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<div class="subTitle">org.apache.drill.yarn.core</div>
<h2 title="Class DfsFacade" class="title">Class DfsFacade</h2>
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<pre>public class <span class="typeNameLabel">DfsFacade</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">Facade to the distributed file system (DFS) system that implements
Drill-on-YARN related operations. Some operations are used by both the client
and AM applications.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#DfsFacade-com.typesafe.config.Config-">DfsFacade</a></span>(com.typesafe.config.Config&nbsp;config)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#connect--">connect</a></span>()</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#exists-org.apache.hadoop.fs.Path-">exists</a></span>(org.apache.hadoop.fs.Path&nbsp;path)</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#getUploadPath-java.io.File-">getUploadPath</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;localArchiveFile)</code>&nbsp;</td>
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<td class="colFirst"><code>org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#getUploadPath-java.lang.String-">getUploadPath</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;baseName)</code>&nbsp;</td>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#isLocalized--">isLocalized</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>org.apache.hadoop.yarn.api.records.LocalResource</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#makeResource-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.FileStatus-org.apache.hadoop.yarn.api.records.LocalResourceType-org.apache.hadoop.yarn.api.records.LocalResourceVisibility-">makeResource</a></span>(org.apache.hadoop.fs.Path&nbsp;dfsPath,
org.apache.hadoop.fs.FileStatus&nbsp;dfsFileStatus,
org.apache.hadoop.yarn.api.records.LocalResourceType&nbsp;type,
org.apache.hadoop.yarn.api.records.LocalResourceVisibility&nbsp;visibility)</code>
<div class="block">Create a local resource definition for YARN.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#removeDrillFile-java.lang.String-">removeDrillFile</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;fileName)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.html#uploadArchive-java.io.File-org.apache.hadoop.fs.Path-java.lang.String-">uploadArchive</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;localArchiveFile,
org.apache.hadoop.fs.Path&nbsp;destPath,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;label)</code>&nbsp;</td>
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<pre>public&nbsp;DfsFacade(com.typesafe.config.Config&nbsp;config)</pre>
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<pre>public&nbsp;boolean&nbsp;isLocalized()</pre>
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<h4>connect</h4>
<pre>public&nbsp;void&nbsp;connect()
throws <a href="../../../../../org/apache/drill/yarn/core/DfsFacade.DfsFacadeException.html" title="class in org.apache.drill.yarn.core">DfsFacade.DfsFacadeException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.DfsFacadeException.html" title="class in org.apache.drill.yarn.core">DfsFacade.DfsFacadeException</a></code></dd>
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<h4>exists</h4>
<pre>public&nbsp;boolean&nbsp;exists(org.apache.hadoop.fs.Path&nbsp;path)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getUploadPath(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;localArchiveFile)</pre>
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<pre>public&nbsp;org.apache.hadoop.fs.Path&nbsp;getUploadPath(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;baseName)</pre>
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<h4>uploadArchive</h4>
<pre>public&nbsp;void&nbsp;uploadArchive(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a>&nbsp;localArchiveFile,
org.apache.hadoop.fs.Path&nbsp;destPath,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;label)
throws <a href="../../../../../org/apache/drill/yarn/core/DfsFacade.DfsFacadeException.html" title="class in org.apache.drill.yarn.core">DfsFacade.DfsFacadeException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.DfsFacadeException.html" title="class in org.apache.drill.yarn.core">DfsFacade.DfsFacadeException</a></code></dd>
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<h4>makeResource</h4>
<pre>public&nbsp;org.apache.hadoop.yarn.api.records.LocalResource&nbsp;makeResource(org.apache.hadoop.fs.Path&nbsp;dfsPath,
org.apache.hadoop.fs.FileStatus&nbsp;dfsFileStatus,
org.apache.hadoop.yarn.api.records.LocalResourceType&nbsp;type,
org.apache.hadoop.yarn.api.records.LocalResourceVisibility&nbsp;visibility)
throws <a href="../../../../../org/apache/drill/yarn/core/DfsFacade.DfsFacadeException.html" title="class in org.apache.drill.yarn.core">DfsFacade.DfsFacadeException</a></pre>
<div class="block">Create a local resource definition for YARN. A local resource is one that
must be localized onto the remote node prior to running a command on that
node.
<p>
YARN uses the size and timestamp to check if the file has changed
on HDFS and to check if YARN can use an existing copy, if any.
<p>
Resources are made public.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>dfsPath</code> - the path (relative or absolute) to the file on the configured file
system (usually HDFS).</dd>
<dd><code>dfsFileStatus</code> - the file status of the configured file system</dd>
<dd><code>type</code> - local resource type (archive, file, or pattern)</dd>
<dd><code>visibility</code> - local resource visibility (public, private, or application)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a YARN local resource records that contains information about path,
size, type, resource and so on that YARN requires.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if the resource does not exist on the configured file system</dd>
<dd><code><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.DfsFacadeException.html" title="class in org.apache.drill.yarn.core">DfsFacade.DfsFacadeException</a></code></dd>
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<pre>public&nbsp;void&nbsp;removeDrillFile(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;fileName)
throws <a href="../../../../../org/apache/drill/yarn/core/DfsFacade.DfsFacadeException.html" title="class in org.apache.drill.yarn.core">DfsFacade.DfsFacadeException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/drill/yarn/core/DfsFacade.DfsFacadeException.html" title="class in org.apache.drill.yarn.core">DfsFacade.DfsFacadeException</a></code></dd>
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