alex-plekhanov commented on a change in pull request #6554: IGNITE-11073: Backup page store manager, initial URL: https://github.com/apache/ignite/pull/6554#discussion_r377138133
########## File path: modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/SnapshotTask.java ########## @@ -0,0 +1,929 @@ +/* + * 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.processors.cache.persistence.snapshot; + +import java.io.Closeable; +import java.io.File; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.Set; +import java.util.UUID; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.Executor; +import java.util.concurrent.atomic.AtomicIntegerArray; +import java.util.concurrent.locks.ReadWriteLock; +import java.util.concurrent.locks.ReentrantReadWriteLock; +import java.util.function.BooleanSupplier; +import java.util.function.Consumer; +import java.util.stream.Collectors; +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.IgniteLogger; +import org.apache.ignite.configuration.CacheConfiguration; +import org.apache.ignite.internal.IgniteInternalFuture; +import org.apache.ignite.internal.pagemem.PageIdUtils; +import org.apache.ignite.internal.pagemem.store.PageStore; +import org.apache.ignite.internal.pagemem.store.PageWriteListener; +import org.apache.ignite.internal.processors.cache.CacheGroupContext; +import org.apache.ignite.internal.processors.cache.GridCacheSharedContext; +import org.apache.ignite.internal.processors.cache.distributed.dht.topology.GridDhtLocalPartition; +import org.apache.ignite.internal.processors.cache.distributed.dht.topology.GridDhtPartitionState; +import org.apache.ignite.internal.processors.cache.persistence.DbCheckpointListener; +import org.apache.ignite.internal.processors.cache.persistence.file.FileIO; +import org.apache.ignite.internal.processors.cache.persistence.file.FileIOFactory; +import org.apache.ignite.internal.processors.cache.persistence.file.FilePageStoreManager; +import org.apache.ignite.internal.processors.cache.persistence.partstate.GroupPartitionId; +import org.apache.ignite.internal.processors.cache.persistence.partstate.PagesAllocationRange; +import org.apache.ignite.internal.processors.cache.persistence.partstate.PartitionAllocationMap; +import org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO; +import org.apache.ignite.internal.processors.cache.persistence.wal.crc.FastCrc; +import org.apache.ignite.internal.util.GridIntIterator; +import org.apache.ignite.internal.util.GridIntList; +import org.apache.ignite.internal.util.future.GridFutureAdapter; +import org.apache.ignite.internal.util.lang.IgniteThrowableRunner; +import org.apache.ignite.internal.util.tostring.GridToStringExclude; +import org.apache.ignite.internal.util.typedef.internal.A; +import org.apache.ignite.internal.util.typedef.internal.CU; +import org.apache.ignite.internal.util.typedef.internal.S; +import org.apache.ignite.internal.util.typedef.internal.U; +import org.jetbrains.annotations.Nullable; + +import static org.apache.ignite.internal.pagemem.PageIdAllocator.INDEX_PARTITION; +import static org.apache.ignite.internal.processors.cache.persistence.file.FilePageStoreManager.cacheDirName; +import static org.apache.ignite.internal.processors.cache.persistence.file.FilePageStoreManager.cacheWorkDir; +import static org.apache.ignite.internal.processors.cache.persistence.file.FilePageStoreManager.getPartitionFile; +import static org.apache.ignite.internal.processors.cache.persistence.snapshot.IgniteSnapshotManager.getPartionDeltaFile; +import static org.apache.ignite.internal.processors.cache.persistence.snapshot.IgniteSnapshotManager.relativeNodePath; + +/** + * + */ +class SnapshotTask implements DbCheckpointListener, Closeable { + /** Shared context. */ + private final GridCacheSharedContext<?, ?> cctx; + + /** Ignite logger */ + private final IgniteLogger log; + + /** Factory to working with delta as file storage. */ + private final FileIOFactory ioFactory; + + /** Node id which cause snapshot operation. */ + private final UUID srcNodeId; + + /** Unique identifier of snapshot process. */ + private final String snpName; + + /** Snapshot working directory on file system. */ + private final File tmpTaskWorkDir; + + /** Service to perform partitions copy. */ + private final Executor exec; + + /** + * The length of file size per each cache partiton file. + * Partition has value greater than zero only for partitons in OWNING state. + * Information collected under checkpoint write lock. + */ + private final Map<GroupPartitionId, Long> partFileLengths = new HashMap<>(); + + /** + * Map of partitions to snapshot and theirs corresponding delta PageStores. + * Writers are pinned to the snapshot context due to controlling partition + * processing supplier. + */ + private final Map<GroupPartitionId, PageStoreSerialWriter> partDeltaWriters = new HashMap<>(); + + /** Future of result completion. */ + @GridToStringExclude + private final SnapshotTaskFuture snpFut = new SnapshotTaskFuture(() -> { Review comment: It's 1:1 relation between snapshot future and snapshot task. Do we really need snapshot future as separate entity? Can we rework snapshot task to work as future? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
