| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.ignite.internal.index; |
| |
| import static org.apache.ignite.internal.util.IgniteUtils.inBusyLockSafe; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.function.Predicate; |
| import org.apache.ignite.internal.catalog.descriptors.CatalogIndexStatus; |
| import org.apache.ignite.internal.close.ManuallyCloseable; |
| import org.apache.ignite.internal.replicator.ReplicaService; |
| import org.apache.ignite.internal.storage.MvPartitionStorage; |
| import org.apache.ignite.internal.storage.RowId; |
| import org.apache.ignite.internal.storage.index.IndexStorage; |
| import org.apache.ignite.internal.table.distributed.command.BuildIndexCommand; |
| import org.apache.ignite.internal.table.distributed.replication.request.BuildIndexReplicaRequest; |
| import org.apache.ignite.internal.util.IgniteSpinBusyLock; |
| import org.apache.ignite.network.ClusterNode; |
| |
| /** |
| * Component that is responsible for building an index for a specific partition. |
| * |
| * <p>Approximate index building algorithm:</p> |
| * <ul> |
| * <li>If the index has not yet been built ({@link IndexStorage#getNextRowIdToBuild()} {@code != null}) or is not in the process of |
| * being built, then an asynchronous task is added to build it.</li> |
| * <li>Index building task generates batches of {@link RowId} (by using {@link IndexStorage#getNextRowIdToBuild()}) and sends these |
| * batch to the primary replica (only the primary replica is expected to start building the index) so that the corresponding replication |
| * group builds indexes for the transferred batch.</li> |
| * <li>Subsequent batches will be sent only after the current batch has been processed and until |
| * {@link IndexStorage#getNextRowIdToBuild()} {@code != null}.</li> |
| * </ul> |
| * |
| * <p>Notes: It is expected that only the primary replica will run tasks to build the index, and if the replica loses primacy, it will stop |
| * the task to build the index, and this will be done by an external component.</p> |
| */ |
| class IndexBuilder implements ManuallyCloseable { |
| /** Batch size of row IDs to build the index. */ |
| static final int BATCH_SIZE = 100; |
| |
| private final Executor executor; |
| |
| private final ReplicaService replicaService; |
| |
| private final Map<IndexBuildTaskId, IndexBuildTask> indexBuildTaskById = new ConcurrentHashMap<>(); |
| |
| private final IgniteSpinBusyLock busyLock = new IgniteSpinBusyLock(); |
| |
| private final AtomicBoolean closeGuard = new AtomicBoolean(); |
| |
| private final List<IndexBuildCompletionListener> listeners = new CopyOnWriteArrayList<>(); |
| |
| /** Constructor. */ |
| IndexBuilder(Executor executor, ReplicaService replicaService) { |
| this.replicaService = replicaService; |
| this.executor = executor; |
| } |
| |
| /** |
| * Schedules building the index if it is not already built or is not yet in progress. |
| * |
| * <p>Notes:</p> |
| * <ul> |
| * <li>Index is built in batches using {@link BuildIndexReplicaRequest}, which are then transformed into {@link BuildIndexCommand} |
| * on the replica, batches are sent sequentially.</li> |
| * <li>It is expected that the index building is triggered by the primary replica.</li> |
| * <li>If the index has already been built or after the building is complete, {@link IndexBuildCompletionListener#onBuildCompletion} |
| * will be notified.</li> |
| * </ul> |
| * |
| * @param tableId Table ID. |
| * @param partitionId Partition ID. |
| * @param indexId Index ID. |
| * @param indexStorage Index storage to build. |
| * @param partitionStorage Multi-versioned partition storage. |
| * @param node Node to which requests to build the index will be sent. |
| * @param enlistmentConsistencyToken Enlistment consistency token is used to check that the lease is still actual while the message goes |
| * to the replica. |
| * @param creationCatalogVersion Catalog version in which the index was created. |
| */ |
| public void scheduleBuildIndex( |
| int tableId, |
| int partitionId, |
| int indexId, |
| IndexStorage indexStorage, |
| MvPartitionStorage partitionStorage, |
| ClusterNode node, |
| long enlistmentConsistencyToken, |
| int creationCatalogVersion |
| ) { |
| inBusyLockSafe(busyLock, () -> { |
| if (indexStorage.getNextRowIdToBuild() == null) { |
| for (IndexBuildCompletionListener listener : listeners) { |
| listener.onBuildCompletion(indexId, tableId, partitionId); |
| } |
| |
| return; |
| } |
| |
| IndexBuildTaskId taskId = new IndexBuildTaskId(tableId, partitionId, indexId); |
| |
| IndexBuildTask newTask = new IndexBuildTask( |
| taskId, |
| indexStorage, |
| partitionStorage, |
| replicaService, |
| executor, |
| busyLock, |
| BATCH_SIZE, |
| node, |
| listeners, |
| enlistmentConsistencyToken, |
| creationCatalogVersion, |
| false |
| ); |
| |
| putAndStartTaskIfAbsent(taskId, newTask); |
| }); |
| } |
| |
| /** |
| * Schedules building an {@link CatalogIndexStatus#AVAILABLE available} index after disaster recovery, if it is not already built or is |
| * not yet in progress. |
| * |
| * <p>Notes:</p> |
| * <ul> |
| * <li>Index is built in batches using {@link BuildIndexReplicaRequest}, which are then transformed into {@link BuildIndexCommand} |
| * on the replica, batches are sent sequentially.</li> |
| * <li>It is expected that the index building is triggered by the primary replica.</li> |
| * <li>If the index has already been built, then nothing will happen.</li> |
| * <li>After index building is complete, {@link IndexBuildCompletionListener#onBuildCompletionAfterDisasterRecovery} will be |
| * notified.</li> |
| * </ul> |
| * |
| * @param tableId Table ID. |
| * @param partitionId Partition ID. |
| * @param indexId Index ID. |
| * @param indexStorage Index storage to build. |
| * @param partitionStorage Multi-versioned partition storage. |
| * @param node Node to which requests to build the index will be sent. |
| * @param enlistmentConsistencyToken Enlistment consistency token is used to check that the lease is still actual while the |
| * message goes to the replica. |
| * @param creationCatalogVersion Catalog version in which the index was created. |
| */ |
| public void scheduleBuildIndexAfterDisasterRecovery( |
| int tableId, |
| int partitionId, |
| int indexId, |
| IndexStorage indexStorage, |
| MvPartitionStorage partitionStorage, |
| ClusterNode node, |
| long enlistmentConsistencyToken, |
| int creationCatalogVersion |
| ) { |
| inBusyLockSafe(busyLock, () -> { |
| if (indexStorage.getNextRowIdToBuild() == null) { |
| return; |
| } |
| |
| IndexBuildTaskId taskId = new IndexBuildTaskId(tableId, partitionId, indexId); |
| |
| IndexBuildTask newTask = new IndexBuildTask( |
| taskId, |
| indexStorage, |
| partitionStorage, |
| replicaService, |
| executor, |
| busyLock, |
| BATCH_SIZE, |
| node, |
| listeners, |
| enlistmentConsistencyToken, |
| creationCatalogVersion, |
| true |
| ); |
| |
| putAndStartTaskIfAbsent(taskId, newTask); |
| }); |
| } |
| |
| /** |
| * Stops index building if it is in progress. |
| * |
| * @param tableId Table ID. |
| * @param partitionId Partition ID. |
| * @param indexId Index ID. |
| */ |
| public void stopBuildIndex(int tableId, int partitionId, int indexId) { |
| inBusyLockSafe(busyLock, () -> { |
| IndexBuildTask removed = indexBuildTaskById.remove(new IndexBuildTaskId(tableId, partitionId, indexId)); |
| |
| if (removed != null) { |
| removed.stop(); |
| } |
| }); |
| } |
| |
| /** |
| * Stops building all indexes (for a table partition) if they are in progress. |
| * |
| * @param tableId Table ID. |
| * @param partitionId Partition ID. |
| */ |
| public void stopBuildingIndexes(int tableId, int partitionId) { |
| stopBuildingIndexes(taskId -> tableId == taskId.getTableId() && partitionId == taskId.getPartitionId()); |
| } |
| |
| /** |
| * Stops building indexes for all table partition if they are in progress. |
| * |
| * @param indexId Index ID. |
| */ |
| public void stopBuildingIndexes(int indexId) { |
| stopBuildingIndexes(taskId -> indexId == taskId.getIndexId()); |
| } |
| |
| private void stopBuildingIndexes(Predicate<IndexBuildTaskId> stopBuildIndexPredicate) { |
| for (Iterator<Entry<IndexBuildTaskId, IndexBuildTask>> it = indexBuildTaskById.entrySet().iterator(); it.hasNext(); ) { |
| inBusyLockSafe(busyLock, () -> { |
| Entry<IndexBuildTaskId, IndexBuildTask> entry = it.next(); |
| |
| if (stopBuildIndexPredicate.test(entry.getKey())) { |
| it.remove(); |
| |
| entry.getValue().stop(); |
| } |
| }); |
| } |
| } |
| |
| @Override |
| public void close() { |
| if (!closeGuard.compareAndSet(false, true)) { |
| return; |
| } |
| |
| busyLock.block(); |
| } |
| |
| /** Adds a listener. */ |
| public void listen(IndexBuildCompletionListener listener) { |
| listeners.add(listener); |
| } |
| |
| /** Removes a listener. */ |
| public void stopListen(IndexBuildCompletionListener listener) { |
| listeners.remove(listener); |
| } |
| |
| private void putAndStartTaskIfAbsent(IndexBuildTaskId taskId, IndexBuildTask task) { |
| IndexBuildTask previousTask = indexBuildTaskById.putIfAbsent(taskId, task); |
| |
| if (previousTask != null) { |
| // Index building is already in progress. |
| return; |
| } |
| |
| try { |
| task.start(); |
| } finally { |
| task.getTaskFuture().whenComplete((unused, throwable) -> indexBuildTaskById.remove(taskId)); |
| } |
| } |
| } |