Java Code Examples for org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory#getFinalizedTmp()

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Example 1
Source File: NNUpgradeUtil.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
/**
 * Finalize the upgrade. The previous dir, if any, will be renamed and
 * removed. After this is completed, rollback is no longer allowed.
 * 
 * @param sd the storage directory to finalize
 * @throws IOException in the event of error
 */
static void doFinalize(StorageDirectory sd) throws IOException {
  File prevDir = sd.getPreviousDir();
  if (!prevDir.exists()) { // already discarded
    LOG.info("Directory " + prevDir + " does not exist.");
    LOG.info("Finalize upgrade for " + sd.getRoot()+ " is not required.");
    return;
  }
  LOG.info("Finalizing upgrade of storage directory " + sd.getRoot());
  Preconditions.checkState(sd.getCurrentDir().exists(),
      "Current directory must exist.");
  final File tmpDir = sd.getFinalizedTmp();
  // rename previous to tmp and remove
  NNStorage.rename(prevDir, tmpDir);
  NNStorage.deleteDir(tmpDir);
  LOG.info("Finalize upgrade for " + sd.getRoot()+ " is complete.");
}
Example 2
Source File: NNUpgradeUtil.java    From big-c with Apache License 2.0 6 votes vote down vote up 
/**
 * Finalize the upgrade. The previous dir, if any, will be renamed and
 * removed. After this is completed, rollback is no longer allowed.
 * 
 * @param sd the storage directory to finalize
 * @throws IOException in the event of error
 */
static void doFinalize(StorageDirectory sd) throws IOException {
  File prevDir = sd.getPreviousDir();
  if (!prevDir.exists()) { // already discarded
    LOG.info("Directory " + prevDir + " does not exist.");
    LOG.info("Finalize upgrade for " + sd.getRoot()+ " is not required.");
    return;
  }
  LOG.info("Finalizing upgrade of storage directory " + sd.getRoot());
  Preconditions.checkState(sd.getCurrentDir().exists(),
      "Current directory must exist.");
  final File tmpDir = sd.getFinalizedTmp();
  // rename previous to tmp and remove
  NNStorage.rename(prevDir, tmpDir);
  NNStorage.deleteDir(tmpDir);
  LOG.info("Finalize upgrade for " + sd.getRoot()+ " is complete.");
}