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| <h1> |
| <a id="alluxio-guide" class="anchor" href="#alluxio-guide" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Alluxio guide</h1> |
| <p>This tutorial provides a brief introduction to using Alluxio.</p> |
| <ul> |
| <li>How to use Alluxio in CarbonData? |
| <ul> |
| <li>[Running alluxio example in CarbonData project by IDEA](#Running alluxio example in CarbonData project by IDEA)</li> |
| <li>[CarbonData supports alluxio by spark-shell](#CarbonData supports alluxio by spark-shell)</li> |
| <li>[CarbonData supports alluxio by spark-submit](#CarbonData supports alluxio by spark-submit)</li> |
| </ul> |
| </li> |
| </ul> |
| <h2> |
| <a id="running-alluxio-example-in-carbondata-project-by-idea" class="anchor" href="#running-alluxio-example-in-carbondata-project-by-idea" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Running alluxio example in CarbonData project by IDEA</h2> |
| <h3> |
| <a id="building-carbondata" class="anchor" href="#building-carbondata" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a><a href="https://github.com/apache/carbondata/tree/master/build" target=_blank>Building CarbonData</a> |
| </h3> |
| <ul> |
| <li>Please refer to <a href="https://github.com/apache/carbondata/tree/master/build" target=_blank>Building CarbonData</a>.</li> |
| <li>Users need to install IDEA and scala plugin, and import CarbonData project.</li> |
| </ul> |
| <h3> |
| <a id="installing-and-starting-alluxio" class="anchor" href="#installing-and-starting-alluxio" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Installing and starting Alluxio</h3> |
| <ul> |
| <li>Please refer to <a href="https://www.alluxio.org/docs/1.8/en/Getting-Started.html#starting-alluxio" rel="nofollow">https://www.alluxio.org/docs/1.8/en/Getting-Started.html#starting-alluxio</a> |
| </li> |
| <li>Access the Alluxio web: <a href="http://localhost:19999/home" rel="nofollow">http://localhost:19999/home</a> |
| </li> |
| </ul> |
| <h3> |
| <a id="running-example" class="anchor" href="#running-example" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Running Example</h3> |
| <ul> |
| <li>Please refer to <a href="https://github.com/apache/carbondata/blob/master/examples/spark/src/main/scala/org/apache/carbondata/examples/AlluxioExample.scala" target=_blank>AlluxioExample</a> |
| </li> |
| </ul> |
| <h2> |
| <a id="carbondata-supports-alluxio-by-spark-shell" class="anchor" href="#carbondata-supports-alluxio-by-spark-shell" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>CarbonData supports alluxio by spark-shell</h2> |
| <h3> |
| <a id="building-carbondata-1" class="anchor" href="#building-carbondata-1" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a><a href="https://github.com/apache/carbondata/tree/master/build" target=_blank>Building CarbonData</a> |
| </h3> |
| <ul> |
| <li>Please refer to <a href="https://github.com/apache/carbondata/tree/master/build" target=_blank>Building CarbonData</a>.</li> |
| </ul> |
| <h3> |
| <a id="preparing-spark" class="anchor" href="#preparing-spark" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Preparing Spark</h3> |
| <ul> |
| <li>Please refer to <a href="http://spark.apache.org/docs/latest/" target=_blank rel="nofollow">http://spark.apache.org/docs/latest/</a> |
| </li> |
| </ul> |
| <h3> |
| <a id="downloading-alluxio-and-uncompressing-it" class="anchor" href="#downloading-alluxio-and-uncompressing-it" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Downloading alluxio and uncompressing it</h3> |
| <ul> |
| <li>Please refer to <a href="https://www.alluxio.org/download" target=_blank rel="nofollow">https://www.alluxio.org/download</a> |
| </li> |
| </ul> |
| <h3> |
| <a id="running-spark-shell" class="anchor" href="#running-spark-shell" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Running spark-shell</h3> |
| <ul> |
| <li>Running the command in spark path</li> |
| </ul> |
| <pre lang="$command"><code>./bin/spark-shell --jars ${CARBONDATA_PATH}/assembly/target/scala-2.11/apache-carbondata-2.0.0-SNAPSHOT-bin-spark2.3.4-hadoop2.7.2.jar,${ALLUXIO_PATH}/client/alluxio-1.8.1-client.jar |
| </code></pre> |
| <ul> |
| <li>Testing use alluxio by CarbonSession</li> |
| </ul> |
| <pre lang="$scala"><code>import org.apache.spark.sql.CarbonSession._ |
| import org.apache.spark.sql.SparkSession |
| |
| val carbon = SparkSession.builder().master("local").appName("test").getOrCreateCarbonSession("alluxio://localhost:19998/carbondata"); |
| carbon.sql("CREATE TABLE carbon_alluxio(id String,name String, city String,age Int) STORED as carbondata"); |
| carbon.sql(s"LOAD DATA LOCAL INPATH '${CARBONDATA_PATH}/integration/spark/src/test/resources/sample.csv' into table carbon_alluxio"); |
| carbon.sql("select * from carbon_alluxio").show |
| </code></pre> |
| <ul> |
| <li>Result</li> |
| </ul> |
| <pre lang="$scala"><code>scala> carbon.sql("select * from carbon_alluxio").show |
| +---+------+---------+---+ |
| | id| name| city|age| |
| +---+------+---------+---+ |
| | 1| david| shenzhen| 31| |
| | 2| eason| shenzhen| 27| |
| | 3| jarry| wuhan| 35| |
| | 3| jarry|Bangalore| 35| |
| | 4| kunal| Delhi| 26| |
| | 4|vishal|Bangalore| 29| |
| +---+------+---------+---+ |
| </code></pre> |
| <h2> |
| <a id="carbondata-supports-alluxio-by-spark-submit" class="anchor" href="#carbondata-supports-alluxio-by-spark-submit" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>CarbonData supports alluxio by spark-submit</h2> |
| <h3> |
| <a id="building-carbondata-2" class="anchor" href="#building-carbondata-2" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a><a href="https://github.com/apache/carbondata/tree/master/build" target=_blank>Building CarbonData</a> |
| </h3> |
| <ul> |
| <li>Please refer to <a href="https://github.com/apache/carbondata/tree/master/build" target=_blank>Building CarbonData</a>.</li> |
| </ul> |
| <h3> |
| <a id="preparing-spark-1" class="anchor" href="#preparing-spark-1" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Preparing Spark</h3> |
| <ul> |
| <li>Please refer to <a href="http://spark.apache.org/docs/latest/" target=_blank rel="nofollow">http://spark.apache.org/docs/latest/</a> |
| </li> |
| </ul> |
| <h3> |
| <a id="downloading-alluxio-and-uncompressing-it-1" class="anchor" href="#downloading-alluxio-and-uncompressing-it-1" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Downloading alluxio and uncompressing it</h3> |
| <ul> |
| <li>Please refer to <a href="https://www.alluxio.org/download" target=_blank rel="nofollow">https://www.alluxio.org/download</a> |
| </li> |
| </ul> |
| <h3> |
| <a id="running-spark-submit" class="anchor" href="#running-spark-submit" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Running spark-submit</h3> |
| <h4> |
| <a id="upload-data-to-alluxio" class="anchor" href="#upload-data-to-alluxio" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Upload data to alluxio</h4> |
| <pre lang="$command"><code>./bin/alluxio fs copyFromLocal ${CARBONDATA_PATH}/hadoop/src/test/resources/data.csv / |
| </code></pre> |
| <h4> |
| <a id="command" class="anchor" href="#command" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Command</h4> |
| <pre lang="$command"><code>./bin/spark-submit \ |
| --master local \ |
| --jars ${ALLUXIO_PATH}/client/alluxio-1.8.1-client.jar,${CARBONDATA_PATH}/examples/spark/target/carbondata-examples-2.0.0-SNAPSHOT.jar \ |
| --class org.apache.carbondata.examples.AlluxioExample \ |
| ${CARBONDATA_PATH}/assembly/target/scala-2.11/apache-carbondata-2.0.0-SNAPSHOT-bin-spark2.3.4-hadoop2.7.2.jar \ |
| false |
| </code></pre> |
| <p><strong>NOTE</strong>: Please set runShell as false, which can avoid dependency on alluxio shell module.</p> |
| <h4> |
| <a id="result" class="anchor" href="#result" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Result</h4> |
| <pre lang="$command"><code>+-----------------+-------+--------------------+--------------------+---------+-----------+---------+----------+ |
| |SegmentSequenceId| Status| Load Start Time| Load End Time|Merged To|File Format|Data Size|Index Size| |
| +-----------------+-------+--------------------+--------------------+---------+-----------+---------+----------+ |
| | 1|Success|2019-01-09 15:10:...|2019-01-09 15:10:...| NA|COLUMNAR_V3| 23.92KB| 1.07KB| |
| | 0|Success|2019-01-09 15:10:...|2019-01-09 15:10:...| NA|COLUMNAR_V3| 23.92KB| 1.07KB| |
| +-----------------+-------+--------------------+--------------------+---------+-----------+---------+----------+ |
| |
| +-------+------+ |
| |country|amount| |
| +-------+------+ |
| | france| 202| |
| | china| 1698| |
| +-------+------+ |
| |
| +-----------------+---------+--------------------+--------------------+---------+-----------+---------+----------+ |
| |SegmentSequenceId| Status| Load Start Time| Load End Time|Merged To|File Format|Data Size|Index Size| |
| +-----------------+---------+--------------------+--------------------+---------+-----------+---------+----------+ |
| | 3|Compacted|2019-01-09 15:10:...|2019-01-09 15:10:...| 0.1|COLUMNAR_V3| 23.92KB| 1.03KB| |
| | 2|Compacted|2019-01-09 15:10:...|2019-01-09 15:10:...| 0.1|COLUMNAR_V3| 23.92KB| 1.07KB| |
| | 1|Compacted|2019-01-09 15:10:...|2019-01-09 15:10:...| 0.1|COLUMNAR_V3| 23.92KB| 1.07KB| |
| | 0.1| Success|2019-01-09 15:10:...|2019-01-09 15:10:...| NA|COLUMNAR_V3| 37.65KB| 1.08KB| |
| | 0|Compacted|2019-01-09 15:10:...|2019-01-09 15:10:...| 0.1|COLUMNAR_V3| 23.92KB| 1.07KB| |
| +-----------------+---------+--------------------+--------------------+---------+-----------+---------+----------+ |
| |
| </code></pre> |
| <h2> |
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| [2] <a href="https://www.alluxio.org/docs/1.8/en/compute/Spark.html" target=_blank rel="nofollow">https://www.alluxio.org/docs/1.8/en/compute/Spark.html</a></p> |
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