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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 HDFSTool" class="title">Class HDFSTool</h2>
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 <pre>public class <span class="typeNameLabel">HDFSTool</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>
 <th class="colSecond" scope="col">Field</th>
 <th class="colLast" scope="col">Description</th>
 </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="#DFS_BLOCKSIZE">DFS_BLOCKSIZE</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="#DFS_PERMISSIONS_ENABLED">DFS_PERMISSIONS_ENABLED</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="#DFS_REPLICATION">DFS_REPLICATION</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="#FS_DEFAULTFS">FS_DEFAULTFS</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="#IO_FILE_BUFFER_SIZE">IO_FILE_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="#IO_SERIALIZATIONS">IO_SERIALIZATIONS</a></span></code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#USE_BINARYBLOCK_SERIALIZATION">USE_BINARYBLOCK_SERIALIZATION</a></span></code></th>
 <td class="colLast">&nbsp;</td>
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 <th class="colFirst" scope="col">Constructor</th>
 <th class="colLast" scope="col">Description</th>
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 <tr class="altColor">
 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">HDFSTool</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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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colSecond" scope="col">Method</th>
 <th class="colLast" scope="col">Description</th>
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 <tr id="i0" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addBinaryBlockSerializationFramework(org.apache.hadoop.conf.Configuration)">addBinaryBlockSerializationFramework</a></span>&#8203;(org.apache.hadoop.conf.Configuration&nbsp;job)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copyFileOnHDFS(java.lang.String,java.lang.String)">copyFileOnHDFS</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;originalDir,
               <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;newDir)</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="#createDirIfNotExistOnHDFS(java.lang.String,java.lang.String)">createDirIfNotExistOnHDFS</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;permissions)</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="#createDirIfNotExistOnHDFS(org.apache.hadoop.fs.Path)">createDirIfNotExistOnHDFS</a></span>&#8203;(org.apache.hadoop.fs.Path&nbsp;path)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createDirIfNotExistOnHDFS(org.apache.hadoop.fs.Path,java.lang.String)">createDirIfNotExistOnHDFS</a></span>&#8203;(org.apache.hadoop.fs.Path&nbsp;path,
                          <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>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteFileIfExistOnHDFS(java.lang.String)">deleteFileIfExistOnHDFS</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="i6" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteFileIfExistOnHDFS(org.apache.hadoop.fs.Path,org.apache.hadoop.mapred.JobConf)">deleteFileIfExistOnHDFS</a></span>&#8203;(org.apache.hadoop.fs.Path&nbsp;outpath,
                        org.apache.hadoop.mapred.JobConf&nbsp;job)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteFileIfExistOnLFS(org.apache.hadoop.fs.Path,org.apache.hadoop.mapred.JobConf)">deleteFileIfExistOnLFS</a></span>&#8203;(org.apache.hadoop.fs.Path&nbsp;outpath,
                       org.apache.hadoop.mapred.JobConf&nbsp;job)</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="#deleteFileWithMTDIfExistOnHDFS(java.lang.String)">deleteFileWithMTDIfExistOnHDFS</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">&nbsp;</td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>static long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#estimateNnzBasedOnFileSize(org.apache.hadoop.fs.Path,long,long,int,double)">estimateNnzBasedOnFileSize</a></span>&#8203;(org.apache.hadoop.fs.Path&nbsp;path,
                           long&nbsp;rlen,
                           long&nbsp;clen,
                           int&nbsp;blen,
                           double&nbsp;factor)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#existsFileOnHDFS(java.lang.String)">existsFileOnHDFS</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">&nbsp;</td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>static org.apache.hadoop.fs.FileStatus[]</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDirectoryListing(java.lang.String)">getDirectoryListing</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">&nbsp;</td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>static long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFilesizeOnHDFS(org.apache.hadoop.fs.Path)">getFilesizeOnHDFS</a></span>&#8203;(org.apache.hadoop.fs.Path&nbsp;path)</code></th>
 <td class="colLast">
 <div class="block">Returns the size of a file or directory on hdfs in bytes.</div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>static org.apache.hadoop.fs.FSDataOutputStream</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHDFSDataOutputStream(java.lang.String,boolean)">getHDFSDataOutputStream</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;filename,
                        boolean&nbsp;overwrite)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isDirectory(java.lang.String)">isDirectory</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">&nbsp;</td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isFileEmpty(org.apache.hadoop.fs.FileSystem,org.apache.hadoop.fs.Path)">isFileEmpty</a></span>&#8203;(org.apache.hadoop.fs.FileSystem&nbsp;fs,
            org.apache.hadoop.fs.Path&nbsp;dir)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i16" class="altColor">
 <td class="colFirst"><code>static boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isHDFSFileEmpty(java.lang.String)">isHDFSFileEmpty</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="i17" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#mergeIntoSingleFile(java.lang.String,java.lang.String)">mergeIntoSingleFile</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;originalDir,
                    <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;newFile)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i18" 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="#metaDataToString(org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType%5B%5D,org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties,org.apache.sysds.runtime.privacy.PrivacyConstraint)">metaDataToString</a></span>&#8203;(<a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                 <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                 <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                 <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                 <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                 <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties,
                 <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i19" class="rowColor">
 <td class="colFirst"><code>static boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readBooleanFromHDFSFile(java.lang.String)">readBooleanFromHDFSFile</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;filename)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i20" class="altColor">
 <td class="colFirst"><code>static double[]</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readColumnVectorFromHDFS(java.lang.String,org.apache.sysds.common.Types.FileFormat,long,long,int)">readColumnVectorFromHDFS</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="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                         long&nbsp;rlen,
                         long&nbsp;clen,
                         int&nbsp;blen)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i21" class="rowColor">
 <td class="colFirst"><code>static double</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readDoubleFromHDFSFile(java.lang.String)">readDoubleFromHDFSFile</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;filename)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i22" class="altColor">
 <td class="colFirst"><code>static long</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readIntegerFromHDFSFile(java.lang.String)">readIntegerFromHDFSFile</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;filename)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i23" class="rowColor">
 <td class="colFirst"><code>static double[][]</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readMatrixFromHDFS(java.lang.String,org.apache.sysds.common.Types.FileFormat,long,long,int)">readMatrixFromHDFS</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="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                   long&nbsp;rlen,
                   long&nbsp;clen,
                   int&nbsp;blen)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i24" class="altColor">
 <td class="colFirst"><code>static <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></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readObjectFromHDFSFile(java.lang.String,org.apache.sysds.common.Types.ValueType)">readObjectFromHDFSFile</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;filename,
                       <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i25" class="rowColor">
 <td class="colFirst"><code>static <a href="../instructions/cp/ScalarObject.html" title="class in org.apache.sysds.runtime.instructions.cp">ScalarObject</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readScalarObjectFromHDFSFile(java.lang.String,org.apache.sysds.common.Types.ValueType)">readScalarObjectFromHDFSFile</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="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i26" 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="#readStringFromHDFSFile(java.lang.String)">readStringFromHDFSFile</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;filename)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i27" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#renameFileOnHDFS(java.lang.String,java.lang.String)">renameFileOnHDFS</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;originalDir,
                 <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;newDir)</code></th>
 <td class="colLast">&nbsp;</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="#writeBooleanToHDFS(boolean,java.lang.String)">writeBooleanToHDFS</a></span>&#8203;(boolean&nbsp;b,
                   <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;filename)</code></th>
 <td class="colLast">&nbsp;</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="#writeDoubleToHDFS(double,java.lang.String)">writeDoubleToHDFS</a></span>&#8203;(double&nbsp;d,
                  <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;filename)</code></th>
 <td class="colLast">&nbsp;</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="#writeIntToHDFS(long,java.lang.String)">writeIntToHDFS</a></span>&#8203;(long&nbsp;i,
               <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;filename)</code></th>
 <td class="colLast">&nbsp;</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="#writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType%5B%5D,org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat)">writeMetaDataFile</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;mtdfile,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                  <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                  <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;mc,
                  <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i32" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType%5B%5D,org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties)">writeMetaDataFile</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;mtdfile,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                  <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                  <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                  <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                  <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i33" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType%5B%5D,org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties,org.apache.sysds.runtime.privacy.PrivacyConstraint)">writeMetaDataFile</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;mtdfile,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                  <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                  <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                  <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                  <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties,
                  <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i34" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType%5B%5D,org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.privacy.PrivacyConstraint)">writeMetaDataFile</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;mtdfile,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                  <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                  <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;mc,
                  <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                  <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i35" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat)">writeMetaDataFile</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;mtdfile,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                  <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;mc,
                  <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i36" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties)">writeMetaDataFile</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;mtdfile,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                  <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                  <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                  <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i37" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties,org.apache.sysds.runtime.privacy.PrivacyConstraint)">writeMetaDataFile</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;mtdfile,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                  <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                  <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                  <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties,
                  <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i38" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.privacy.PrivacyConstraint)">writeMetaDataFile</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;mtdfile,
                  <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                  <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;mc,
                  <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                  <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i39" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeMetaDataFileFrame(java.lang.String,org.apache.sysds.common.Types.ValueType%5B%5D,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat)">writeMetaDataFileFrame</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;mtdfile,
                       <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                       <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                       <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i40" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeObjectToHDFS(java.lang.Object,java.lang.String)">writeObjectToHDFS</a></span>&#8203;(<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>&nbsp;obj,
                  <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;filename)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i41" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeScalarMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType)">writeScalarMetaDataFile</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;mtdfile,
                        <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i42" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeScalarMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.privacy.PrivacyConstraint)">writeScalarMetaDataFile</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;mtdfile,
                        <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                        <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)</code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr id="i43" class="rowColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeScalarToHDFS(org.apache.sysds.runtime.instructions.cp.ScalarObject,java.lang.String)">writeScalarToHDFS</a></span>&#8203;(<a href="../instructions/cp/ScalarObject.html" title="class in org.apache.sysds.runtime.instructions.cp">ScalarObject</a>&nbsp;scalar,
                  <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">Helper function to write scalars to HDFS,
  including writing its meta data and removing CRC files in local file system</div>
 </td>
 </tr>
 <tr id="i44" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#writeStringToHDFS(java.lang.String,java.lang.String)">writeStringToHDFS</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;s,
                  <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;filename)</code></th>
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 <h3>Methods inherited from class&nbsp;java.lang.<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></h3>
 <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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 <div class="block">Helper function to write scalars to HDFS,
  including writing its meta data and removing CRC files in local file system</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>scalar</code> - scalar data object</dd>
 <dd><code>fname</code> - file name</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>
 <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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                            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>
 <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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 <pre class="methodSignature">public static&nbsp;void&nbsp;writeBooleanToHDFS&#8203;(boolean&nbsp;b,
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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>
 <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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 <h4>writeStringToHDFS</h4>
 <pre class="methodSignature">public static&nbsp;void&nbsp;writeStringToHDFS&#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;s,
                                      <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;filename)
                               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>
 <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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 <ul class="blockList">
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                                      <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;filename)
                               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>
 <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>
 </dl>
 </li>
 </ul>
 <a id="writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat)">
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                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                                      <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;mc,
                                      <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt)
                               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>
 <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>
 </dl>
 </li>
 </ul>
 <a id="writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.privacy.PrivacyConstraint)">
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                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                                      <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;mc,
                                      <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                                      <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)
                               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>
 <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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 </li>
 </ul>
 <a id="writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType[],org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat)">
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                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                                      <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                                      <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;mc,
                                      <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt)
                               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>
 <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>
 </dl>
 </li>
 </ul>
 <a id="writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType[],org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.privacy.PrivacyConstraint)">
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                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                                      <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                                      <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;mc,
                                      <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                                      <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)
                               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>
 <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>
 </dl>
 </li>
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 <a id="writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties)">
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 <h4>writeMetaDataFile</h4>
 <pre class="methodSignature">public static&nbsp;void&nbsp;writeMetaDataFile&#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;mtdfile,
                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                                      <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                                      <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                                      <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties)
                               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>
 <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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 </li>
 </ul>
 <a id="writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties,org.apache.sysds.runtime.privacy.PrivacyConstraint)">
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                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                                      <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                                      <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                                      <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties,
                                      <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)
                               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>
 <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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 </ul>
 <a id="writeMetaDataFileFrame(java.lang.String,org.apache.sysds.common.Types.ValueType[],org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat)">
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                                           <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                                           <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                                           <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt)
                                    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>
 <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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 <a id="writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType[],org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties)">
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                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                                      <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                                      <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                                      <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                                      <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties)
                               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>
 <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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 </ul>
 <a id="writeMetaDataFile(java.lang.String,org.apache.sysds.common.Types.ValueType,org.apache.sysds.common.Types.ValueType[],org.apache.sysds.common.Types.DataType,org.apache.sysds.runtime.meta.DataCharacteristics,org.apache.sysds.common.Types.FileFormat,org.apache.sysds.runtime.io.FileFormatProperties,org.apache.sysds.runtime.privacy.PrivacyConstraint)">
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                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt,
                                      <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>[]&nbsp;schema,
                                      <a href="../../common/Types.DataType.html" title="enum in org.apache.sysds.common">Types.DataType</a>&nbsp;dt,
                                      <a href="../meta/DataCharacteristics.html" title="class in org.apache.sysds.runtime.meta">DataCharacteristics</a>&nbsp;dc,
                                      <a href="../../common/Types.FileFormat.html" title="enum in org.apache.sysds.common">Types.FileFormat</a>&nbsp;fmt,
                                      <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties,
                                      <a href="../privacy/PrivacyConstraint.html" title="class in org.apache.sysds.runtime.privacy">PrivacyConstraint</a>&nbsp;privacyConstraint)
                               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>
 <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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                                            <a href="../../common/Types.ValueType.html" title="enum in org.apache.sysds.common">Types.ValueType</a>&nbsp;vt)
                                     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>
 <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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                                       <a href="../io/FileFormatProperties.html" title="class in org.apache.sysds.runtime.io">FileFormatProperties</a>&nbsp;formatProperties,
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                                       <a href="../DMLRuntimeException.html" title="class in org.apache.sysds.runtime">DMLRuntimeException</a></pre>
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                                             long&nbsp;rlen,
                                             long&nbsp;clen,
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                                                 long&nbsp;rlen,
                                                 long&nbsp;clen,
                                                 int&nbsp;blen)
                                          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>,
                                                 <a href="../DMLRuntimeException.html" title="class in org.apache.sysds.runtime">DMLRuntimeException</a></pre>
 <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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 <pre class="methodSignature">public static&nbsp;void&nbsp;createDirIfNotExistOnHDFS&#8203;(org.apache.hadoop.fs.Path&nbsp;path)
                                       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>
 <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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                                       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>
 <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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 <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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