本文整理汇总了Java中org.apache.hadoop.hdfs.server.common.Storage.writeProperties方法的典型用法代码示例。如果您正苦于以下问题：Java Storage.writeProperties方法的具体用法？Java Storage.writeProperties怎么用？Java Storage.writeProperties使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hdfs.server.common.Storage的用法示例。
在下文中一共展示了Storage.writeProperties方法的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: doUpgrade
import org.apache.hadoop.hdfs.server.common.Storage; //导入方法依赖的package包/类
/**
* Perform the upgrade of the storage dir to the given storage info. The new
* storage info is written into the current directory, and the previous.tmp
* directory is renamed to previous.
*
* @param sd the storage directory to upgrade
* @param storage info about the new upgraded versions.
* @throws IOException in the event of error
*/
public static void doUpgrade(StorageDirectory sd, Storage storage)
throws IOException {
LOG.info("Performing upgrade of storage directory " + sd.getRoot());
try {
// Write the version file, since saveFsImage only makes the
// fsimage_<txid>, and the directory is otherwise empty.
storage.writeProperties(sd);
File prevDir = sd.getPreviousDir();
File tmpDir = sd.getPreviousTmp();
Preconditions.checkState(!prevDir.exists(),
"previous directory must not exist for upgrade.");
Preconditions.checkState(tmpDir.exists(),
"previous.tmp directory must exist for upgrade.");
// rename tmp to previous
NNStorage.rename(tmpDir, prevDir);
} catch (IOException ioe) {
LOG.error("Unable to rename temp to previous for " + sd.getRoot(), ioe);
throw ioe;
}
}
示例2: createNameNodeVersionFile
import org.apache.hadoop.hdfs.server.common.Storage; //导入方法依赖的package包/类
/**
* Create a <code>version</code> file for namenode inside the specified parent
* directory. If such a file already exists, it will be overwritten.
* The given version string will be written to the file as the layout
* version. None of the parameters may be null.
*
* @param parent directory where namenode VERSION file is stored
* @param version StorageInfo to create VERSION file from
* @param bpid Block pool Id
*
* @return the created version file
*/
public static File[] createNameNodeVersionFile(Configuration conf,
File[] parent, StorageInfo version, String bpid) throws IOException {
Storage storage = new NNStorage(conf,
Collections.<URI>emptyList(),
Collections.<URI>emptyList());
storage.setStorageInfo(version);
File[] versionFiles = new File[parent.length];
for (int i = 0; i < parent.length; i++) {
versionFiles[i] = new File(parent[i], "VERSION");
StorageDirectory sd = new StorageDirectory(parent[i].getParentFile());
storage.writeProperties(versionFiles[i], sd);
}
return versionFiles;
}