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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.sysds.runtime.util</a></div>
<h2 title="Class LocalFileUtils" class="title">Class LocalFileUtils</h2>
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<pre>public class <span class="typeNameLabel">LocalFileUtils</span>
extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></pre>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#BUFFER_SIZE">BUFFER_SIZE</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#CATEGORY_CACHE">CATEGORY_CACHE</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#CATEGORY_CODEGEN">CATEGORY_CODEGEN</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#CATEGORY_LINEAGE">CATEGORY_LINEAGE</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#CATEGORY_PARTITIONING">CATEGORY_PARTITIONING</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#CATEGORY_RESULTMERGE">CATEGORY_RESULTMERGE</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#CATEGORY_WORK">CATEGORY_WORK</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">LocalFileUtils</a></span>()</code></th>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#checkAndCreateStagingDir(java.lang.String)">checkAndCreateStagingDir</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cleanupRcWorkingDirectory(java.lang.String)">cleanupRcWorkingDirectory</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cleanupWorkingDirectory()">cleanupWorkingDirectory</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cleanupWorkingDirectory(java.lang.String)">cleanupWorkingDirectory</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createLocalFileIfNotExist(java.lang.String)">createLocalFileIfNotExist</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createLocalFileIfNotExist(java.lang.String,java.lang.String)">createLocalFileIfNotExist</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;permission)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createWorkingDirectory()">createWorkingDirectory</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createWorkingDirectoryWithUUID(java.lang.String)">createWorkingDirectoryWithUUID</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;uuid)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteFileIfExists(java.lang.String)">deleteFileIfExists</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteFileIfExists(java.lang.String,boolean)">deleteFileIfExists</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir,
boolean&nbsp;fileOnly)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getUniqueWorkingDir(java.lang.String)">getUniqueWorkingDir</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;category)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getWorkingDir(java.lang.String)">getWorkingDir</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;category)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isExisting(java.lang.String)">isExisting</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;dir)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rcDelete(java.io.File)">rcDelete</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/File.html?is-external=true" title="class or interface in java.io" class="externalLink">File</a>&nbsp;dir)</code></th>
<td class="colLast">
<div class="block">Recursively deletes an entire local file system directory
and returns the number of files deleted.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rDelete(java.io.File)">rDelete</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/File.html?is-external=true" title="class or interface in java.io" class="externalLink">File</a>&nbsp;dir)</code></th>
<td class="colLast">
<div class="block">Recursively deletes an entire local file system directory.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readBlockSequenceFromLocal(java.lang.String,org.apache.sysds.runtime.matrix.data.Pair%5B%5D,java.util.HashMap)">readBlockSequenceFromLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
<a href="../matrix/data/Pair.html" title="class in org.apache.sysds.runtime.matrix.data">Pair</a>&lt;<a href="../matrix/data/MatrixIndexes.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixIndexes</a>,&#8203;<a href="../matrix/data/MatrixValue.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixValue</a>&gt;[]&nbsp;outValues,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/HashMap.html?is-external=true" title="class or interface in java.util" class="externalLink">HashMap</a>&lt;<a href="../matrix/data/MatrixIndexes.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixIndexes</a>,&#8203;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>&gt;&nbsp;outMap)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>static <a href="../controlprogram/caching/CacheBlock.html" title="interface in org.apache.sysds.runtime.controlprogram.caching">CacheBlock</a>&lt;?&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readCacheBlockFromLocal(java.lang.String,boolean)">readCacheBlockFromLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
boolean&nbsp;matrix)</code></th>
<td class="colLast">
<div class="block">Reads a matrix/frame block from local file system.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readFrameBlockFromLocal(java.lang.String)">readFrameBlockFromLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname)</code></th>
<td class="colLast">
<div class="block">Reads a frame block from local file system.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>static <a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readFrameBlockFromStream(java.io.InputStream)">readFrameBlockFromStream</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a>&nbsp;is)</code></th>
<td class="colLast">
<div class="block">Reads a frame block from an input stream, using a fused buffered reader
with special support for matrix blocks.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixBlockFromLocal(java.lang.String)">readMatrixBlockFromLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname)</code></th>
<td class="colLast">
<div class="block">Reads a matrix block from local file system.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixBlockFromLocal(java.lang.String,org.apache.sysds.runtime.matrix.data.MatrixBlock)">readMatrixBlockFromLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;reuse)</code></th>
<td class="colLast">
<div class="block">Reads a matrix block from local file system.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>static <a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixBlockFromStream(java.io.InputStream)">readMatrixBlockFromStream</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a>&nbsp;is)</code></th>
<td class="colLast">
<div class="block">Reads a matrix block from an input stream, using a fused buffered reader
with special support for matrix blocks.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>static org.apache.hadoop.io.Writable</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readWritableFromLocal(java.lang.String,org.apache.hadoop.io.Writable)">readWritableFromLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
org.apache.hadoop.io.Writable&nbsp;ret)</code></th>
<td class="colLast">
<div class="block">Reads an arbitrary writable from local file system, using a fused buffered reader
with special support for matrix blocks.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.io.Writable</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readWritableFromStream(java.io.InputStream,org.apache.hadoop.io.Writable)">readWritableFromStream</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a>&nbsp;is,
org.apache.hadoop.io.Writable&nbsp;ret)</code></th>
<td class="colLast">
<div class="block">Reads an arbitrary writable from an input stream, using a fused buffered reader
with special support for matrix blocks.</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setLocalFilePermissions(java.io.File,java.lang.String)">setLocalFilePermissions</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/File.html?is-external=true" title="class or interface in java.io" class="externalLink">File</a>&nbsp;file,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;permissions)</code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeBlockSequenceToLocal(java.lang.String,org.apache.sysds.runtime.matrix.data.Pair%5B%5D,int)">writeBlockSequenceToLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
<a href="../matrix/data/Pair.html" title="class in org.apache.sysds.runtime.matrix.data">Pair</a>&lt;<a href="../matrix/data/MatrixIndexes.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixIndexes</a>,&#8203;<a href="../matrix/data/MatrixValue.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixValue</a>&gt;[]&nbsp;inValues,
int&nbsp;len)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i26" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeByteArrayToLocal(java.lang.String,byte%5B%5D)">writeByteArrayToLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
byte[]&nbsp;data)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i27" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeCacheBlockToLocal(java.lang.String,org.apache.sysds.runtime.controlprogram.caching.CacheBlock)">writeCacheBlockToLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
<a href="../controlprogram/caching/CacheBlock.html" title="interface in org.apache.sysds.runtime.controlprogram.caching">CacheBlock</a>&lt;?&gt;&nbsp;cb)</code></th>
<td class="colLast">
<div class="block">Writes a matrix/frame block to local file system.</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeFrameBlockToLocal(java.lang.String,org.apache.sysds.runtime.frame.data.FrameBlock)">writeFrameBlockToLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
<a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a>&nbsp;fb)</code></th>
<td class="colLast">
<div class="block">Writes a frame block to local file system.</div>
</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMatrixBlockToLocal(java.lang.String,org.apache.sysds.runtime.matrix.data.MatrixBlock)">writeMatrixBlockToLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;mb)</code></th>
<td class="colLast">
<div class="block">Writes a matrix block to local file system.</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeTextFile(java.io.File,java.lang.String)">writeTextFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/File.html?is-external=true" title="class or interface in java.io" class="externalLink">File</a>&nbsp;file,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;text)</code></th>
<td class="colLast">
<div class="block">Writes a simple text file to local file system.</div>
</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeWritableToLocal(java.lang.String,org.apache.hadoop.io.Writable)">writeWritableToLocal</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
org.apache.hadoop.io.Writable&nbsp;mb)</code></th>
<td class="colLast">
<div class="block">Writes an arbitrary writable to local file system, using a fused buffered writer
with special support for matrix blocks.</div>
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<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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<pre>public static final&nbsp;int BUFFER_SIZE</pre>
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<pre>public&nbsp;LocalFileUtils()</pre>
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<pre class="methodSignature">public static&nbsp;<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;readMatrixBlockFromLocal&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Reads a matrix block from local file system.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to read</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<pre class="methodSignature">public static&nbsp;<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;readMatrixBlockFromLocal&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;reuse)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Reads a matrix block from local file system.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to read</dd>
<dd><code>reuse</code> - matrix block to reuse</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<pre class="methodSignature">public static&nbsp;<a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a>&nbsp;readFrameBlockFromLocal&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Reads a frame block from local file system.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to read</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>frame block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<pre class="methodSignature">public static&nbsp;<a href="../controlprogram/caching/CacheBlock.html" title="interface in org.apache.sysds.runtime.controlprogram.caching">CacheBlock</a>&lt;?&gt;&nbsp;readCacheBlockFromLocal&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
boolean&nbsp;matrix)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Reads a matrix/frame block from local file system.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to read</dd>
<dd><code>matrix</code> - if true, read matrix. if false, read frame.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>cache block (common interface to MatrixBlock and FrameBlock)</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<pre class="methodSignature">public static&nbsp;org.apache.hadoop.io.Writable&nbsp;readWritableFromLocal&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;fname,
org.apache.hadoop.io.Writable&nbsp;ret)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Reads an arbitrary writable from local file system, using a fused buffered reader
with special support for matrix blocks.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to read</dd>
<dd><code>ret</code> - hadoop writable</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>hadoop writable</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<h4>readMatrixBlockFromStream</h4>
<pre class="methodSignature">public static&nbsp;<a href="../matrix/data/MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;readMatrixBlockFromStream&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a>&nbsp;is)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Reads a matrix block from an input stream, using a fused buffered reader
with special support for matrix blocks.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>is</code> - input stream to read</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>matrix block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Reads a frame block from an input stream, using a fused buffered reader
with special support for matrix blocks.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>is</code> - input stream to read</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>frame block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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org.apache.hadoop.io.Writable&nbsp;ret)
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<div class="block">Reads an arbitrary writable from an input stream, using a fused buffered reader
with special support for matrix blocks.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>is</code> - input stream to read</dd>
<dd><code>ret</code> - hadoop writable</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>hadoop writable</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Writes a matrix block to local file system.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to write</dd>
<dd><code>mb</code> - matrix block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<a href="../frame/data/FrameBlock.html" title="class in org.apache.sysds.runtime.frame.data">FrameBlock</a>&nbsp;fb)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Writes a frame block to local file system.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to write</dd>
<dd><code>fb</code> - fame block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<a href="../controlprogram/caching/CacheBlock.html" title="interface in org.apache.sysds.runtime.controlprogram.caching">CacheBlock</a>&lt;?&gt;&nbsp;cb)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Writes a matrix/frame block to local file system.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to write</dd>
<dd><code>cb</code> - cache block (common interface to matrix block and frame block)</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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org.apache.hadoop.io.Writable&nbsp;mb)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block">Writes an arbitrary writable to local file system, using a fused buffered writer
with special support for matrix blocks.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fname</code> - file name to write</dd>
<dd><code>mb</code> - Hadoop writable</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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boolean&nbsp;fileOnly)</pre>
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<div class="block">Recursively deletes an entire local file system directory.</div>
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<dd><code>dir</code> - directory to delete recursively</dd>
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<div class="block">Recursively deletes an entire local file system directory
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<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>dir</code> - directory to delete recursively</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of files deleted</dd>
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<div class="block">Writes a simple text file to local file system.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>file</code> - output file</dd>
<dd><code>text</code> - content of text file</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - errors in file open/write/close</dd>
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