本文整理汇总了Java中org.apache.hadoop.hdfs.server.datanode.DataNodeLayoutVersion类的典型用法代码示例。如果您正苦于以下问题：Java DataNodeLayoutVersion类的具体用法？Java DataNodeLayoutVersion怎么用？Java DataNodeLayoutVersion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。
DataNodeLayoutVersion类属于org.apache.hadoop.hdfs.server.datanode包，在下文中一共展示了DataNodeLayoutVersion类的5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: addDataNodeLayoutVersion
import org.apache.hadoop.hdfs.server.datanode.DataNodeLayoutVersion; //导入依赖的package包/类
public static void addDataNodeLayoutVersion(final int lv, final String description)
throws NoSuchFieldException, IllegalAccessException {
Preconditions.checkState(lv < DataNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
// Override {@link DataNodeLayoutVersion#CURRENT_LAYOUT_VERSION} via reflection.
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
Field field = DataNodeLayoutVersion.class.getField("CURRENT_LAYOUT_VERSION");
field.setAccessible(true);
modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
field.setInt(null, lv);
// Override {@link HdfsConstants#DATANODE_LAYOUT_VERSION}
field = HdfsConstants.class.getField("DATANODE_LAYOUT_VERSION");
field.setAccessible(true);
modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
field.setInt(null, lv);
// Inject the feature into the FEATURES map.
final LayoutVersion.FeatureInfo featureInfo =
new LayoutVersion.FeatureInfo(lv, lv + 1, description, false);
final LayoutVersion.LayoutFeature feature =
new LayoutVersion.LayoutFeature() {
@Override
public LayoutVersion.FeatureInfo getInfo() {
return featureInfo;
}
};
// Update the FEATURES map with the new layout version.
LayoutVersion.updateMap(DataNodeLayoutVersion.FEATURES,
new LayoutVersion.LayoutFeature[] { feature });
}
示例2: testDataNodeFeature
import org.apache.hadoop.hdfs.server.datanode.DataNodeLayoutVersion; //导入依赖的package包/类
/**
* Test to make sure DataNode.Feature support previous features
*/
@Test
public void testDataNodeFeature() {
final LayoutFeature first = DataNodeLayoutVersion.Feature.FIRST_LAYOUT;
assertTrue(DataNodeLayoutVersion.supports(LAST_NON_RESERVED_COMMON_FEATURE,
first.getInfo().getLayoutVersion()));
assertEquals(LAST_COMMON_FEATURE.getInfo().getLayoutVersion() - 1,
first.getInfo().getLayoutVersion());
}
示例3: createBlockPoolVersionFile
import org.apache.hadoop.hdfs.server.datanode.DataNodeLayoutVersion; //导入依赖的package包/类
public static void createBlockPoolVersionFile(File bpDir,
StorageInfo version, String bpid) throws IOException {
// Create block pool version files
if (DataNodeLayoutVersion.supports(
LayoutVersion.Feature.FEDERATION, version.layoutVersion)) {
File bpCurDir = new File(bpDir, Storage.STORAGE_DIR_CURRENT);
BlockPoolSliceStorage bpStorage = new BlockPoolSliceStorage(version,
bpid);
File versionFile = new File(bpCurDir, "VERSION");
StorageDirectory sd = new StorageDirectory(bpDir);
bpStorage.writeProperties(versionFile, sd);
}
}
示例4: addDataNodeLayoutVersion
import org.apache.hadoop.hdfs.server.datanode.DataNodeLayoutVersion; //导入依赖的package包/类
public static void addDataNodeLayoutVersion(final int lv, final String description)
throws NoSuchFieldException, IllegalAccessException {
Preconditions.checkState(lv < DataNodeLayoutVersion.CURRENT_LAYOUT_VERSION);
// Override {@link DataNodeLayoutVersion#CURRENT_LAYOUT_VERSION} via reflection.
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
Field field = DataNodeLayoutVersion.class.getField("CURRENT_LAYOUT_VERSION");
field.setAccessible(true);
modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
field.setInt(null, lv);
field = HdfsServerConstants.class.getField("DATANODE_LAYOUT_VERSION");
field.setAccessible(true);
modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
field.setInt(null, lv);
// Inject the feature into the FEATURES map.
final LayoutVersion.FeatureInfo featureInfo =
new LayoutVersion.FeatureInfo(lv, lv + 1, description, false);
final LayoutVersion.LayoutFeature feature =
new LayoutVersion.LayoutFeature() {
@Override
public LayoutVersion.FeatureInfo getInfo() {
return featureInfo;
}
};
// Update the FEATURES map with the new layout version.
LayoutVersion.updateMap(DataNodeLayoutVersion.FEATURES,
new LayoutVersion.LayoutFeature[] { feature });
}
示例5: getServiceLayoutFeatureMap
import org.apache.hadoop.hdfs.server.datanode.DataNodeLayoutVersion; //导入依赖的package包/类
public Map<Integer, SortedSet<LayoutFeature>> getServiceLayoutFeatureMap() {
return storageType == NodeType.DATA_NODE? DataNodeLayoutVersion.FEATURES
: NameNodeLayoutVersion.FEATURES;
}