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class="vp-page"><!--[--><!--[--><!----><!--]--><!----><nav class="vp-breadcrumb disable"></nav><div class="vp-page-title"><h1><!---->Hive-TsFile</h1><div class="page-info"><!----><!----><span class="page-date-info" aria-label="Writing Date"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon"><path d="M716.4 110.137c0-18.753-14.72-33.473-33.472-33.473-18.753 0-33.473 14.72-33.473 33.473v33.473h66.993v-33.473zm-334.87 0c0-18.753-14.72-33.473-33.473-33.473s-33.52 14.72-33.52 33.473v33.473h66.993v-33.473zm468.81 33.52H716.4v100.465c0 18.753-14.72 33.473-33.472 33.473a33.145 33.145 0 01-33.473-33.473V143.657H381.53v100.465c0 18.753-14.72 33.473-33.473 33.473a33.145 33.145 0 01-33.473-33.473V143.657H180.6A134.314 134.314 0 0046.66 277.595v535.756A134.314 134.314 0 00180.6 947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 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364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button><div class="arrow end"></div></div><div class="vp-toc-wrapper"><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#about-hive-tsfile-connector">About Hive-TsFile-Connector</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#system-requirements">System Requirements</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#data-type-correspondence">Data Type Correspondence</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#add-dependency-for-hive">Add Dependency For Hive</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#create-tsfile-backed-hive-tables">Create Tsfile-backed Hive tables</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#query-from-tsfile-backed-hive-tables">Query from TsFile-backed Hive tables</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#select-clause-example">Select Clause Example</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#aggregate-clause-example">Aggregate Clause Example</a></li><!----><!--]--></ul></li><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><h1 id="hive-tsfile" tabindex="-1"><a class="header-anchor" href="#hive-tsfile"><span>Hive-TsFile</span></a></h1><h2 id="about-hive-tsfile-connector" tabindex="-1"><a class="header-anchor" href="#about-hive-tsfile-connector"><span>About Hive-TsFile-Connector</span></a></h2><p>Hive-TsFile-Connector implements the support of Hive for external data sources of Tsfile type. This enables users to operate TsFile by Hive.</p><p>With this connector, you can</p><ul><li>Load a single TsFile, from either the local file system or hdfs, into hive</li><li>Load all files in a specific directory, from either the local file system or hdfs, into hive</li><li>Query the tsfile through HQL.</li><li>As of now, the write operation is not supported in hive-connector. So, insert operation in HQL is not allowed while operating tsfile through hive.</li></ul><h2 id="system-requirements" tabindex="-1"><a class="header-anchor" href="#system-requirements"><span>System Requirements</span></a></h2><table><thead><tr><th>Hadoop Version</th><th>Hive Version</th><th>Java Version</th><th>TsFile</th></tr></thead><tbody><tr><td><code>2.7.3</code> or <code>3.2.1</code></td><td><code>2.3.6</code> or <code>3.1.2</code></td><td><code>1.8</code></td><td><code>1.0.0</code></td></tr></tbody></table><blockquote><p>Note: For more information about how to download and use TsFile, please see the following link: <a href="https://github.com/apache/iotdb/tree/master/tsfile" target="_blank" rel="noopener noreferrer">https://github.com/apache/iotdb/tree/master/tsfile<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>.</p></blockquote><h2 id="data-type-correspondence" tabindex="-1"><a class="header-anchor" href="#data-type-correspondence"><span>Data Type Correspondence</span></a></h2><table><thead><tr><th>TsFile data type</th><th>Hive field type</th></tr></thead><tbody><tr><td>BOOLEAN</td><td>Boolean</td></tr><tr><td>INT32</td><td>INT</td></tr><tr><td>INT64</td><td>BIGINT</td></tr><tr><td>FLOAT</td><td>Float</td></tr><tr><td>DOUBLE</td><td>Double</td></tr><tr><td>TEXT</td><td>STRING</td></tr></tbody></table><h2 id="add-dependency-for-hive" tabindex="-1"><a class="header-anchor" href="#add-dependency-for-hive"><span>Add Dependency For Hive</span></a></h2><p>To use hive-connector in hive, we should add the hive-connector jar into hive.</p><p>After downloading the code of iotdb from <a href="https://github.com/apache/iotdb" target="_blank" rel="noopener noreferrer">https://github.com/apache/iotdb<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>, you can use the command of <code>mvn clean package -pl iotdb-connector/hive-connector -am -Dmaven.test.skip=true -P get-jar-with-dependencies</code> to get a <code>hive-connector-X.X.X-jar-with-dependencies.jar</code>.</p><p>Then in hive, use the command of <code>add jar XXX</code> to add the dependency. For example:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>hive&gt; add jar /Users/hive/iotdb/hive-connector/target/hive-connector-1.0.0-jar-with-dependencies.jar;

Added [/Users/hive/iotdb/hive-connector/target/hive-connector-1.0.0-jar-with-dependencies.jar] to class path
Added resources: [/Users/hive/iotdb/hive-connector/target/hive-connector-1.0.0-jar-with-dependencies.jar]
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="create-tsfile-backed-hive-tables" tabindex="-1"><a class="header-anchor" href="#create-tsfile-backed-hive-tables"><span>Create Tsfile-backed Hive tables</span></a></h2><p>To create a Tsfile-backed table, specify the <code>serde</code> as <code>org.apache.iotdb.hive.TsFileSerDe</code>,<br> specify the <code>inputformat</code> as <code>org.apache.iotdb.hive.TSFHiveInputFormat</code>,<br> and the <code>outputformat</code> as <code>org.apache.iotdb.hive.TSFHiveOutputFormat</code>.</p><p>Also provide a schema which only contains two fields: <code>time_stamp</code> and <code>sensor_id</code> for the table.<br><code>time_stamp</code> is the time value of the time series<br> and <code>sensor_id</code> is the sensor name to extract from the tsfile to hive such as <code>sensor_1</code>.<br> The name of the table can be any valid table names in hive.</p><p>Also a location provided for hive-connector to pull the most current data for the table.</p><p>The location should be a specific directory on your local file system or HDFS to set up Hadoop.<br> If it is in your local file system, the location should look like <code>file:///data/data/sequence/root.baic2.WWS.leftfrontdoor/</code></p><p>Last, set the <code>device_id</code> in <code>TBLPROPERTIES</code> to the device name you want to analyze.</p><p>For example:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>CREATE EXTERNAL TABLE IF NOT EXISTS only_sensor_1(
  time_stamp TIMESTAMP,
  sensor_1 BIGINT)
ROW FORMAT SERDE &#39;org.apache.iotdb.hive.TsFileSerDe&#39;
STORED AS
  INPUTFORMAT &#39;org.apache.iotdb.hive.TSFHiveInputFormat&#39;
  OUTPUTFORMAT &#39;org.apache.iotdb.hive.TSFHiveOutputFormat&#39;
LOCATION &#39;/data/data/sequence/root.baic2.WWS.leftfrontdoor/&#39;
TBLPROPERTIES (&#39;device_id&#39;=&#39;root.baic2.WWS.leftfrontdoor.plc1&#39;);
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>In this example, the data of <code>root.baic2.WWS.leftfrontdoor.plc1.sensor_1</code> is pulled from the directory of <code>/data/data/sequence/root.baic2.WWS.leftfrontdoor/</code>.<br> This table results in a description as below:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>hive&gt; describe only_sensor_1;
OK
time_stamp          	timestamp              	from deserializer
sensor_1            	bigint              	from deserializer
Time taken: 0.053 seconds, Fetched: 2 row(s)
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>At this point, the Tsfile-backed table can be worked with in Hive like any other table.</p><h2 id="query-from-tsfile-backed-hive-tables" tabindex="-1"><a class="header-anchor" href="#query-from-tsfile-backed-hive-tables"><span>Query from TsFile-backed Hive tables</span></a></h2><p>Before we do any queries, we should set the <code>hive.input.format</code> in hive by executing the following command.</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>hive&gt; set hive.input.format=org.apache.hadoop.hive.ql.io.HiveInputFormat;
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Now, we already have an external table named <code>only_sensor_1</code> in hive.<br> We can use any query operations through HQL to analyse it.</p><p>For example:</p><h3 id="select-clause-example" tabindex="-1"><a class="header-anchor" href="#select-clause-example"><span>Select Clause Example</span></a></h3><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>hive&gt; select * from only_sensor_1 limit 10;
OK
1	1000000
2	1000001
3	1000002
4	1000003
5	1000004
6	1000005
7	1000006
8	1000007
9	1000008
10	1000009
Time taken: 1.464 seconds, Fetched: 10 row(s)
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="aggregate-clause-example" tabindex="-1"><a class="header-anchor" href="#aggregate-clause-example"><span>Aggregate Clause Example</span></a></h3><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>hive&gt; select count(*) from only_sensor_1;
WARNING: Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.
Query ID = jackietien_20191016202416_d1e3e233-d367-4453-b39a-2aac9327a3b6
Total jobs = 1
Launching Job 1 out of 1
Number of reduce tasks determined at compile time: 1
In order to change the average load for a reducer (in bytes):
  set hive.exec.reducers.bytes.per.reducer=&lt;number&gt;
In order to limit the maximum number of reducers:
  set hive.exec.reducers.max=&lt;number&gt;
In order to set a constant number of reducers:
  set mapreduce.job.reduces=&lt;number&gt;
Job running in-process (local Hadoop)
2019-10-16 20:24:18,305 Stage-1 map = 0%,  reduce = 0%
2019-10-16 20:24:27,443 Stage-1 map = 100%,  reduce = 100%
Ended Job = job_local867757288_0002
MapReduce Jobs Launched:
Stage-Stage-1:  HDFS Read: 0 HDFS Write: 0 SUCCESS
Total MapReduce CPU Time Spent: 0 msec
OK
1000000
Time taken: 11.334 seconds, Fetched: 1 row(s)
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></div><!--[--><!----><!--]--><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/UserGuide/latest/Ecosystem-Integration/Hive-TsFile.md" rel="noopener noreferrer" target="_blank" aria-label="Found Error? Edit this page on GitHub" class="nav-link vp-meta-label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->Found Error? Edit this page on GitHub<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">Last update: </span><!----></div><!----></div></footer><nav class="vp-page-nav"><a class="route-link nav-link prev" href="/UserGuide/latest/Ecosystem-Integration/Spark-IoTDB.html" aria-label="Spark IoTDB Connector"><div class="hint"><span class="arrow start"></span>Prev</div><div class="link"><!---->Spark IoTDB Connector</div></a><a class="route-link nav-link next" href="/UserGuide/latest/Ecosystem-Integration/Flink-IoTDB.html" aria-label="Flink IoTDB Connector"><div class="hint">Next<span class="arrow end"></span></div><div class="link">Flink IoTDB Connector<!----></div></a></nav><!----><!--[--><!----><!--]--><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">latest</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2024 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p></footer></div><!--]--><!--]--><!--[--><!----><!--]--><!--]--></div>
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