peterxcli commented on code in PR #7951: URL: https://github.com/apache/ozone/pull/7951#discussion_r2039519038
########## hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/safemode/ECContainerSafeModeRule.java: ########## @@ -0,0 +1,249 @@ +/* + * 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.hadoop.hdds.scm.safemode; + +import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_SCM_SAFEMODE_THRESHOLD_PCT; +import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_SCM_SAFEMODE_THRESHOLD_PCT_DEFAULT; + +import com.google.common.annotations.VisibleForTesting; +import com.google.common.base.Preconditions; +import com.google.common.collect.Sets; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.UUID; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.atomic.AtomicLong; +import java.util.stream.Collectors; +import org.apache.hadoop.hdds.client.ReplicationConfig; +import org.apache.hadoop.hdds.conf.ConfigurationSource; +import org.apache.hadoop.hdds.protocol.DatanodeDetails; +import org.apache.hadoop.hdds.protocol.proto.HddsProtos.LifeCycleState; +import org.apache.hadoop.hdds.protocol.proto.HddsProtos.ReplicationType; +import org.apache.hadoop.hdds.scm.container.ContainerID; +import org.apache.hadoop.hdds.scm.container.ContainerInfo; +import org.apache.hadoop.hdds.scm.container.ContainerManager; +import org.apache.hadoop.hdds.scm.container.ContainerNotFoundException; +import org.apache.hadoop.hdds.scm.events.SCMEvents; +import org.apache.hadoop.hdds.scm.server.SCMDatanodeProtocolServer.NodeRegistrationContainerReport; +import org.apache.hadoop.hdds.server.events.EventQueue; +import org.apache.hadoop.hdds.server.events.TypedEvent; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Safe mode rule for EC containers. + */ +public class ECContainerSafeModeRule extends SafeModeExitRule<NodeRegistrationContainerReport> { + + private static final Logger LOG = LoggerFactory.getLogger(ECContainerSafeModeRule.class); + private static final String NAME = "ECContainerSafeModeRule"; + private static final int DEFAULT_MIN_REPLICA = 1; + + private final ContainerManager containerManager; + private final double safeModeCutoff; + private final Set<Long> ecContainers; + private final Map<Long, Set<UUID>> ecContainerDNsMap; + private final AtomicLong ecContainerWithMinReplicas; + private double ecMaxContainer; + + public ECContainerSafeModeRule(EventQueue eventQueue, + ConfigurationSource conf, + ContainerManager containerManager, + SCMSafeModeManager manager) { + super(manager, NAME, eventQueue); + this.safeModeCutoff = getSafeModeCutoff(conf); + this.containerManager = containerManager; + this.ecContainers = new HashSet<>(); + this.ecContainerDNsMap = new ConcurrentHashMap<>(); + this.ecContainerWithMinReplicas = new AtomicLong(0); + initializeRule(); + } + + private static double getSafeModeCutoff(ConfigurationSource conf) { + final double cutoff = conf.getDouble(HDDS_SCM_SAFEMODE_THRESHOLD_PCT, + HDDS_SCM_SAFEMODE_THRESHOLD_PCT_DEFAULT); + Preconditions.checkArgument((cutoff >= 0.0 && cutoff <= 1.0), + HDDS_SCM_SAFEMODE_THRESHOLD_PCT + " value should be >= 0.0 and <= 1.0"); + return cutoff; + } + + @Override + protected TypedEvent<NodeRegistrationContainerReport> getEventType() { + return SCMEvents.CONTAINER_REGISTRATION_REPORT; + } + + @Override + protected synchronized boolean validate() { + if (validateBasedOnReportProcessing()) { + return getCurrentContainerThreshold() >= safeModeCutoff; + } + + final List<ContainerInfo> containers = containerManager.getContainers( + ReplicationType.EC); + + return containers.stream() + .filter(this::isClosed) + .map(ContainerInfo::containerID) + .noneMatch(this::isMissing); + } + + /** + * Checks if the container has at least the minimum required number of replicas. + */ + private boolean isMissing(ContainerID id) { + try { + int minReplica = getMinReplica(id.getId()); + return containerManager.getContainerReplicas(id).size() < minReplica; + } catch (ContainerNotFoundException ex) { + /* + * This should never happen, in case this happens the container + * somehow got removed from SCM. + * Safemode rule doesn't have to log/fix this. We will just exclude this + * from the rule validation. + */ + return false; + } + } + + @VisibleForTesting + public double getCurrentContainerThreshold() { + return ecMaxContainer == 0 ? 1 : (ecContainerWithMinReplicas.doubleValue() / ecMaxContainer); + } + + /** + * Get the minimum replica. + * + * @param pContainerID containerID + * @return MinReplica. + */ + private int getMinReplica(long pContainerID) { + try { + ContainerID containerID = ContainerID.valueOf(pContainerID); + ContainerInfo container = containerManager.getContainer(containerID); + ReplicationConfig replicationConfig = container.getReplicationConfig(); + return replicationConfig.getMinimumNodes(); + } catch (Exception e) { + LOG.error("containerId = {} not found.", pContainerID, e); + } + + return DEFAULT_MIN_REPLICA; + } + + @Override + protected void process(NodeRegistrationContainerReport report) { + DatanodeDetails datanodeDetails = report.getDatanodeDetails(); + UUID datanodeUUID = datanodeDetails.getUuid(); + + report.getReport().getReportsList().forEach(c -> { + long containerID = c.getContainerID(); + if (ecContainers.contains(containerID)) { + putInContainerDNsMap(containerID, ecContainerDNsMap, datanodeUUID); + recordReportedContainer(containerID); Review Comment: I think that's existing logic. If we do need the dedup, then it can be addressed with another jira ticket. @nandakumar131 Please help to check if we really need this. Thanks. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
