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<h2 title="Class IOUtilFunctions" class="title">Class IOUtilFunctions</h2>
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<pre>public class <span class="typeNameLabel">IOUtilFunctions</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.CountRowsTask.html" title="class in org.apache.sysds.runtime.io">IOUtilFunctions.CountRowsTask</a></span></code>&nbsp;</td>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#EMPTY_TEXT_LINE">EMPTY_TEXT_LINE</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.fs.PathFilter</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#hiddenFileFilter">hiddenFileFilter</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#LIBSVM_DELIM">LIBSVM_DELIM</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#LIBSVM_INDEX_DELIM">LIBSVM_INDEX_DELIM</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#IOUtilFunctions--">IOUtilFunctions</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#baToInt-byte:A-int-">baToInt</a></span>(byte[]&nbsp;ba,
int&nbsp;off)</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#baToLong-byte:A-int-">baToLong</a></span>(byte[]&nbsp;ba,
int&nbsp;off)</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#baToShort-byte:A-int-">baToShort</a></span>(byte[]&nbsp;ba,
int&nbsp;off)</code>&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#checkAndRaiseErrorCSVEmptyField-java.lang.String-boolean-boolean-">checkAndRaiseErrorCSVEmptyField</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;row,
boolean&nbsp;fill,
boolean&nbsp;emptyFound)</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#checkAndRaiseErrorCSVNumColumns-java.lang.String-java.lang.String-java.lang.String:A-long-">checkAndRaiseErrorCSVNumColumns</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;fname,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;line,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;parts,
long&nbsp;ncol)</code>&nbsp;</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#closeSilently-java.io.Closeable-">closeSilently</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a>&nbsp;io)</code>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#closeSilently-org.apache.hadoop.mapred.RecordReader-">closeSilently</a></span>(org.apache.hadoop.mapred.RecordReader&lt;?,?&gt;&nbsp;rr)</code>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#countNnz-java.lang.String:A-">countNnz</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;cols)</code>
<div class="block">Returns the number of non-zero entries but avoids the expensive
string to double parsing.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#countNnz-java.lang.String:A-int-int-">countNnz</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;cols,
int&nbsp;pos,
int&nbsp;len)</code>
<div class="block">Returns the number of non-zero entries but avoids the expensive
string to double parsing.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#countNumColumnsCSV-org.apache.hadoop.mapred.InputSplit:A-org.apache.hadoop.mapred.InputFormat-org.apache.hadoop.mapred.JobConf-java.lang.String-">countNumColumnsCSV</a></span>(org.apache.hadoop.mapred.InputSplit[]&nbsp;splits,
org.apache.hadoop.mapred.InputFormat&nbsp;informat,
org.apache.hadoop.mapred.JobConf&nbsp;job,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;delim)</code>
<div class="block">Counts the number of columns in a given collection of csv file splits.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#countTokensCSV-java.lang.String-java.lang.String-">countTokensCSV</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;str,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;delim)</code>
<div class="block">Counts the number of tokens defined by the given delimiter, respecting
the rules for quotes and escapes defined in RFC4180,
with robustness for various special cases.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#deleteCrcFilesFromLocalFileSystem-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.Path-">deleteCrcFilesFromLocalFileSystem</a></span>(org.apache.hadoop.fs.FileSystem&nbsp;fs,
org.apache.hadoop.fs.Path&nbsp;path)</code>
<div class="block">Delete the CRC files from the local file system associated with a
particular file and its metadata file.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static &lt;T&gt;&nbsp;T</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#get-java.util.concurrent.Future-">get</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Future.html?is-external=true" title="class or interface in java.util.concurrent">Future</a>&lt;T&gt;&nbsp;in)</code>&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#getBytes-java.nio.ByteBuffer-">getBytes</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a>&nbsp;buff)</code>&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>static org.apache.hadoop.fs.FileSystem</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#getFileSystem-org.apache.hadoop.conf.Configuration-">getFileSystem</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>&nbsp;</td>
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<tr id="i15" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.fs.FileSystem</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#getFileSystem-org.apache.hadoop.fs.Path-">getFileSystem</a></span>(org.apache.hadoop.fs.Path&nbsp;fname)</code>&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>static org.apache.hadoop.fs.FileSystem</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#getFileSystem-org.apache.hadoop.fs.Path-org.apache.hadoop.conf.Configuration-">getFileSystem</a></span>(org.apache.hadoop.fs.Path&nbsp;fname,
org.apache.hadoop.conf.Configuration&nbsp;conf)</code>&nbsp;</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.fs.FileSystem</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#getFileSystem-java.lang.String-">getFileSystem</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;fname)</code>&nbsp;</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#getPartFileName-int-">getPartFileName</a></span>(int&nbsp;pos)</code>&nbsp;</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.fs.Path[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#getSequenceFilePaths-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.Path-">getSequenceFilePaths</a></span>(org.apache.hadoop.fs.FileSystem&nbsp;fs,
org.apache.hadoop.fs.Path&nbsp;file)</code>&nbsp;</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#getUTFSize-java.lang.String-">getUTFSize</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;value)</code>
<div class="block">Returns the serialized size in bytes of the given string value,
following the modified UTF-8 specification as used by Java's
DataInput/DataOutput.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#intToBa-int-byte:A-int-">intToBa</a></span>(int&nbsp;val,
byte[]&nbsp;ba,
int&nbsp;off)</code>&nbsp;</td>
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<tr id="i22" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#isObjectStoreFileScheme-org.apache.hadoop.fs.Path-">isObjectStoreFileScheme</a></span>(org.apache.hadoop.fs.Path&nbsp;path)</code>&nbsp;</td>
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<tr id="i23" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#isSameFileScheme-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">isSameFileScheme</a></span>(org.apache.hadoop.fs.Path&nbsp;path1,
org.apache.hadoop.fs.Path&nbsp;path2)</code>&nbsp;</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#longToBa-long-byte:A-int-">longToBa</a></span>(long&nbsp;val,
byte[]&nbsp;ba,
int&nbsp;off)</code>&nbsp;</td>
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<tr id="i25" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../org/apache/sysds/runtime/io/FileFormatPropertiesMM.html" title="class in org.apache.sysds.runtime.io">FileFormatPropertiesMM</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#readAndParseMatrixMarketHeader-java.lang.String-">readAndParseMatrixMarketHeader</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;filename)</code>&nbsp;</td>
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<tr id="i26" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#readMatrixMarketHeader-java.lang.String-">readMatrixMarketHeader</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;filename)</code>&nbsp;</td>
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<tr id="i27" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#shortToBa-int-byte:A-int-">shortToBa</a></span>(int&nbsp;val,
byte[]&nbsp;ba,
int&nbsp;off)</code>&nbsp;</td>
</tr>
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<td class="colFirst"><code>static org.apache.hadoop.mapred.InputSplit[]</code></td>
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<div class="block">Splits a string by a specified delimiter into all tokens, including empty.</div>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#splitCSV-java.lang.String-java.lang.String-">splitCSV</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;str,
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<div class="block">Splits a string by a specified delimiter into all tokens, including empty
while respecting the rules for quotes and escapes defined in RFC4180,
with robustness for various special cases.</div>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#splitCSV-java.lang.String-java.lang.String-java.lang.String:A-java.util.Set-">splitCSV</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;str,
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<div class="block">Splits a string by a specified delimiter into all tokens, including empty
while respecting the rules for quotes and escapes defined in RFC4180,
with robustness for various special cases.</div>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/runtime/io/IOUtilFunctions.html#toString-java.io.InputStream-">toString</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;input)</code>&nbsp;</td>
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<pre>public static&nbsp;org.apache.hadoop.fs.FileSystem&nbsp;getFileSystem(org.apache.hadoop.fs.Path&nbsp;fname,
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throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
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<pre>public static&nbsp;boolean&nbsp;isSameFileScheme(org.apache.hadoop.fs.Path&nbsp;path1,
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boolean&nbsp;fill,
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<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;line,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;parts,
long&nbsp;ncol)
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;split(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;str,
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<div class="block">Splits a string by a specified delimiter into all tokens, including empty.
NOTE: This method is meant as a faster drop-in replacement of the regular
string split.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>str</code> - string to split</dd>
<dd><code>delim</code> - delimiter</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>string array</dd>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;splitCSV(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;str,
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<div class="block">Splits a string by a specified delimiter into all tokens, including empty
while respecting the rules for quotes and escapes defined in RFC4180,
with robustness for various special cases.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>str</code> - string to split</dd>
<dd><code>delim</code> - delimiter</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>string array of tokens</dd>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;splitCSV(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;str,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;delim,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;tokens,
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<div class="block">Splits a string by a specified delimiter into all tokens, including empty
while respecting the rules for quotes and escapes defined in RFC4180,
with robustness for various special cases.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>str</code> - string to split</dd>
<dd><code>delim</code> - delimiter</dd>
<dd><code>tokens</code> - array for tokens, length needs to match the number of tokens</dd>
<dd><code>naStrings</code> - the strings to map to null value.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
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<div class="block">Counts the number of tokens defined by the given delimiter, respecting
the rules for quotes and escapes defined in RFC4180,
with robustness for various special cases.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>str</code> - string to split</dd>
<dd><code>delim</code> - delimiter</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of tokens split by the given delimiter</dd>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;readMatrixMarketHeader(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;filename)</pre>
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<pre>public static&nbsp;int&nbsp;countNnz(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;cols)</pre>
<div class="block">Returns the number of non-zero entries but avoids the expensive
string to double parsing. This function is guaranteed to never
underestimate.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cols</code> - string array</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of non-zeros</dd>
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<pre>public static&nbsp;int&nbsp;countNnz(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;cols,
int&nbsp;pos,
int&nbsp;len)</pre>
<div class="block">Returns the number of non-zero entries but avoids the expensive
string to double parsing. This function is guaranteed to never
underestimate.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cols</code> - string array</dd>
<dd><code>pos</code> - starting array index</dd>
<dd><code>len</code> - ending array index</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of non-zeros</dd>
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<pre>public static&nbsp;int&nbsp;getUTFSize(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;value)</pre>
<div class="block">Returns the serialized size in bytes of the given string value,
following the modified UTF-8 specification as used by Java's
DataInput/DataOutput.
see java docs: docs/api/java/io/DataInput.html#modified-utf-8</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>value</code> - string value</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>string size for modified UTF-8 specification</dd>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;toInputStream(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;input)</pre>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;toString(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;input)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public static&nbsp;org.apache.hadoop.mapred.InputSplit[]&nbsp;sortInputSplits(org.apache.hadoop.mapred.InputSplit[]&nbsp;splits)</pre>
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<pre>public static&nbsp;int&nbsp;countNumColumnsCSV(org.apache.hadoop.mapred.InputSplit[]&nbsp;splits,
org.apache.hadoop.mapred.InputFormat&nbsp;informat,
org.apache.hadoop.mapred.JobConf&nbsp;job,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;delim)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Counts the number of columns in a given collection of csv file splits. This primitive aborts
if a row with more than 0 columns is found and hence is robust against empty file splits etc.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>splits</code> - input splits</dd>
<dd><code>informat</code> - input format</dd>
<dd><code>job</code> - job configruation</dd>
<dd><code>delim</code> - delimiter</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of columns in the collection of csv file splits</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if IOException occurs</dd>
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org.apache.hadoop.fs.Path&nbsp;file)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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org.apache.hadoop.fs.Path&nbsp;path)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Delete the CRC files from the local file system associated with a
particular file and its metadata file.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fs</code> - the file system</dd>
<dd><code>path</code> - the path to a file</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - thrown if error occurred attempting to delete crc files</dd>
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int&nbsp;off)</pre>
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byte[]&nbsp;ba,
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<pre>public static&nbsp;&lt;T&gt;&nbsp;T&nbsp;get(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Future.html?is-external=true" title="class or interface in java.util.concurrent">Future</a>&lt;T&gt;&nbsp;in)</pre>
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