sodonnel commented on code in PR #3345: URL: https://github.com/apache/ozone/pull/3345#discussion_r861672953
########## hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/protocol/commands/ReconstructECContainersCommand.java: ########## @@ -0,0 +1,139 @@ +/* + * 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.ozone.protocol.commands; + +import java.util.List; +import java.util.stream.Collectors; + +import com.google.protobuf.ByteString; +import org.apache.hadoop.hdds.client.ECReplicationConfig; +import org.apache.hadoop.hdds.protocol.DatanodeDetails; +import org.apache.hadoop.hdds.protocol.proto + .StorageContainerDatanodeProtocolProtos.ReconstructECContainersCommandProto; +import org.apache.hadoop.hdds.protocol.proto + .StorageContainerDatanodeProtocolProtos.ReconstructECContainersCommandProto + .Builder; +import org.apache.hadoop.hdds.protocol.proto + .StorageContainerDatanodeProtocolProtos.SCMCommandProto.Type; + +import com.google.common.base.Preconditions; + +/** + * SCM command to request reconstruction of EC containers. + */ +public class ReconstructECContainersCommand + extends SCMCommand<ReconstructECContainersCommandProto> { + + private final long containerID; + private final List<DatanodeDetails> sourceDatanodes; + private final List<DatanodeDetails> targetDatanodes; + private final byte[] missingContainerIndexes; Review Comment: Its a bit strange to have a `List<Long>` for `srcIndexes` and `byte[]` for missing? Would it be better to have a `List<Int>` for both to be consistent? I don't think they need to be long, as the index will never be more than 14 for 10-4. I also worry about some bug resulting in a different size of `srcNodesIndexes` and `srcDatanodes`, or the order being wrong. What about this command receiving `List<ContainerReplica>` - that object contains both the index and datanodeDetails, so we avoid a map and just pass 1 parameter instead of two. When forming the protobuf, we don't need to send ContainerReplica - we can still send replicaIndex and DatanodeDetails as they are now. -- 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]
