JacksonYao287 commented on a change in pull request #2278: URL: https://github.com/apache/ozone/pull/2278#discussion_r648197219
########## File path: hadoop-hdds/tools/src/main/java/org/apache/hadoop/hdds/scm/cli/ContainerBalancerCommands.java ########## @@ -0,0 +1,101 @@ +/* + * 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.cli; + +import java.util.concurrent.Callable; + +import org.apache.hadoop.hdds.cli.GenericCli; +import org.apache.hadoop.hdds.cli.HddsVersionProvider; +import org.apache.hadoop.hdds.cli.OzoneAdmin; +import org.apache.hadoop.hdds.cli.SubcommandWithParent; + +import org.kohsuke.MetaInfServices; +import picocli.CommandLine.Command; +import picocli.CommandLine.Model.CommandSpec; +import picocli.CommandLine.Spec; + +/** + * Subcommand to group container balancer related operations. + * + * <p>The balancer is a tool that balances datanode space usage on an Ozone + * cluster when some datanodes become full or when new empty nodes join + * the cluster. The tool can be run by the cluster administrator + * from command line while applications adding and deleting blocks. + * + * <p>SYNOPSIS + * <pre> + * To start: + * ozone admin containerbalancer start + * [ -t/--threshold {@literal <threshold>}] + * [ -i/--idleiterations {@literal <idleiterations>}] + * Example: ozone admin containerbalancer start + * start balancer with a default threshold of 10% + * ozone admin containerbalancer start -t 5 + * start balancer with a threshold of 5% + * ozone admin containerbalancer start -i 20 + * start balancer with maximum 20 consecutive idle iterations + * ozone admin containerbalancer start -i -1 + * run balancer with default threshold infinitely Review comment: thanks @lokeshj1703 for pointing out this, will update it! -- 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: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
