本文整理匯總了Java中org.apache.hadoop.mapreduce.TaskInputOutputContext.getLocalCacheFiles方法的典型用法代碼示例。如果您正苦於以下問題：Java TaskInputOutputContext.getLocalCacheFiles方法的具體用法？Java TaskInputOutputContext.getLocalCacheFiles怎麽用？Java TaskInputOutputContext.getLocalCacheFiles使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.apache.hadoop.mapreduce.TaskInputOutputContext的用法示例。
在下文中一共展示了TaskInputOutputContext.getLocalCacheFiles方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: setup
import org.apache.hadoop.mapreduce.TaskInputOutputContext; //導入方法依賴的package包/類
public void setup(TaskInputOutputContext<?, ?, ?, ?> context)
throws IOException {
Configuration conf = context.getConfiguration();
Path[] localFiles = context.getLocalCacheFiles();
URI[] files = context.getCacheFiles();
Path[] localArchives = context.getLocalCacheArchives();
URI[] archives = context.getCacheArchives();
FileSystem fs = LocalFileSystem.get(conf);
// Check that 2 files and 2 archives are present
TestCase.assertEquals(2, localFiles.length);
TestCase.assertEquals(2, localArchives.length);
TestCase.assertEquals(2, files.length);
TestCase.assertEquals(2, archives.length);
// Check the file name
TestCase.assertTrue(files[0].getPath().endsWith("distributed.first"));
TestCase.assertTrue(files[1].getPath().endsWith("distributed.second.jar"));
// Check lengths of the files
TestCase.assertEquals(1, fs.getFileStatus(localFiles[0]).getLen());
TestCase.assertTrue(fs.getFileStatus(localFiles[1]).getLen() > 1);
// Check extraction of the archive
TestCase.assertTrue(fs.exists(new Path(localArchives[0],
"distributed.jar.inside3")));
TestCase.assertTrue(fs.exists(new Path(localArchives[1],
"distributed.jar.inside4")));
// Check the class loaders
LOG.info("Java Classpath: " + System.getProperty("java.class.path"));
ClassLoader cl = Thread.currentThread().getContextClassLoader();
// Both the file and the archive were added to classpath, so both
// should be reachable via the class loader.
TestCase.assertNotNull(cl.getResource("distributed.jar.inside2"));
TestCase.assertNotNull(cl.getResource("distributed.jar.inside3"));
TestCase.assertNull(cl.getResource("distributed.jar.inside4"));
// Check that the symlink for the renaming was created in the cwd;
TestCase.assertTrue("symlink distributed.first.symlink doesn't exist",
symlinkFile.exists());
TestCase.assertEquals("symlink distributed.first.symlink length not 1", 1,
symlinkFile.length());
//This last one is a difference between MRv2 and MRv1
TestCase.assertTrue("second file should be symlinked too",
expectedAbsentSymlinkFile.exists());
}