());
+        assertBusy(() -> {
+            assertTrue(segmentTracker.getTotalUploadsFailed() > 1);
+            assertTrue(segmentTracker.getTotalUploadsSucceeded() < 2);
+        });
+        // shutdown threadpool for avoid leaking threads
+        indexShard.getThreadPool().shutdownNow();
+    }
+
     /**
      * Tests retry flow after snapshot and metadata files have been uploaded to remote store in the failed attempt.
      * Snapshot and metadata files created in failed attempt should not break retry.
@@ -470,6 +509,7 @@ public void testRefreshFailedDueToPrimaryTermMisMatch() throws Exception {
             successLatch,
             checkpointPublishSucceedOnAttempt,
             reachedCheckpointPublishLatch,
+            false,
             false
         );
 
@@ -521,7 +561,8 @@ private Tuple<RemoteStoreRefreshListener, RemoteStoreStatsTrackerFactory> mockIn
             successLatch,
             succeedCheckpointPublishOnAttempt,
             reachedCheckpointPublishLatch,
-            true
+            true,
+            false
         );
     }
 
@@ -531,7 +572,8 @@ private Tuple<RemoteStoreRefreshListener, RemoteStoreStatsTrackerFactory> mockIn
         CountDownLatch successLatch,
         int succeedCheckpointPublishOnAttempt,
         CountDownLatch reachedCheckpointPublishLatch,
-        boolean mockPrimaryTerm
+        boolean mockPrimaryTerm,
+        boolean testUploadTimeout
     ) throws IOException {
         // Create index shard that we will be using to mock different methods in IndexShard for the unit test
         indexShard = newStartedShard(
@@ -565,9 +607,22 @@ private Tuple<RemoteStoreRefreshListener, RemoteStoreStatsTrackerFactory> mockIn
         // Mock (RemoteSegmentStoreDirectory) ((FilterDirectory) ((FilterDirectory) indexShard.remoteStore().directory())
         Store remoteStore = mock(Store.class);
         when(shard.remoteStore()).thenReturn(remoteStore);
-        RemoteSegmentStoreDirectory remoteSegmentStoreDirectory =
-            (RemoteSegmentStoreDirectory) ((FilterDirectory) ((FilterDirectory) indexShard.remoteStore().directory()).getDelegate())
-                .getDelegate();
+        RemoteSegmentStoreDirectory remoteSegmentStoreDirectory;
+        RemoteDirectory remoteDirectory = mock(RemoteDirectory.class);
+
+        if (testUploadTimeout) {
+            remoteSegmentStoreDirectory = new RemoteSegmentStoreDirectory(
+                remoteDirectory,
+                mock(RemoteDirectory.class),
+                mock(RemoteStoreLockManager.class),
+                indexShard.getThreadPool(),
+                indexShard.shardId
+            );
+        } else {
+            remoteSegmentStoreDirectory = (RemoteSegmentStoreDirectory) ((FilterDirectory) ((FilterDirectory) indexShard.remoteStore()
+                .directory()).getDelegate()).getDelegate();
+        }
+
         FilterDirectory remoteStoreFilterDirectory = new TestFilterDirectory(new TestFilterDirectory(remoteSegmentStoreDirectory));
         when(remoteStore.directory()).thenReturn(remoteStoreFilterDirectory);
 
@@ -639,7 +694,28 @@ private Tuple<RemoteStoreRefreshListener, RemoteStoreStatsTrackerFactory> mockIn
         RemoteStoreSettings remoteStoreSettings = mock(RemoteStoreSettings.class);
         when(remoteStoreSettings.getMinRemoteSegmentMetadataFiles()).thenReturn(10);
         when(shard.getRemoteStoreSettings()).thenReturn(remoteStoreSettings);
-        RemoteStoreRefreshListener refreshListener = new RemoteStoreRefreshListener(shard, emptyCheckpointPublisher, tracker);
+        if (testUploadTimeout) {
+            when(remoteStoreSettings.getClusterRemoteSegmentTransferTimeout()).thenReturn(TimeValue.timeValueMillis(10));
+            doAnswer(invocation -> {
+                ActionListener<Void> actionListener = invocation.getArgument(5);
+                indexShard.getThreadPool().executor(ThreadPool.Names.GENERIC).execute(() -> {
+                    try {
+                        Thread.sleep(30000);
+                    } catch (InterruptedException e) {
+                        logger.warn("copyFrom thread interrupted during sleep");
+                    }
+                    actionListener.onResponse(null);
+                });
+                return true;
+            }).when(remoteDirectory).copyFrom(any(), any(), any(), any(), any(), any(ActionListener.class), any(Boolean.class));
+        }
+
+        RemoteStoreRefreshListener refreshListener = new RemoteStoreRefreshListener(
+            shard,
+            emptyCheckpointPublisher,
+            tracker,
+            remoteStoreSettings
+        );
         refreshListener.afterRefresh(true);
         return Tuple.tuple(refreshListener, remoteStoreStatsTrackerFactory);
     }