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Posted to commits@kylin.apache.org by li...@apache.org on 2018/01/29 14:05:21 UTC
svn commit: r1822508 [12/40] - in /kylin/site: ./ blog/ blog/2018/
blog/2018/01/ blog/2018/01/01/ blog/2018/01/01/kylin-and-superset/
cn/docs21/install/ cn/docs23/ cn/docs23/howto/ cn/docs23/install/
cn/docs23/tutorial/ development/ docs21/ docs21/gett...
Added: kylin/site/docs23/gettingstarted/terminology.html
URL: http://svn.apache.org/viewvc/kylin/site/docs23/gettingstarted/terminology.html?rev=1822508&view=auto
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--- kylin/site/docs23/gettingstarted/terminology.html (added)
+++ kylin/site/docs23/gettingstarted/terminology.html Mon Jan 29 14:05:18 2018
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+<!--
+* 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.
+-->
+
+<!doctype html>
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+ <!--
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+* 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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+*
+* Unless required by applicable law or agreed to in writing, software
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+*
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+*
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+ <li><a href="/docs23/install/kylin_aws_emr.html" class="list-group-item-lay pjaxlink" id="navlist">Install Kylin on AWS EMR</a></li>
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+ <li><a href="#titleTutorial" data-toggle="collapse" id="navtitle">Tutorial</a></li>
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+ <li><a href="/docs23/tutorial/cube_build_job.html" class="list-group-item-lay pjaxlink" id="navlist">Cube Build and Job Monitoring</a></li>
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+ <li><a href="/docs23/tutorial/acl.html" class="list-group-item-lay pjaxlink" id="navlist">Cube Permission (v2.1.x)</a></li>
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+ <li><a href="/docs23/tutorial/project_level_acl.html" class="list-group-item-lay pjaxlink" id="navlist">Project Level ACL</a></li>
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+ <li><a href="/docs23/tutorial/cube_spark.html" class="list-group-item-lay pjaxlink" id="navlist">Build Cube with Spark</a></li>
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+ <li><a href="/docs23/tutorial/cube_build_performance.html" class="list-group-item-lay pjaxlink" id="navlist">Cube Build Tuning</a></li>
+
+
+
+
+
+
+
+
+ <ul>
+ </div>
+</div>
+
+ <li><a href="#titleIntegration" data-toggle="collapse" id="navtitle">Integration</a></li>
+ <div class="collapse in">
+ <div class="list-group" id="list1">
+ <ul style="list-style-type:disc">
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+ <li><a href="/docs23/tutorial/odbc.html" class="list-group-item-lay pjaxlink" id="navlist">Kylin ODBC Driver</a></li>
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+ <li><a href="/docs23/tutorial/tableau.html" class="list-group-item-lay pjaxlink" id="navlist">Tableau 8</a></li>
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+ <li><a href="/docs23/tutorial/tableau_91.html" class="list-group-item-lay pjaxlink" id="navlist">Tableau 9</a></li>
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+ <li><a href="/docs23/tutorial/powerbi.html" class="list-group-item-lay pjaxlink" id="navlist">MS Excel and Power BI</a></li>
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+ <li><a href="/docs23/tutorial/microstrategy.html" class="list-group-item-lay pjaxlink" id="navlist">MicroStrategy</a></li>
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+
+ <li><a href="/docs23/tutorial/squirrel.html" class="list-group-item-lay pjaxlink" id="navlist">SQuirreL</a></li>
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+ <li><a href="/docs23/tutorial/flink.html" class="list-group-item-lay pjaxlink" id="navlist">Apache Flink</a></li>
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+ <li><a href="/docs23/tutorial/hue.html" class="list-group-item-lay pjaxlink" id="navlist">Apache Hue</a></li>
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+ <li><a href="/docs23/tutorial/Qlik.html" class="list-group-item-lay pjaxlink" id="navlist">Qlik Sense</a></li>
+
+
+
+
+
+
+
+
+ <ul>
+ </div>
+</div>
+
+ <li><a href="#titleHow To" data-toggle="collapse" id="navtitle">How To</a></li>
+ <div class="collapse in">
+ <div class="list-group" id="list1">
+ <ul style="list-style-type:disc">
+
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+ <li><a href="/docs23/howto/howto_use_restapi.html" class="list-group-item-lay pjaxlink" id="navlist">Use RESTful API</a></li>
+
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+
+
+ <li><a href="/docs23/howto/howto_build_cube_with_restapi.html" class="list-group-item-lay pjaxlink" id="navlist">Build Cube with API</a></li>
+
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+
+
+ <li><a href="/docs23/howto/howto_optimize_cubes.html" class="list-group-item-lay pjaxlink" id="navlist">Optimize Cube Design</a></li>
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+
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+ <li><a href="/docs23/howto/howto_optimize_build.html" class="list-group-item-lay pjaxlink" id="navlist">Optimize Cube Build</a></li>
+
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+ <li><a href="/docs23/howto/howto_backup_metadata.html" class="list-group-item-lay pjaxlink" id="navlist">Backup Metadata</a></li>
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+ <li><a href="/docs23/howto/howto_cleanup_storage.html" class="list-group-item-lay pjaxlink" id="navlist">Cleanup Storage</a></li>
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+ <li><a href="/docs23/howto/howto_jdbc.html" class="list-group-item-lay pjaxlink" id="navlist">Kylin JDBC Driver</a></li>
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+ <li><a href="/docs23/howto/howto_upgrade.html" class="list-group-item-lay pjaxlink" id="navlist">Upgrade From Old Versions</a></li>
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+ <li><a href="/docs23/howto/howto_ldap_and_sso.html" class="list-group-item-lay pjaxlink" id="navlist">Secure with LDAP and SSO</a></li>
+
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+ <li><a href="/docs23/howto/howto_use_beeline.html" class="list-group-item-lay pjaxlink" id="navlist">Use Beeline for Hive</a></li>
+
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+ <li><a href="/docs23/howto/howto_update_coprocessor.html" class="list-group-item-lay pjaxlink" id="navlist">Update Coprocessor</a></li>
+
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+ <li><a href="/docs23/howto/howto_install_ranger_kylin_plugin.html" class="list-group-item-lay pjaxlink" id="navlist">The Ranger Kylin Plugin Installation Guide</a></li>
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+ <h1 class="post-title">Terminology</h1>
+
+
+ <article class="post-content" >
+ <p>Here are some domain terms we are using in Apache Kylin, please check them for your reference. <br />
+They are basic knowledge of Apache Kylin which also will help to well understand such concerpt, term, knowledge, theory and others about Data Warehouse, Business Intelligence for analycits.</p>
+
+<ul>
+ <li><strong>Data Warehouse</strong>: a data warehouse (DW or DWH), also known as an enterprise data warehouse (EDW), is a system used for reporting and data analysis, <a href="https://en.wikipedia.org/wiki/Data_warehouse">wikipedia</a></li>
+ <li><strong>Business Intelligence</strong>: Business intelligence (BI) is the set of techniques and tools for the transformation of raw data into meaningful and useful information for business analysis purposes, <a href="https://en.wikipedia.org/wiki/Business_intelligence">wikipedia</a></li>
+ <li><strong>OLAP</strong>: OLAP is an acronym for <a href="https://en.wikipedia.org/wiki/Online_analytical_processing">online analytical processing</a></li>
+ <li><strong>OLAP Cube</strong>: an OLAP cube is an array of data understood in terms of its 0 or more dimensions, <a href="http://en.wikipedia.org/wiki/OLAP_cube">wikipedia</a></li>
+ <li><strong>Star Schema</strong>: the star schema consists of one or more fact tables referencing any number of dimension tables, <a href="https://en.wikipedia.org/wiki/Star_schema">wikipedia</a></li>
+ <li><strong>Fact Table</strong>: a Fact table consists of the measurements, metrics or facts of a business process, <a href="https://en.wikipedia.org/wiki/Fact_table">wikipedia</a></li>
+ <li><strong>Lookup Table</strong>: a lookup table is an array that replaces runtime computation with a simpler array indexing operation, <a href="https://en.wikipedia.org/wiki/Lookup_table">wikipedia</a></li>
+ <li><strong>Dimension</strong>: A dimension is a structure that categorizes facts and measures in order to enable users to answer business questions. Commonly used dimensions are people, products, place and time, <a href="https://en.wikipedia.org/wiki/Dimension_(data_warehouse)">wikipedia</a></li>
+ <li><strong>Measure</strong>: a measure is a property on which calculations (e.g., sum, count, average, minimum, maximum) can be made, <a href="https://en.wikipedia.org/wiki/Measure_(data_warehouse)">wikipedia</a></li>
+ <li><strong>Join</strong>: a SQL join clause combines records from two or more tables in a relational database, <a href="https://en.wikipedia.org/wiki/Join_(SQL)">wikipedia</a></li>
+</ul>
+
+
+ </article>
+ </div>
+ </div>
+ </div>
+ </div>
+ </div>
+ <!--
+* 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
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+-->
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Added: kylin/site/docs23/howto/howto_backup_metadata.html
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+ <li><a href="/docs23/install/kylin_docker.html" class="list-group-item-lay pjaxlink" id="navlist">Run Kylin with Docker</a></li>
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+ <li><a href="/docs23/install/kylin_aws_emr.html" class="list-group-item-lay pjaxlink" id="navlist">Install Kylin on AWS EMR</a></li>
+
+
+
+
+
+
+
+
+ <ul>
+ </div>
+</div>
+
+ <li><a href="#titleTutorial" data-toggle="collapse" id="navtitle">Tutorial</a></li>
+ <div class="collapse in">
+ <div class="list-group" id="list1">
+ <ul style="list-style-type:disc">
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+ <li><a href="/docs23/tutorial/kylin_sample.html" class="list-group-item-lay pjaxlink" id="navlist">Quick Start with Sample Cube</a></li>
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+ <li><a href="/docs23/tutorial/web.html" class="list-group-item-lay pjaxlink" id="navlist">Web Interface</a></li>
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+ <li><a href="/docs23/tutorial/create_cube.html" class="list-group-item-lay pjaxlink" id="navlist">Cube Wizard</a></li>
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+ <li><a href="/docs23/tutorial/cube_build_job.html" class="list-group-item-lay pjaxlink" id="navlist">Cube Build and Job Monitoring</a></li>
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+ <li><a href="/docs23/tutorial/acl.html" class="list-group-item-lay pjaxlink" id="navlist">Cube Permission (v2.1.x)</a></li>
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+ <li><a href="/docs23/tutorial/project_level_acl.html" class="list-group-item-lay pjaxlink" id="navlist">Project Level ACL</a></li>
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+ <li><a href="/docs23/tutorial/cube_spark.html" class="list-group-item-lay pjaxlink" id="navlist">Build Cube with Spark</a></li>
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+ <li><a href="/docs23/tutorial/cube_build_performance.html" class="list-group-item-lay pjaxlink" id="navlist">Cube Build Tuning</a></li>
+
+
+
+
+
+
+
+
+ <ul>
+ </div>
+</div>
+
+ <li><a href="#titleIntegration" data-toggle="collapse" id="navtitle">Integration</a></li>
+ <div class="collapse in">
+ <div class="list-group" id="list1">
+ <ul style="list-style-type:disc">
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+ <li><a href="/docs23/tutorial/odbc.html" class="list-group-item-lay pjaxlink" id="navlist">Kylin ODBC Driver</a></li>
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+ <li><a href="/docs23/tutorial/tableau.html" class="list-group-item-lay pjaxlink" id="navlist">Tableau 8</a></li>
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+ <li><a href="/docs23/tutorial/tableau_91.html" class="list-group-item-lay pjaxlink" id="navlist">Tableau 9</a></li>
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+ <li><a href="/docs23/tutorial/powerbi.html" class="list-group-item-lay pjaxlink" id="navlist">MS Excel and Power BI</a></li>
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+ <li><a href="/docs23/tutorial/microstrategy.html" class="list-group-item-lay pjaxlink" id="navlist">MicroStrategy</a></li>
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+ <li><a href="/docs23/tutorial/squirrel.html" class="list-group-item-lay pjaxlink" id="navlist">SQuirreL</a></li>
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+ <li><a href="/docs23/tutorial/flink.html" class="list-group-item-lay pjaxlink" id="navlist">Apache Flink</a></li>
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+ <li><a href="/docs23/tutorial/hue.html" class="list-group-item-lay pjaxlink" id="navlist">Apache Hue</a></li>
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+ <li><a href="/docs23/tutorial/Qlik.html" class="list-group-item-lay pjaxlink" id="navlist">Qlik Sense</a></li>
+
+
+
+
+
+
+
+
+ <ul>
+ </div>
+</div>
+
+ <li><a href="#titleHow To" data-toggle="collapse" id="navtitle">How To</a></li>
+ <div class="collapse in">
+ <div class="list-group" id="list1">
+ <ul style="list-style-type:disc">
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+ <li><a href="/docs23/howto/howto_use_restapi.html" class="list-group-item-lay pjaxlink" id="navlist">Use RESTful API</a></li>
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+ <li><a href="/docs23/howto/howto_build_cube_with_restapi.html" class="list-group-item-lay pjaxlink" id="navlist">Build Cube with API</a></li>
+
+
+
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+ <li><a href="/docs23/howto/howto_optimize_cubes.html" class="list-group-item-lay pjaxlink" id="navlist">Optimize Cube Design</a></li>
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+ <li><a href="/docs23/howto/howto_optimize_build.html" class="list-group-item-lay pjaxlink" id="navlist">Optimize Cube Build</a></li>
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+ <li><a href="/docs23/howto/howto_backup_metadata.html" class="list-group-item-lay pjaxlink" id="navlist">Backup Metadata</a></li>
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+ <li><a href="/docs23/howto/howto_cleanup_storage.html" class="list-group-item-lay pjaxlink" id="navlist">Cleanup Storage</a></li>
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+ <li><a href="/docs23/howto/howto_jdbc.html" class="list-group-item-lay pjaxlink" id="navlist">Kylin JDBC Driver</a></li>
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+ <li><a href="/docs23/howto/howto_upgrade.html" class="list-group-item-lay pjaxlink" id="navlist">Upgrade From Old Versions</a></li>
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+ <li><a href="/docs23/howto/howto_ldap_and_sso.html" class="list-group-item-lay pjaxlink" id="navlist">Secure with LDAP and SSO</a></li>
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+ <li><a href="/docs23/howto/howto_use_beeline.html" class="list-group-item-lay pjaxlink" id="navlist">Use Beeline for Hive</a></li>
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+ <li><a href="/docs23/howto/howto_install_ranger_kylin_plugin.html" class="list-group-item-lay pjaxlink" id="navlist">The Ranger Kylin Plugin Installation Guide</a></li>
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+ <li><a href="/docs23/howto/howto_setup_systemcube.html" class="list-group-item-lay pjaxlink" id="navlist">Set Up System Cube</a></li>
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+ <li><a href="/docs23/howto/howto_use_cube_planner.html" class="list-group-item-lay pjaxlink" id="navlist">Use Cube Planner</a></li>
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+ <li><a href="/docs23/howto/howto_use_dashboard.html" class="list-group-item-lay pjaxlink" id="navlist">Use Dashboard</a></li>
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+</div>
+
+
+ </ul>
+</div>
+
+ <div class="col-md-9 col-lg-9 col-xs-14 aside2">
+ <div id="container">
+ <div id="pjax">
+ <h1 class="post-title">Backup Metadata</h1>
+
+
+ <article class="post-content" >
+ <p>Kylin organizes all of its metadata (including cube descriptions and instances, projects, inverted index description and instances, jobs, tables and dictionaries) as a hierarchy file system. However, Kylin uses hbase to store it, rather than normal file system. If you check your kylin configuration file(kylin.properties) you will find such a line:</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">## The metadata store in hbase
+kylin.metadata.url=kylin_metadata@hbase</code></pre></div>
+
+<p>This indicates that the metadata will be saved as a htable called <code class="highlighter-rouge">kylin_metadata</code>. You can scan the htable in hbase shell to check it out.</p>
+
+<h2 id="backup-metadata-store-with-binary-package">Backup Metadata Store with binary package</h2>
+
+<p>Sometimes you need to backup the Kylinâs Metadata Store from hbase to your disk file system.<br />
+In such cases, assuming youâre on the hadoop CLI(or sandbox) where you deployed Kylin, you can go to KYLIN_HOME and run :</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">./bin/metastore.sh backup</code></pre></div>
+
+<p>to dump your metadata to your local folder a folder under KYLIN_HOME/metadata_backps, the folder is named after current time with the syntax: KYLIN_HOME/meta_backups/meta_year_month_day_hour_minute_second</p>
+
+<h2 id="restore-metadata-store-with-binary-package">Restore Metadata Store with binary package</h2>
+
+<p>In case you find your metadata store messed up, and you want to restore to a previous backup:</p>
+
+<p>Firstly, reset the metadata store (this will clean everything of the Kylin metadata store in hbase, make sure to backup):</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">./bin/metastore.sh reset</code></pre></div>
+
+<p>Then upload the backup metadata to Kylinâs metadata store:</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">./bin/metastore.sh restore $KYLIN_HOME/meta_backups/meta_xxxx_xx_xx_xx_xx_xx</code></pre></div>
+
+<h2 id="backuprestore-metadata-in-development-env-available-since-073">Backup/restore metadata in development env (available since 0.7.3)</h2>
+
+<p>When developing/debugging Kylin, typically you have a dev machine with an IDE, and a backend sandbox. Usually youâll write code and run test cases at dev machine. It would be troublesome if you always have to put a binary package in the sandbox to check the metadata. There is a helper class called SandboxMetastoreCLI to help you download/upload metadata locally at your dev machine. Follow the Usage information and run it in your IDE.</p>
+
+<h2 id="cleanup-unused-resources-from-metadata-store-available-since-073">Cleanup unused resources from Metadata Store (available since 0.7.3)</h2>
+<p>As time goes on, some resources like dictionary, table snapshots became useless (as the cube segment be dropped or merged), but they still take space there; You can run command to find and cleanup them from metadata store:</p>
+
+<p>Firstly, run a check, this is safe as it will not change anything:</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">./bin/metastore.sh clean</code></pre></div>
+
+<p>The resources that will be dropped will be listed;</p>
+
+<p>Next, add the ââdelete trueâ parameter to cleanup those resources; before this, make sure you have made a backup of the metadata store;</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">./bin/metastore.sh clean --delete true</code></pre></div>
+
+
+ </article>
+ </div>
+ </div>
+ </div>
+ </div>
+ </div>
+ <!--
+* Licensed to the Apache Software Foundation (ASF) under one
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