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| <h2 title="Class NativeRuntime" class="title">Class NativeRuntime</h2> |
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| <pre>@InterfaceAudience.Private |
| public class <span class="typeNameLabel">NativeRuntime</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">This class stands for the native runtime It has three functions: |
| 1. Create native handlers for map, reduce, outputcollector, etc |
| 2. Configure native task with provided MR configs |
| 3. Provide file system api to native space, so that it can use File system like HDFS.</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/nativetask/NativeRuntime.html#NativeRuntime--">NativeRuntime</a></span>()</code> </td> |
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| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/nativetask/NativeRuntime.html#configure-org.apache.hadoop.conf.Configuration-">configure</a></span>(org.apache.hadoop.conf.Configuration jobConf)</code> </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/hadoop/mapred/nativetask/NativeRuntime.html#createNativeObject-java.lang.String-">createNativeObject</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> clazz)</code> |
| <div class="block">create native object We use it to create native handlers</div> |
| </td> |
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| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/nativetask/NativeRuntime.html#isNativeLibraryLoaded--">isNativeLibraryLoaded</a></span>()</code> </td> |
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| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/nativetask/NativeRuntime.html#registerLibrary-java.lang.String-java.lang.String-">registerLibrary</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> libraryName, |
| <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> clazz)</code> |
| <div class="block">Register a customized library</div> |
| </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/hadoop/mapred/nativetask/NativeRuntime.html#releaseNativeObject-long-">releaseNativeObject</a></span>(long addr)</code> |
| <div class="block">destroy native object We use to destroy native handlers</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/nativetask/NativeRuntime.html#reportStatus-org.apache.hadoop.mapred.Task.TaskReporter-">reportStatus</a></span>(org.apache.hadoop.mapred.Task.TaskReporter reporter)</code> |
| <div class="block">Get the status report from native space</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/nativetask/NativeRuntime.html#supportsCompressionCodec-byte:A-">supportsCompressionCodec</a></span>(byte[] codec)</code> |
| <div class="block">Check whether the native side has compression codec support built in</div> |
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| <h4>NativeRuntime</h4> |
| <pre>public NativeRuntime()</pre> |
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| <pre>public static boolean isNativeLibraryLoaded()</pre> |
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| <pre>public static void configure(org.apache.hadoop.conf.Configuration jobConf)</pre> |
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| <h4>createNativeObject</h4> |
| <pre>public static long createNativeObject(<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> clazz)</pre> |
| <div class="block">create native object We use it to create native handlers</div> |
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| <pre>public static long registerLibrary(<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> libraryName, |
| <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> clazz)</pre> |
| <div class="block">Register a customized library</div> |
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| <pre>public static void releaseNativeObject(long addr)</pre> |
| <div class="block">destroy native object We use to destroy native handlers</div> |
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| <pre>public static void reportStatus(org.apache.hadoop.mapred.Task.TaskReporter reporter) |
| 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">Get the status report from native space</div> |
| <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 boolean supportsCompressionCodec(byte[] codec)</pre> |
| <div class="block">Check whether the native side has compression codec support built in</div> |
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