Vladsz83 commented on code in PR #11391: URL: https://github.com/apache/ignite/pull/11391#discussion_r1677897021
########## modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/SnapshotFullCheckDistributedProcess.java: ########## @@ -0,0 +1,549 @@ +/* + * 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.File; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +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.ConcurrentHashMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.ThreadLocalRandom; +import java.util.function.Function; +import java.util.stream.Collectors; +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.IgniteException; +import org.apache.ignite.IgniteLogger; +import org.apache.ignite.cluster.ClusterNode; +import org.apache.ignite.events.DiscoveryEvent; +import org.apache.ignite.internal.GridKernalContext; +import org.apache.ignite.internal.IgniteInternalFuture; +import org.apache.ignite.internal.cluster.ClusterTopologyCheckedException; +import org.apache.ignite.internal.management.cache.IdleVerifyResultV2; +import org.apache.ignite.internal.management.cache.PartitionKeyV2; +import org.apache.ignite.internal.management.cache.VerifyBackupPartitionsTaskV2; +import org.apache.ignite.internal.processors.cache.verify.PartitionHashRecordV2; +import org.apache.ignite.internal.util.distributed.DistributedProcess; +import org.apache.ignite.internal.util.future.GridFinishedFuture; +import org.apache.ignite.internal.util.future.GridFutureAdapter; +import org.apache.ignite.internal.util.typedef.F; +import org.apache.ignite.internal.util.typedef.internal.CU; +import org.jetbrains.annotations.Nullable; + +import static org.apache.ignite.events.EventType.EVT_NODE_FAILED; +import static org.apache.ignite.events.EventType.EVT_NODE_LEFT; +import static org.apache.ignite.internal.util.distributed.DistributedProcess.DistributedProcessType.SNAPSHOT_CHECK_METAS; +import static org.apache.ignite.internal.util.distributed.DistributedProcess.DistributedProcessType.SNAPSHOT_VALIDATE_PARTS; + +/** Distributed process of snapshot full checking (with the partition hashes). */ +public class SnapshotFullCheckDistributedProcess { + /** */ + private static final IgniteInternalFuture FINISHED_FUT = new GridFinishedFuture<>(); + + /** */ + private final IgniteLogger log; + + /** */ + private final GridKernalContext kctx; + + /** Snapshot check requests per snapshot on every node. */ + final Map<String, SnapshotFullCheckOperationRequest> requests = new ConcurrentHashMap<>(); + + /** Cluster-wide operation futures per snapshot called from current node. */ + private final Map<UUID, GridFutureAdapter<SnapshotPartitionsVerifyTaskResult>> clusterOpFuts = new ConcurrentHashMap<>(); + + /** Check metas first phase subprocess. */ + private final DistributedProcess<SnapshotFullCheckOperationRequest, ArrayList<SnapshotMetadata>> phase1CheckMetas; + + /** Partition hashes second phase subprocess. */ + private final DistributedProcess<SnapshotFullCheckOperationRequest, HashMap<PartitionKeyV2, PartitionHashRecordV2>> phase2PartsHashes; + + /** */ + public SnapshotFullCheckDistributedProcess(GridKernalContext kctx) { + this.kctx = kctx; + + log = kctx.log(getClass()); + + phase1CheckMetas = new DistributedProcess<>(kctx, SNAPSHOT_CHECK_METAS, this::prepareAndCheckMetas, + this::reducePreparationAndMetasCheck); + + phase2PartsHashes = new DistributedProcess<>(kctx, SNAPSHOT_VALIDATE_PARTS, this::validateParts, + this::reduceValidatePartsAndFinish); + + kctx.event().addLocalEventListener((evt) -> nodeLeft(((DiscoveryEvent)evt).eventNode()), EVT_NODE_FAILED, EVT_NODE_LEFT); Review Comment: I don't think that a code duplication definitely means a problem. IMHO, much worse is a violation of the principles like the encapsulation. SnapshotManager ignores clients: `if (ctx.clientNode()) return;` It won't deliver events to the check process in some cases. Why? Why it should decide what to do with an event instead of the dedicated process? Client can start snapshot checking too. It keeps the launch future, results and partial results. It can block concurrent check launch too. It requires cleaning too. Several tests fail on it. Client must know about a node leave. But IgniteSnasphot manager doesn't allow. As I remember, I fixed a couple of similar bugs in the snapshots: we ignored client and non-baseline node. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
