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<div class="subTitle">org.apache.hadoop.io</div>
<h2 title="Class MD5Hash" class="title">Class MD5Hash</h2>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&gt;, <a href="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>, <a href="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&gt;</dd>
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<pre>@InterfaceAudience.Public
@InterfaceStability.Stable
public class <span class="typeNameLabel">MD5Hash</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>
implements <a href="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&gt;</pre>
<div class="block">A Writable for MD5 hash values.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.Comparator.html" title="class in org.apache.hadoop.io">MD5Hash.Comparator</a></span></code>
<div class="block">A WritableComparator optimized for MD5Hash keys.</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#MD5_LEN">MD5_LEN</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#MD5Hash--">MD5Hash</a></span>()</code>
<div class="block">Constructs an MD5Hash.</div>
</td>
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<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#MD5Hash-byte:A-">MD5Hash</a></span>(byte[]&nbsp;digest)</code>
<div class="block">Constructs an MD5Hash with a specified value.</div>
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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#MD5Hash-java.lang.String-">MD5Hash</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;hex)</code>
<div class="block">Constructs an MD5Hash from a hex string.</div>
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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="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#compareTo-org.apache.hadoop.io.MD5Hash-">compareTo</a></span>(<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;that)</code>
<div class="block">Compares this object with the specified object for order.</div>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#digest-byte:A-">digest</a></span>(byte[]&nbsp;data)</code>
<div class="block">Construct a hash value for a byte array.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#digest-byte:A:A-int-int-">digest</a></span>(byte[][]&nbsp;dataArr,
int&nbsp;start,
int&nbsp;len)</code>
<div class="block">Construct a hash value for an array of byte array.</div>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#digest-byte:A-int-int-">digest</a></span>(byte[]&nbsp;data,
int&nbsp;start,
int&nbsp;len)</code>
<div class="block">Construct a hash value for a byte array.</div>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#digest-java.io.InputStream-">digest</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;in)</code>
<div class="block">Construct a hash value for the content from the InputStream.</div>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#digest-java.lang.String-">digest</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;string)</code>
<div class="block">Construct a hash value for a String.</div>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#digest-org.apache.hadoop.io.UTF8-">digest</a></span>(org.apache.hadoop.io.UTF8&nbsp;utf8)</code>
<div class="block">Construct a hash value for a String.</div>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#equals-java.lang.Object-">equals</a></span>(<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>&nbsp;o)</code>
<div class="block">Returns true iff <code>o</code> is an MD5Hash whose digest contains the
same values.</div>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#getDigest--">getDigest</a></span>()</code>
<div class="block">Returns the digest bytes.</div>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/security/MessageDigest.html?is-external=true" title="class or interface in java.security">MessageDigest</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#getDigester--">getDigester</a></span>()</code>
<div class="block">Create a thread local MD5 digester</div>
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<tr id="i10" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#halfDigest--">halfDigest</a></span>()</code>
<div class="block">Construct a half-sized version of this MD5.</div>
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<tr id="i11" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#hashCode--">hashCode</a></span>()</code>
<div class="block">Returns a hash code value for this object.</div>
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<tr id="i12" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#quarterDigest--">quarterDigest</a></span>()</code>
<div class="block">Return a 32-bit digest of the MD5.</div>
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<tr id="i13" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#read-java.io.DataInput-">read</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a>&nbsp;in)</code>
<div class="block">Constructs, reads and returns an instance.</div>
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<tr id="i14" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#readFields-java.io.DataInput-">readFields</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a>&nbsp;in)</code>
<div class="block">Deserialize the fields of this object from <code>in</code>.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#set-org.apache.hadoop.io.MD5Hash-">set</a></span>(<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;that)</code>
<div class="block">Copy the contents of another instance into this instance.</div>
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<tr id="i16" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#setDigest-java.lang.String-">setDigest</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;hex)</code>
<div class="block">Sets the digest value from a hex string.</div>
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<tr id="i17" class="rowColor">
<td class="colFirst"><code><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/hadoop/io/MD5Hash.html#toString--">toString</a></span>()</code>
<div class="block">Returns a string representation of this object.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/io/MD5Hash.html#write-java.io.DataOutput-">write</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a>&nbsp;out)</code>
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<h3>Methods inherited from class&nbsp;java.lang.<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></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h4>MD5_LEN</h4>
<pre>public static final&nbsp;int MD5_LEN</pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../constant-values.html#org.apache.hadoop.io.MD5Hash.MD5_LEN">Constant Field Values</a></dd>
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<h4>MD5Hash</h4>
<pre>public&nbsp;MD5Hash()</pre>
<div class="block">Constructs an MD5Hash.</div>
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<h4>MD5Hash</h4>
<pre>public&nbsp;MD5Hash(<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;hex)</pre>
<div class="block">Constructs an MD5Hash from a hex string.</div>
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<h4>MD5Hash</h4>
<pre>public&nbsp;MD5Hash(byte[]&nbsp;digest)</pre>
<div class="block">Constructs an MD5Hash with a specified value.</div>
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<h4>readFields</h4>
<pre>public&nbsp;void&nbsp;readFields(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a>&nbsp;in)
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<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/hadoop/io/Writable.html#readFields-java.io.DataInput-">Writable</a></code></span></div>
<div class="block">Deserialize the fields of this object from <code>in</code>.
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>in</code> - <code>DataInput</code> to deseriablize this object from.</dd>
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<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;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;read(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a>&nbsp;in)
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<div class="block">Constructs, reads and returns an instance.</div>
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<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;void&nbsp;write(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a>&nbsp;out)
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<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/hadoop/io/Writable.html#write-java.io.DataOutput-">Writable</a></code></span></div>
<div class="block">Serialize the fields of this object to <code>out</code>.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/hadoop/io/Writable.html#write-java.io.DataOutput-">write</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>out</code> - <code>DataOuput</code> to serialize this object into.</dd>
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<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;void&nbsp;set(<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;that)</pre>
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<pre>public&nbsp;byte[]&nbsp;getDigest()</pre>
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<pre>public static&nbsp;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;digest(byte[]&nbsp;data)</pre>
<div class="block">Construct a hash value for a byte array.</div>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/security/MessageDigest.html?is-external=true" title="class or interface in java.security">MessageDigest</a>&nbsp;getDigester()</pre>
<div class="block">Create a thread local MD5 digester</div>
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<pre>public static&nbsp;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;digest(<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;in)
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<div class="block">Construct a hash value for the content from the InputStream.</div>
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<pre>public static&nbsp;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;digest(byte[]&nbsp;data,
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<div class="block">Construct a hash value for a byte array.</div>
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<pre>public static&nbsp;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;digest(byte[][]&nbsp;dataArr,
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<div class="block">Construct a hash value for an array of byte array.</div>
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<pre>public static&nbsp;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;digest(<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;string)</pre>
<div class="block">Construct a hash value for a String.</div>
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<pre>public static&nbsp;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&nbsp;digest(org.apache.hadoop.io.UTF8&nbsp;utf8)</pre>
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<pre>public&nbsp;long&nbsp;halfDigest()</pre>
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<div class="block">Returns true iff <code>o</code> is an MD5Hash whose digest contains the
same values.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a></code>&nbsp;in class&nbsp;<code><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></code></dd>
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<pre>public&nbsp;int&nbsp;hashCode()</pre>
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<div class="block">Compares this object with the specified object for order.</div>
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<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true#compareTo-T-" title="class or interface in java.lang">compareTo</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../../org/apache/hadoop/io/MD5Hash.html" title="class in org.apache.hadoop.io">MD5Hash</a>&gt;</code></dd>
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<div class="block">Returns a string representation of this object.</div>
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<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a></code>&nbsp;in class&nbsp;<code><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></code></dd>
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<pre>public&nbsp;void&nbsp;setDigest(<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;hex)</pre>
<div class="block">Sets the digest value from a hex string.</div>
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