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| <title>Documentation for Apache Hadoop Ozone</title> |
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| <a class="navbar-brand" href="#">Apache Hadoop Ozone/HDDS documentation</a> |
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| <ul class="nav navbar-nav navbar-right"> |
| <li><a href="https://github.com/apache/hadoop">Source</a></li> |
| <li><a href="https://hadoop.apache.org">Apache Hadoop</a></li> |
| <li><a href="https://apache.org">ASF</a></li> |
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| <div class="container-fluid"> |
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| <div class="col-sm-3 col-md-2 sidebar"> |
| <img src="ozone-logo.png" style="max-width: 100%;"/> |
| <ul class="nav nav-sidebar"> |
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| <li class=""> |
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| <a href="index.html"> |
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| <span>Ozone Overview</span> |
| </a> |
| </li> |
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| <li class=""> |
| <a href="runningviadocker.html"> |
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| <span>Getting Started</span> |
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| <li class=""> |
| <a href="./runningviadocker.html">Alpha Cluster</a> |
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| <a href="./settings.html">Configuration</a> |
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| <a href="./realcluster.html">Starting an Ozone Cluster</a> |
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| <a href="./runningwithhdfs.html">Running concurrently with HDFS</a> |
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| <a href="./buildingsources.html">Building from Sources</a> |
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| <span>Client</span> |
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| <a href="./commandshell.html">Ozone CLI</a> |
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| <a href="./volumecommands.html">Volume Commands</a> |
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| <a href="./bucketcommands.html">Bucket Commands</a> |
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| <a href="./keycommands.html">Key Commands</a> |
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| <a href="./javaapi.html">Java API</a> |
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| <a href="./ozonefs.html">Ozone File System</a> |
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| <a href="./rest.html">REST API</a> |
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| </ul> |
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| <li class=""> |
| <a href="dozone.html"> |
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| <span>Tools</span> |
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| <a href="./dozone.html">Dozone & Dev Tools</a> |
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| <a href="./freon.html">Freon</a> |
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| <a href="./scmcli.html">SCMCLI</a> |
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| <span>Architecture</span> |
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| <a href="./hdds.html">Hadoop Distributed Data Store</a> |
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| <a href="./ozonemanager.html">Ozone Manager</a> |
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| </ul> |
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| </ul> |
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| </div> |
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| <div class="col-sm-9 col-sm-offset-3 col-md-10 col-md-offset-2 main"> |
| <h1>SCMCLI</h1> |
| <div class="col-md-9"> |
| <!--- |
| 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 |
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| http://www.apache.org/licenses/LICENSE-2.0 |
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| 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. |
| --> |
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| <p>SCM is the block service for Ozone. It is also the workhorse for ozone. But user process never talks to SCM. However, being able to read the state of SCM is useful.</p> |
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| <p>SCMCLI allows the developer to access SCM directly. Please note: Improper usage of this tool can destroy your cluster. Unless you know exactly what you are doing, Please do <em>not</em> use this tool. In other words, this is a developer only tool. We might even remove this command in future to prevent improper use.</p> |
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