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  <section id="object-storage">
<h1 id="object-storage--page-root">Object storage<a class="headerlink" href="#object-storage--page-root" title="Link to this heading">#</a></h1>
<p>Object storage systems are commonly used to create data lakes or data lake
houses. These systems provide methods to store objects in a structured manner
and means to access them, for example using an API over HTTP. The objects are
files in various format including ORC, Parquet and others. Object storage
systems are available as service from public cloud providers and others vendors,
or can be self-hosted using commercial as well as open source offerings.</p>
<section id="object-storage-connectors">
<h2 id="object-storage-connectors">Object storage connectors<a class="headerlink" href="#object-storage-connectors" title="Link to this heading">#</a></h2>
<p>Trino accesses files directly on object storage and remote file system storage.
The following connectors use this direct approach to read and write data files.</p>
<ul class="simple">
<li><p><a class="reference internal" href="connector/delta-lake.html"><span class="doc std std-doc">Delta Lake connector</span></a></p></li>
<li><p><a class="reference internal" href="connector/hive.html"><span class="doc std std-doc">Hive connector</span></a></p></li>
<li><p><a class="reference internal" href="connector/hudi.html"><span class="doc std std-doc">Hudi connector</span></a></p></li>
<li><p><a class="reference internal" href="connector/iceberg.html"><span class="doc std std-doc">Iceberg connector</span></a></p></li>
</ul>
<p>The connectors all support a variety of protocols and formats used on these
object storage systems, and have separate requirements for metadata
availability.</p>
</section>
<section id="configuration">
<span id="file-system-configuration"></span><h2 id="configuration">Configuration<a class="headerlink" href="#configuration" title="Link to this heading">#</a></h2>
<p>Use the following properties to control the support for different file systems
in a catalog. Each catalog can only use one file system.</p>
<table id="id1">
<caption><span class="caption-text">File system support properties</span><a class="headerlink" href="#id1" title="Link to this table">#</a></caption>
<colgroup>
<col style="width: 35%"/>
<col style="width: 65%"/>
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Property</p></th>
<th class="head"><p>Description</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">fs.hadoop.enabled</span></code></p></td>
<td><p>Activate the <a class="reference internal" href="#file-system-legacy"><span class="std std-ref">legacy libraries and implementation based on the Hadoop</span></a>
ecosystem. Defaults to <code class="docutils literal notranslate"><span class="pre">true</span></code>.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">fs.native-azure.enabled</span></code></p></td>
<td><p>Activate the <a class="reference internal" href="object-storage/file-system-azure.html"><span class="doc std std-doc">native implementation for Azure Storage
support</span></a>, and deactivate all <a class="reference internal" href="#file-system-legacy"><span class="std std-ref">legacy
support</span></a>. Defaults to <code class="docutils literal notranslate"><span class="pre">false</span></code>.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">fs.native-gcs.enabled</span></code></p></td>
<td><p>Activate the <a class="reference internal" href="object-storage/file-system-gcs.html"><span class="doc std std-doc">native implementation for Google Cloud Storage
support</span></a>, and deactivate all <a class="reference internal" href="#file-system-legacy"><span class="std std-ref">legacy
support</span></a>. Defaults to <code class="docutils literal notranslate"><span class="pre">false</span></code>.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">fs.native-s3.enabled</span></code></p></td>
<td><p>Activate the <a class="reference internal" href="object-storage/file-system-s3.html"><span class="doc std std-doc">native implementation for S3 storage
support</span></a>, and deactivate all <a class="reference internal" href="#file-system-legacy"><span class="std std-ref">legacy
support</span></a> . Defaults to <code class="docutils literal notranslate"><span class="pre">false</span></code>.</p></td>
</tr>
</tbody>
</table>
</section>
<section id="native-file-system-support">
<span id="file-system-native"></span><h2 id="native-file-system-support">Native file system support<a class="headerlink" href="#native-file-system-support" title="Link to this heading">#</a></h2>
<p>Trino includes optimized implementations to access the following systems, and
compatible replacements:</p>
<ul class="simple">
<li><p><a class="reference internal" href="object-storage/file-system-azure.html"><span class="doc std std-doc">Azure Storage file system support</span></a></p></li>
<li><p><a class="reference internal" href="object-storage/file-system-gcs.html"><span class="doc std std-doc">Google Cloud Storage file system support</span></a></p></li>
<li><p><a class="reference internal" href="object-storage/file-system-s3.html"><span class="doc std std-doc">S3 file system support</span></a></p></li>
</ul>
<p>The native support is available in all four connectors, but must be activated
for use.</p>
</section>
<section id="legacy-file-system-support">
<span id="file-system-legacy"></span><h2 id="legacy-file-system-support">Legacy file system support<a class="headerlink" href="#legacy-file-system-support" title="Link to this heading">#</a></h2>
<p>The default behavior uses legacy libraries that originate from the Hadoop
ecosystem. It should only be used for accessing the Hadoop Distributed File
System (HDFS):</p>
<ul class="simple">
<li><p><a class="reference internal" href="object-storage/file-system-hdfs.html"><span class="doc std std-doc">HDFS file system support</span></a></p></li>
</ul>
<p>All four connectors can use the related <code class="docutils literal notranslate"><span class="pre">hive.*</span></code> properties for access to other
object storage system as <em>legacy</em> support. Additional documentation is available
with the Hive connector and relevant dedicated pages:</p>
<ul class="simple">
<li><p><a class="reference internal" href="connector/hive.html"><span class="doc std std-doc">Hive connector</span></a></p></li>
<li><p><a class="reference internal" href="object-storage/legacy-azure.html"><span class="doc std std-doc">Legacy Azure Storage support</span></a></p></li>
<li><p><a class="reference internal" href="object-storage/legacy-gcs.html"><span class="doc std std-doc">Legacy Google Cloud Storage support</span></a></p></li>
<li><p><a class="reference internal" href="object-storage/legacy-cos.html"><span class="doc std std-doc">Legacy IBM COS support</span></a></p></li>
<li><p><a class="reference internal" href="object-storage/legacy-s3.html"><span class="doc std std-doc">Legacy S3 support</span></a></p></li>
</ul>
</section>
<section id="other-object-storage-support">
<span id="object-storage-other"></span><h2 id="other-object-storage-support">Other object storage support<a class="headerlink" href="#other-object-storage-support" title="Link to this heading">#</a></h2>
<p>Trino also provides the following additional support and features for object
storage:</p>
<ul class="simple">
<li><p><a class="reference internal" href="object-storage/file-system-cache.html"><span class="doc std std-doc">File system cache</span></a></p></li>
<li><p><a class="reference internal" href="object-storage/metastores.html"><span class="doc std std-doc">Metastores</span></a></p></li>
<li><p><a class="reference internal" href="object-storage/file-formats.html"><span class="doc std std-doc">Object storage file formats</span></a></p></li>
</ul>
<div class="toctree-wrapper compound">
</div>
</section>
</section>


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