本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker.CheckedVolume类的典型用法代码示例。如果您正苦于以下问题：Java CheckedVolume类的具体用法？Java CheckedVolume怎么用？Java CheckedVolume使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
CheckedVolume类属于org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker包，在下文中一共展示了CheckedVolume类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testLowResourceVolumePolicy
import org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker.CheckedVolume; //导入依赖的package包/类
/**
* Test that the NN is considered to be out of resources only once all
* redundant configured volumes are low on resources, or when any required
* volume is low on resources.
*/
@Test
public void testLowResourceVolumePolicy() throws IOException, URISyntaxException {
Configuration conf = new Configuration();
File nameDir1 = new File(BASE_DIR, "name-dir1");
File nameDir2 = new File(BASE_DIR, "name-dir2");
nameDir1.mkdirs();
nameDir2.mkdirs();
conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY,
nameDir1.getAbsolutePath() + "," + nameDir2.getAbsolutePath());
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKED_VOLUMES_MINIMUM_KEY, 2);
NameNodeResourceChecker nnrc = new NameNodeResourceChecker(conf);
// For the purpose of this test, we need to force the name dirs to appear to
// be on different volumes.
Map<String, CheckedVolume> volumes = new HashMap<String, CheckedVolume>();
CheckedVolume volume1 = Mockito.mock(CheckedVolume.class);
CheckedVolume volume2 = Mockito.mock(CheckedVolume.class);
CheckedVolume volume3 = Mockito.mock(CheckedVolume.class);
CheckedVolume volume4 = Mockito.mock(CheckedVolume.class);
CheckedVolume volume5 = Mockito.mock(CheckedVolume.class);
Mockito.when(volume1.isResourceAvailable()).thenReturn(true);
Mockito.when(volume2.isResourceAvailable()).thenReturn(true);
Mockito.when(volume3.isResourceAvailable()).thenReturn(true);
Mockito.when(volume4.isResourceAvailable()).thenReturn(true);
Mockito.when(volume5.isResourceAvailable()).thenReturn(true);
// Make volumes 4 and 5 required.
Mockito.when(volume4.isRequired()).thenReturn(true);
Mockito.when(volume5.isRequired()).thenReturn(true);
volumes.put("volume1", volume1);
volumes.put("volume2", volume2);
volumes.put("volume3", volume3);
volumes.put("volume4", volume4);
volumes.put("volume5", volume5);
nnrc.setVolumes(volumes);
// Initially all dirs have space.
assertTrue(nnrc.hasAvailableDiskSpace());
// 1/3 redundant dir is low on space.
Mockito.when(volume1.isResourceAvailable()).thenReturn(false);
assertTrue(nnrc.hasAvailableDiskSpace());
// 2/3 redundant dirs are low on space.
Mockito.when(volume2.isResourceAvailable()).thenReturn(false);
assertFalse(nnrc.hasAvailableDiskSpace());
// Lower the minimum number of redundant volumes that must be available.
nnrc.setMinimumReduntdantVolumes(1);
assertTrue(nnrc.hasAvailableDiskSpace());
// Just one required dir is low on space.
Mockito.when(volume3.isResourceAvailable()).thenReturn(false);
assertFalse(nnrc.hasAvailableDiskSpace());
// Just the other required dir is low on space.
Mockito.when(volume3.isResourceAvailable()).thenReturn(true);
Mockito.when(volume4.isResourceAvailable()).thenReturn(false);
assertFalse(nnrc.hasAvailableDiskSpace());
}
示例2: testLowResourceVolumePolicy
import org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker.CheckedVolume; //导入依赖的package包/类
/**
* Test that the NN is considered to be out of resources only once all
* redundant configured volumes are low on resources, or when any required
* volume is low on resources.
*/
@Test
public void testLowResourceVolumePolicy() throws IOException, URISyntaxException {
Configuration conf = new Configuration();
File nameDir1 = new File(System.getProperty("test.build.data"), "name-dir1");
File nameDir2 = new File(System.getProperty("test.build.data"), "name-dir2");
nameDir1.mkdirs();
nameDir2.mkdirs();
conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY,
nameDir1.getAbsolutePath() + "," + nameDir2.getAbsolutePath());
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKED_VOLUMES_MINIMUM_KEY, 2);
NameNodeResourceChecker nnrc = new NameNodeResourceChecker(conf);
// For the purpose of this test, we need to force the name dirs to appear to
// be on different volumes.
Map<String, CheckedVolume> volumes = new HashMap<String, CheckedVolume>();
CheckedVolume volume1 = Mockito.mock(CheckedVolume.class);
CheckedVolume volume2 = Mockito.mock(CheckedVolume.class);
CheckedVolume volume3 = Mockito.mock(CheckedVolume.class);
CheckedVolume volume4 = Mockito.mock(CheckedVolume.class);
CheckedVolume volume5 = Mockito.mock(CheckedVolume.class);
Mockito.when(volume1.isResourceAvailable()).thenReturn(true);
Mockito.when(volume2.isResourceAvailable()).thenReturn(true);
Mockito.when(volume3.isResourceAvailable()).thenReturn(true);
Mockito.when(volume4.isResourceAvailable()).thenReturn(true);
Mockito.when(volume5.isResourceAvailable()).thenReturn(true);
// Make volumes 4 and 5 required.
Mockito.when(volume4.isRequired()).thenReturn(true);
Mockito.when(volume5.isRequired()).thenReturn(true);
volumes.put("volume1", volume1);
volumes.put("volume2", volume2);
volumes.put("volume3", volume3);
volumes.put("volume4", volume4);
volumes.put("volume5", volume5);
nnrc.setVolumes(volumes);
// Initially all dirs have space.
assertTrue(nnrc.hasAvailableDiskSpace());
// 1/3 redundant dir is low on space.
Mockito.when(volume1.isResourceAvailable()).thenReturn(false);
assertTrue(nnrc.hasAvailableDiskSpace());
// 2/3 redundant dirs are low on space.
Mockito.when(volume2.isResourceAvailable()).thenReturn(false);
assertFalse(nnrc.hasAvailableDiskSpace());
// Lower the minimum number of redundant volumes that must be available.
nnrc.setMinimumReduntdantVolumes(1);
assertTrue(nnrc.hasAvailableDiskSpace());
// Just one required dir is low on space.
Mockito.when(volume3.isResourceAvailable()).thenReturn(false);
assertFalse(nnrc.hasAvailableDiskSpace());
// Just the other required dir is low on space.
Mockito.when(volume3.isResourceAvailable()).thenReturn(true);
Mockito.when(volume4.isResourceAvailable()).thenReturn(false);
assertFalse(nnrc.hasAvailableDiskSpace());
}