Java Code Examples for org.apache.hadoop.hdfs.server.datanode.DataStorage#writeProperties()

The following examples show how to use org.apache.hadoop.hdfs.server.datanode.DataStorage#writeProperties() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: UpgradeUtilities.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
/**
 * Create a <code>version</code> file for datanode 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
 * @param bpidToWrite Block pool Id to write into the version file
 */
public static void createDataNodeVersionFile(File[] parent,
    StorageInfo version, String bpid, String bpidToWrite) throws IOException {
  DataStorage storage = new DataStorage(version);
  storage.setDatanodeUuid("FixedDatanodeUuid");

  File[] versionFiles = new File[parent.length];
  for (int i = 0; i < parent.length; i++) {
    File versionFile = new File(parent[i], "VERSION");
    StorageDirectory sd = new StorageDirectory(parent[i].getParentFile());
    storage.createStorageID(sd, false);
    storage.writeProperties(versionFile, sd);
    versionFiles[i] = versionFile;
    File bpDir = BlockPoolSliceStorage.getBpRoot(bpid, parent[i]);
    createBlockPoolVersionFile(bpDir, version, bpidToWrite);
  }
}
Example 2
Source File: UpgradeUtilities.java    From big-c with Apache License 2.0 6 votes vote down vote up 
/**
 * Create a <code>version</code> file for datanode 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
 * @param bpidToWrite Block pool Id to write into the version file
 */
public static void createDataNodeVersionFile(File[] parent,
    StorageInfo version, String bpid, String bpidToWrite) throws IOException {
  DataStorage storage = new DataStorage(version);
  storage.setDatanodeUuid("FixedDatanodeUuid");

  File[] versionFiles = new File[parent.length];
  for (int i = 0; i < parent.length; i++) {
    File versionFile = new File(parent[i], "VERSION");
    StorageDirectory sd = new StorageDirectory(parent[i].getParentFile());
    storage.createStorageID(sd, false);
    storage.writeProperties(versionFile, sd);
    versionFiles[i] = versionFile;
    File bpDir = BlockPoolSliceStorage.getBpRoot(bpid, parent[i]);
    createBlockPoolVersionFile(bpDir, version, bpidToWrite);
  }
}