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Posted to issues@ozone.apache.org by GitBox <gi...@apache.org> on 2022/08/23 18:03:00 UTC
[GitHub] [ozone] umamaheswararao commented on a diff in pull request #3634: HDDS-7058. EC: ReplicationManager - Implement Ratis Container healthCheck
umamaheswararao commented on code in PR #3634:
URL: https://github.com/apache/ozone/pull/3634#discussion_r952814919
##########
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/replication/RatisContainerHealthCheck.java:
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@@ -0,0 +1,115 @@
+/*
+ * 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
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * 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.container.replication;
+
+import org.apache.hadoop.hdds.protocol.DatanodeDetails;
+import org.apache.hadoop.hdds.scm.ContainerPlacementStatus;
+import org.apache.hadoop.hdds.scm.PlacementPolicy;
+import org.apache.hadoop.hdds.scm.container.ContainerInfo;
+import org.apache.hadoop.hdds.scm.container.ContainerReplica;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * Class to determine the health state of a Ratis Container. Given the container
+ * and current replica details, along with replicas pending add and delete,
+ * this class will return a ContainerHealthResult indicating if the container
+ * is healthy, or under / over replicated etc.
+ */
+public class RatisContainerHealthCheck implements ContainerHealthCheck {
+ public static final Logger LOG =
+ LoggerFactory.getLogger(RatisContainerHealthCheck.class);
+
+ /**
+ * PlacementPolicy which is used to identify where a container
+ * should be replicated.
+ */
+ private final PlacementPolicy ratisContainerPlacement;
+
+ public RatisContainerHealthCheck(final PlacementPolicy containerPlacement) {
+ this.ratisContainerPlacement = containerPlacement;
+ }
+
+ @Override
+ public ContainerHealthResult checkHealth(ContainerInfo container,
+ Set<ContainerReplica> replicas,
+ List<ContainerReplicaOp> replicaPendingOps,
+ int remainingRedundancyForMaintenance) {
+ int pendingAdd = 0;
+ int pendingDelete = 0;
+ for (ContainerReplicaOp op : replicaPendingOps) {
+ if (op.getOpType() == ContainerReplicaOp.PendingOpType.ADD) {
+ pendingAdd++;
+ } else if (op.getOpType() == ContainerReplicaOp.PendingOpType.DELETE) {
+ pendingDelete++;
+ } else {
+ LOG.warn("unknown opType of op : {}", op);
+ //TODO: return an appropriate state
+ return new ContainerHealthResult.UnHealthyResult(container);
+ }
+ }
+ int requiredNodes = container.getReplicationConfig().getRequiredNodes();
+
+ RatisContainerReplicaCount replicaCount =
+ new RatisContainerReplicaCount(container, replicas, pendingAdd,
+ pendingDelete, requiredNodes, remainingRedundancyForMaintenance);
+
+ ContainerPlacementStatus placementStatus =
+ getPlacementStatus(replicas, requiredNodes);
+
+ boolean sufficientlyReplicated = replicaCount.isSufficientlyReplicated();
+ boolean isPolicySatisfied = placementStatus.isPolicySatisfied();
+ if (!sufficientlyReplicated || !isPolicySatisfied) {
Review Comment:
Probably misreplicated state should be given low priority compared to Underplicated state. So, is it make sense to have misreplicated status once under/overreplicated status checks done?
##########
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/replication/RatisContainerHealthCheck.java:
##########
@@ -0,0 +1,115 @@
+/*
+ * 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
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * 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.container.replication;
+
+import org.apache.hadoop.hdds.protocol.DatanodeDetails;
+import org.apache.hadoop.hdds.scm.ContainerPlacementStatus;
+import org.apache.hadoop.hdds.scm.PlacementPolicy;
+import org.apache.hadoop.hdds.scm.container.ContainerInfo;
+import org.apache.hadoop.hdds.scm.container.ContainerReplica;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * Class to determine the health state of a Ratis Container. Given the container
+ * and current replica details, along with replicas pending add and delete,
+ * this class will return a ContainerHealthResult indicating if the container
+ * is healthy, or under / over replicated etc.
+ */
+public class RatisContainerHealthCheck implements ContainerHealthCheck {
+ public static final Logger LOG =
+ LoggerFactory.getLogger(RatisContainerHealthCheck.class);
+
+ /**
+ * PlacementPolicy which is used to identify where a container
+ * should be replicated.
+ */
+ private final PlacementPolicy ratisContainerPlacement;
+
+ public RatisContainerHealthCheck(final PlacementPolicy containerPlacement) {
+ this.ratisContainerPlacement = containerPlacement;
+ }
+
+ @Override
+ public ContainerHealthResult checkHealth(ContainerInfo container,
+ Set<ContainerReplica> replicas,
+ List<ContainerReplicaOp> replicaPendingOps,
+ int remainingRedundancyForMaintenance) {
+ int pendingAdd = 0;
+ int pendingDelete = 0;
+ for (ContainerReplicaOp op : replicaPendingOps) {
+ if (op.getOpType() == ContainerReplicaOp.PendingOpType.ADD) {
+ pendingAdd++;
+ } else if (op.getOpType() == ContainerReplicaOp.PendingOpType.DELETE) {
+ pendingDelete++;
+ } else {
+ LOG.warn("unknown opType of op : {}", op);
+ //TODO: return an appropriate state
+ return new ContainerHealthResult.UnHealthyResult(container);
+ }
+ }
+ int requiredNodes = container.getReplicationConfig().getRequiredNodes();
+
+ RatisContainerReplicaCount replicaCount =
+ new RatisContainerReplicaCount(container, replicas, pendingAdd,
+ pendingDelete, requiredNodes, remainingRedundancyForMaintenance);
+
+ ContainerPlacementStatus placementStatus =
+ getPlacementStatus(replicas, requiredNodes);
+
+ boolean sufficientlyReplicated = replicaCount.isSufficientlyReplicated();
+ boolean isPolicySatisfied = placementStatus.isPolicySatisfied();
+ if (!sufficientlyReplicated || !isPolicySatisfied) {
Review Comment:
Even if HDDS-6892 implemented to provide Mis replicated status, we need to revisit here to use that. So, I would suggest to file a followup.
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