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    gitHub
    <span><svg 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" class="icon outbound"><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="sr-only">(opens new window)</span></span></a></nav>  <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>IoTDB User Guide (V0.12.x)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>IoTDB Introduction</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Quick Start</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Data Concept</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>CLI</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Administration Management</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>IoTDB-SQL Language</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>API</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/UserGuide/V0.12.x/API/Programming-JDBC.html" class="sidebar-link">JDBC</a></li><li><a href="/UserGuide/V0.12.x/API/Programming-Native-API.html" class="sidebar-link">Native API</a></li><li><a href="/UserGuide/V0.12.x/API/Programming-Other-Languages.html" aria-current="page" class="active sidebar-link">Other Languages</a></li><li><a href="/UserGuide/V0.12.x/API/Programming-TsFile-API.html" class="sidebar-link">TsFile API</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>UDF</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Communication Service Protocol</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>System Tools</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Collaboration of Edge and Cloud</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Ecosystem Integration</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Cluster Setup</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>FAQ</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Appendix</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Comparison with TSDBs</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h2 id="python-native-dependencies"><a href="#python-native-dependencies" class="header-anchor">#</a> Python Native Dependencies</h2> <h3 id="dependencies"><a href="#dependencies" class="header-anchor">#</a> Dependencies</h3> <p>python3.7 or later is preferred.</p> <p>You have to install Thrift (0.11.0 or later) to compile our thrift file into python code. Below is the official
tutorial of installation:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>http://thrift.apache.org/docs/install/
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><h3 id="installation"><a href="#installation" class="header-anchor">#</a> Installation</h3> <ul><li>Option 1: pip install</li></ul> <p>You can find the Apache IoTDB Python Client API package on https://pypi.org/project/apache-iotdb/.</p> <p>The download command is:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>pip install apache-iotdb
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><ul><li>Option 2: basic usage of thrift</li></ul> <p>Optionally, if you know the basic usage of thrift, you can download the thrift source file in
<code>thrift\src\main\thrift\rpc.thrift</code>, and simply run <code>thrift -gen py -out ./target/iotdb rpc.thrift</code>
to generate the Python library.</p> <h3 id="coding-example"><a href="#coding-example" class="header-anchor">#</a> Coding Example</h3> <p>We provided an example of how to use the thrift library to connect to IoTDB in <code>client-py/src /SessionExample.py</code>, please read it carefully before you write your own code.</p> <h2 id="c-native-interfaces"><a href="#c-native-interfaces" class="header-anchor">#</a> C++ Native Interfaces</h2> <h3 id="dependencies-2"><a href="#dependencies-2" class="header-anchor">#</a> Dependencies</h3> <ul><li>Java 8+</li> <li>Maven 3.5+</li> <li>Flex</li> <li>Bison 2.7+</li> <li>Boost</li> <li>OpenSSL 1.0+</li></ul> <h3 id="installation-2"><a href="#installation-2" class="header-anchor">#</a> Installation</h3> <p>The compilation of CPP client requires the module &quot;compile-tools&quot; to be built first.
&quot;compile-tools&quot; is mainly responsible for building Thrift libraries locally.</p> <h4 id="build-thrift-on-macos"><a href="#build-thrift-on-macos" class="header-anchor">#</a> Build Thrift on MacOS</h4> <ul><li>Bison</li></ul> <p>Bison 2.3 is preinstalled on OSX, but this version is too low.
When building Thrift with Bison 2.3, the following error would pop out:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>invalid directive: '%code'
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>For such case, please update <code>Bison</code>:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>brew install bison		
brew link bison --force		
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><p>Then, you need to tell the OS where the new bison is.</p> <p>For Bash users:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>echo 'export PATH=&quot;/usr/local/opt/bison/bin:$PATH&quot;' &gt;&gt; ~/.bash_profile		
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>For zsh users:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>echo 'export PATH=&quot;/usr/local/opt/bison/bin:$PATH&quot;' &gt;&gt; ~/.zshrc
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><ul><li>Boost</li></ul> <p>Please make sure a relative new version of Boost is ready on your machine.
If no Boost available, install the latest version of Boost:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>brew install boost
brew link boost
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><ul><li>OpenSSL</li></ul> <p>Make sure the Openssl libraries has been install on your Mac.
The default Openssl include file search path is &quot;/usr/local/opt/openssl/include&quot;.
If Openssl header files can not be found when building Thrift, please add option</p> <p><code>-Dopenssl.include.dir=&quot;&quot;</code></p> <p>to specify the OpenSSL installation directory on your Mac.</p> <h4 id="build-thrift-on-linux"><a href="#build-thrift-on-linux" class="header-anchor">#</a> Build Thrift on Linux</h4> <p>To install all dependencies, run:</p> <p>Debian/Ubuntu:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>sudo apt-get install gcc g++ bison flex libboost-all-dev
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>CentOS:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>yum install gcc g++ bison flex boost-devel
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><h4 id="build-thrift-on-windows"><a href="#build-thrift-on-windows" class="header-anchor">#</a> Build Thrift on Windows</h4> <p>Make sure a complete Windows C++ building environment is prepared on your machine.
MSVC, MinGW... are supported.</p> <p>If you are using MS Visual Studio, remember to install Visual Studio C/C++ IDE and compiler(supporting CMake, Clang, MinGW).</p> <ul><li>Flex and Bison
Windows Flex and Bison could be downloaded from SourceForge: https://sourceforge.net/projects/winflexbison/</li></ul> <p>After downloaded, please rename the executables to flex.exe and bison.exe and add them to &quot;PATH&quot; environment variables.</p> <ul><li>Boost
For Boost, please download from the official website: https://www.boost.org/users/download/</li></ul> <p>Then build Boost by executing bootstrap.bat and b2.exe.</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>bootstrap.bat
.\b2.exe
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><p>To help CMake find your Boost libraries on windows, you should set <code>-Dboost.include.dir=${your boost header folder} -Dboost.library.dir=${your boost lib (stage) folder}</code>
to your mvn build command.</p> <h4 id="cmake-generator-on-windows"><a href="#cmake-generator-on-windows" class="header-anchor">#</a> Cmake generator on Windows</h4> <p>There is a long list of supported Cmake generators on Windows environment.</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>  Visual Studio 16 2019        = Generates Visual Studio 2019 project files.
                                 Use -A option to specify architecture.
  Visual Studio 15 2017 [arch] = Generates Visual Studio 2017 project files.
                                 Optional [arch] can be &quot;Win64&quot; or &quot;ARM&quot;.
  Visual Studio 14 2015 [arch] = Generates Visual Studio 2015 project files.
                                 Optional [arch] can be &quot;Win64&quot; or &quot;ARM&quot;.
  Visual Studio 12 2013 [arch] = Generates Visual Studio 2013 project files.
                                 Optional [arch] can be &quot;Win64&quot; or &quot;ARM&quot;.
  Visual Studio 11 2012 [arch] = Generates Visual Studio 2012 project files.
                                 Optional [arch] can be &quot;Win64&quot; or &quot;ARM&quot;.
  Visual Studio 10 2010 [arch] = Generates Visual Studio 2010 project files.
                                 Optional [arch] can be &quot;Win64&quot; or &quot;IA64&quot;.
  Visual Studio 9 2008 [arch]  = Generates Visual Studio 2008 project files.
                                 Optional [arch] can be &quot;Win64&quot; or &quot;IA64&quot;.
  Borland Makefiles            = Generates Borland makefiles.
* NMake Makefiles              = Generates NMake makefiles.
  NMake Makefiles JOM          = Generates JOM makefiles.
  MSYS Makefiles               = Generates MSYS makefiles.
  MinGW Makefiles              = Generates a make file for use with
                                 mingw32-make.
  Unix Makefiles               = Generates standard UNIX makefiles.
  Green Hills MULTI            = Generates Green Hills MULTI files
                                 (experimental, work-in-progress).
  Ninja                        = Generates build.ninja files.
  Ninja Multi-Config           = Generates build-&lt;Config&gt;.ninja files.
  Watcom WMake                 = Generates Watcom WMake makefiles.
  CodeBlocks - MinGW Makefiles = Generates CodeBlocks project files.
  CodeBlocks - NMake Makefiles = Generates CodeBlocks project files.
  CodeBlocks - NMake Makefiles = Generates CodeBlocks project fi

</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br></div></div><p>the list is available via command: <code>cmake --help</code></p> <p>When building client-cpp project, use -Dcmake.generator=&quot;&quot; option to specify a Cmake generator.
E.g., <code>mvn package -Dcmake.generator=&quot;Visual Studio 15 2017 [arch]&quot;</code></p> <h4 id="building-c-client"><a href="#building-c-client" class="header-anchor">#</a> Building C++ Client</h4> <p>To compile cpp client, add &quot;-P compile-cpp&quot; option to maven build command.</p> <p>The compiling requires the module &quot;compile-tools&quot; to be built first.</p> <h4 id="compile-and-test"><a href="#compile-and-test" class="header-anchor">#</a> Compile and Test:</h4> <p><code>mvn package -P compile-cpp -pl example/client-cpp-example -am -DskipTest</code></p> <p>To compile on Windows, please install Boost first and add following Maven settings:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>-Dboost.include.dir=${your boost header folder} -Dboost.library.dir=${your boost lib (stage) folder}` 
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>e.g.,</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>mvn package -P compile-cpp -pl client-cpp,server,example/client-cpp-example -am 
-D&quot;boost.include.dir&quot;=&quot;D:\boost_1_75_0&quot; -D&quot;boost.library.dir&quot;=&quot;D:\boost_1_75_0\stage\lib&quot; -DskipTests
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><p>If the compilation finishes successfully, the packaged zip file will be placed under
&quot;client-cpp/target/client-cpp-${project.version}-cpp-${os}.zip&quot;.</p> <p>On Mac machines, the hierarchy of the package should look like this:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>.
+-- client
|   +-- include
|       +-- Session.h
|       +-- TSIService.h
|       +-- rpc_types.h
|       +-- rpc_constants.h
|       +-- thrift
|           +-- thrift_headers...
|   +-- lib
|       +-- libiotdb_session.dylib
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br></div></div><h3 id="q-a"><a href="#q-a" class="header-anchor">#</a> Q&amp;A</h3> <h4 id="on-mac"><a href="#on-mac" class="header-anchor">#</a> on Mac</h4> <p>If errors occur when compiling thrift source code, try to downgrade your xcode-commandline from 12 to 11.5</p> <p>see https://stackoverflow.com/questions/63592445/ld-unsupported-tapi-file-type-tapi-tbd-in-yaml-file/65518087#65518087</p> <h4 id="on-windows"><a href="#on-windows" class="header-anchor">#</a> on Windows</h4> <p>When Building Thrift and downloading packages via &quot;wget&quot;, a possible annoying issue may occur with
error message looks like:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>Failed to delete cached file C:\Users\Administrator\.m2\repository\.cache\download-maven-plugin\index.ser
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>Possible fixes:</p> <ul><li>Try to delete the &quot;.m2\repository\.cache&quot; directory and try again.</li> <li>Add &quot;&lt;skipCache&gt;true&lt;/skipCache&gt;&quot; configuration to the download-maven-plugin maven phase that complains this error.</li></ul></div> <div class="page-nav"><p class="inner"><span class="prev">
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