Java SnapshotSentinel.isFinished方法代码示例

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Check to see if there is a snapshot in progress with the same name or on the same table.
 * Currently we have a limitation only allowing a single snapshot per table at a time. Also we
 * don't allow snapshot with the same name.
 * @param snapshot description of the snapshot being checked.
 * @return <tt>true</tt> if there is a snapshot in progress with the same name or on the same
 *         table.
 */
synchronized boolean isTakingSnapshot(final SnapshotDescription snapshot) {
  TableName snapshotTable = TableName.valueOf(snapshot.getTable());
  if (isTakingSnapshot(snapshotTable)) {
    return true;
  }
  Iterator<Map.Entry<TableName, SnapshotSentinel>> it = this.snapshotHandlers.entrySet().iterator();
  while (it.hasNext()) {
    Map.Entry<TableName, SnapshotSentinel> entry = it.next();
    SnapshotSentinel sentinel = entry.getValue();
    if (snapshot.getName().equals(sentinel.getSnapshot().getName()) && !sentinel.isFinished()) {
      return true;
    }
  }
  return false;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Return the handler if it is currently live and has the same snapshot target name.
 * The handler is removed from the sentinels map if completed.
 * @param sentinels live handlers
 * @param snapshot snapshot description
 * @return null if doesn't match, else a live handler.
 */
private synchronized SnapshotSentinel removeSentinelIfFinished(
    final Map<TableName, SnapshotSentinel> sentinels,
    final SnapshotDescription snapshot) {
  if (!snapshot.hasTable()) {
    return null;
  }

  TableName snapshotTable = TableName.valueOf(snapshot.getTable());
  SnapshotSentinel h = sentinels.get(snapshotTable);
  if (h == null) {
    return null;
  }

  if (!h.getSnapshot().getName().equals(snapshot.getName())) {
    // specified snapshot is to the one currently running
    return null;
  }

  // Remove from the "in-progress" list once completed
  if (h.isFinished()) {
    sentinels.remove(snapshotTable);
  }

  return h;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Return the handler if it is currently live and has the same snapshot target name.
 * The handler is removed from the sentinels map if completed.
 * @param sentinels live handlers
 * @param snapshot snapshot description
 * @return null if doesn't match, else a live handler.
 */
private synchronized SnapshotSentinel removeSentinelIfFinished(
    final Map<String, SnapshotSentinel> sentinels, final SnapshotDescription snapshot) {
  SnapshotSentinel h = sentinels.get(snapshot.getTable());
  if (h == null) {
    return null;
  }

  if (!h.getSnapshot().getName().equals(snapshot.getName())) {
    // specified snapshot is to the one currently running
    return null;
  }

  // Remove from the "in-progress" list once completed
  if (h.isFinished()) {
    sentinels.remove(snapshot.getTable());
  }

  return h;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Returns the status of a restore operation.
 * If the in-progress restore is failed throws the exception that caused the failure.
 *
 * @param snapshot
 * @return false if in progress, true if restore is completed or not requested.
 * @throws IOException if there was a failure during the restore
 */
public boolean isRestoreDone(final SnapshotDescription snapshot) throws IOException {
  // check to see if the sentinel exists,
  // and if the task is complete removes it from the in-progress restore map.
  SnapshotSentinel sentinel = removeSentinelIfFinished(this.restoreHandlers, snapshot);

  // stop tracking "abandoned" handlers
  cleanupSentinels();

  if (sentinel == null) {
    // there is no sentinel so restore is not in progress.
    return true;
  }

  LOG.debug("Verify snapshot=" + snapshot.getName() + " against="
      + sentinel.getSnapshot().getName() + " table=" +
      TableName.valueOf(snapshot.getTable()));

  // If the restore is failed, rethrow the exception
  sentinel.rethrowExceptionIfFailed();

  // check to see if we are done
  if (sentinel.isFinished()) {
    LOG.debug("Restore snapshot=" + ClientSnapshotDescriptionUtils.toString(snapshot) +
        " has completed. Notifying the client.");
    return true;
  }

  if (LOG.isDebugEnabled()) {
    LOG.debug("Sentinel is not yet finished with restoring snapshot=" +
        ClientSnapshotDescriptionUtils.toString(snapshot));
  }
  return false;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Remove the sentinels that are marked as finished and the completion time
 * has exceeded the removal timeout.
 * @param sentinels map of sentinels to clean
 */
private synchronized void cleanupSentinels(final Map<TableName, SnapshotSentinel> sentinels) {
  long currentTime = EnvironmentEdgeManager.currentTime();
  Iterator<Map.Entry<TableName, SnapshotSentinel>> it =
      sentinels.entrySet().iterator();
  while (it.hasNext()) {
    Map.Entry<TableName, SnapshotSentinel> entry = it.next();
    SnapshotSentinel sentinel = entry.getValue();
    if (sentinel.isFinished() &&
        (currentTime - sentinel.getCompletionTimestamp()) > SNAPSHOT_SENTINELS_CLEANUP_TIMEOUT)
    {
      it.remove();
    }
  }
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Check to see if there is a snapshot in progress with the same name or on the same table.
 * Currently we have a limitation only allowing a single snapshot per table at a time. Also we
 * don't allow snapshot with the same name.
 * @param snapshot description of the snapshot being checked.
 * @return <tt>true</tt> if there is a snapshot in progress with the same name or on the same
 *         table.
 */
synchronized boolean isTakingSnapshot(final SnapshotDescription snapshot) {
  if (isTakingSnapshot(snapshot.getTable())) {
    return true;
  }
  Iterator<Map.Entry<String, SnapshotSentinel>> it = this.snapshotHandlers.entrySet().iterator();
  while (it.hasNext()) {
    Map.Entry<String, SnapshotSentinel> entry = it.next();
    SnapshotSentinel sentinel = entry.getValue();
    if (snapshot.getName().equals(sentinel.getSnapshot().getName()) && !sentinel.isFinished()) {
      return true;
    }
  }
  return false;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Returns the status of a restore operation.
 * If the in-progress restore is failed throws the exception that caused the failure.
 *
 * @param snapshot
 * @return false if in progress, true if restore is completed or not requested.
 * @throws IOException if there was a failure during the restore
 */
public boolean isRestoreDone(final SnapshotDescription snapshot) throws IOException {
  // check to see if the sentinel exists,
  // and if the task is complete removes it from the in-progress restore map.
  SnapshotSentinel sentinel = removeSentinelIfFinished(this.restoreHandlers, snapshot);

  // stop tracking "abandoned" handlers
  cleanupSentinels();

  if (sentinel == null) {
    // there is no sentinel so restore is not in progress.
    return true;
  }

  LOG.debug("Verify snapshot=" + snapshot.getName() + " against="
      + sentinel.getSnapshot().getName() + " table=" + snapshot.getTable());

  // If the restore is failed, rethrow the exception
  sentinel.rethrowExceptionIfFailed();

  // check to see if we are done
  if (sentinel.isFinished()) {
    LOG.debug("Restore snapshot=" + SnapshotDescriptionUtils.toString(snapshot) +
        " has completed. Notifying the client.");
    return true;
  }

  if (LOG.isDebugEnabled()) {
    LOG.debug("Sentinel is not yet finished with restoring snapshot=" +
        SnapshotDescriptionUtils.toString(snapshot));
  }
  return false;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Remove the sentinels that are marked as finished and the completion time
 * has exceeded the removal timeout.
 * @param sentinels map of sentinels to clean
 */
private synchronized void cleanupSentinels(final Map<String, SnapshotSentinel> sentinels) {
  long currentTime = EnvironmentEdgeManager.currentTimeMillis();
  Iterator<Map.Entry<String, SnapshotSentinel>> it = sentinels.entrySet().iterator();
  while (it.hasNext()) {
    Map.Entry<String, SnapshotSentinel> entry = it.next();
    SnapshotSentinel sentinel = entry.getValue();
    if (sentinel.isFinished() &&
        (currentTime - sentinel.getCompletionTimestamp()) > SNAPSHOT_SENTINELS_CLEANUP_TIMEOUT)
    {
      it.remove();
    }
  }
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Remove the sentinels that are marked as finished and the completion time
 * has exceeded the removal timeout.
 * @param sentinels map of sentinels to clean
 */
private synchronized void cleanupSentinels(final Map<TableName, SnapshotSentinel> sentinels) {
  long currentTime = EnvironmentEdgeManager.currentTimeMillis();
  Iterator<Map.Entry<TableName, SnapshotSentinel>> it =
      sentinels.entrySet().iterator();
  while (it.hasNext()) {
    Map.Entry<TableName, SnapshotSentinel> entry = it.next();
    SnapshotSentinel sentinel = entry.getValue();
    if (sentinel.isFinished() &&
        (currentTime - sentinel.getCompletionTimestamp()) > SNAPSHOT_SENTINELS_CLEANUP_TIMEOUT)
    {
      it.remove();
    }
  }
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Check if the specified snapshot is done
 *
 * @param expected
 * @return true if snapshot is ready to be restored, false if it is still being taken.
 * @throws IOException IOException if error from HDFS or RPC
 * @throws UnknownSnapshotException if snapshot is invalid or does not exist.
 */
public boolean isSnapshotDone(SnapshotDescription expected) throws IOException {
  // check the request to make sure it has a snapshot
  if (expected == null) {
    throw new UnknownSnapshotException(
       "No snapshot name passed in request, can't figure out which snapshot you want to check.");
  }

  String ssString = ClientSnapshotDescriptionUtils.toString(expected);

  // check to see if the sentinel exists,
  // and if the task is complete removes it from the in-progress snapshots map.
  SnapshotSentinel handler = removeSentinelIfFinished(this.snapshotHandlers, expected);

  // stop tracking "abandoned" handlers
  cleanupSentinels();

  if (handler == null) {
    // If there's no handler in the in-progress map, it means one of the following:
    //   - someone has already requested the snapshot state
    //   - the requested snapshot was completed long time ago (cleanupSentinels() timeout)
    //   - the snapshot was never requested
    // In those cases returns to the user the "done state" if the snapshots exists on disk,
    // otherwise raise an exception saying that the snapshot is not running and doesn't exist.
    if (!isSnapshotCompleted(expected)) {
      throw new UnknownSnapshotException("Snapshot " + ssString
          + " is not currently running or one of the known completed snapshots.");
    }
    // was done, return true;
    return true;
  }

  // pass on any failure we find in the sentinel
  try {
    handler.rethrowExceptionIfFailed();
  } catch (ForeignException e) {
    // Give some procedure info on an exception.
    String status;
    Procedure p = coordinator.getProcedure(expected.getName());
    if (p != null) {
      status = p.getStatus();
    } else {
      status = expected.getName() + " not found in proclist " + coordinator.getProcedureNames();
    }
    throw new HBaseSnapshotException("Snapshot " + ssString +  " had an error.  " + status, e,
        expected);
  }

  // check to see if we are done
  if (handler.isFinished()) {
    LOG.debug("Snapshot '" + ssString + "' has completed, notifying client.");
    return true;
  } else if (LOG.isDebugEnabled()) {
    LOG.debug("Snapshoting '" + ssString + "' is still in progress!");
  }
  return false;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Check if the specified snapshot is done
 *
 * @param expected
 * @return true if snapshot is ready to be restored, false if it is still being taken.
 * @throws IOException IOException if error from HDFS or RPC
 * @throws UnknownSnapshotException if snapshot is invalid or does not exist.
 */
public boolean isSnapshotDone(SnapshotDescription expected) throws IOException {
  // check the request to make sure it has a snapshot
  if (expected == null) {
    throw new UnknownSnapshotException(
       "No snapshot name passed in request, can't figure out which snapshot you want to check.");
  }

  String ssString = SnapshotDescriptionUtils.toString(expected);

  // check to see if the sentinel exists,
  // and if the task is complete removes it from the in-progress snapshots map.
  SnapshotSentinel handler = removeSentinelIfFinished(this.snapshotHandlers, expected);

  // stop tracking "abandoned" handlers
  cleanupSentinels();

  if (handler == null) {
    // If there's no handler in the in-progress map, it means one of the following:
    //   - someone has already requested the snapshot state
    //   - the requested snapshot was completed long time ago (cleanupSentinels() timeout)
    //   - the snapshot was never requested
    // In those cases returns to the user the "done state" if the snapshots exists on disk,
    // otherwise raise an exception saying that the snapshot is not running and doesn't exist.
    if (!isSnapshotCompleted(expected)) {
      throw new UnknownSnapshotException("Snapshot " + ssString
          + " is not currently running or one of the known completed snapshots.");
    }
    // was done, return true;
    return true;
  }

  // pass on any failure we find in the sentinel
  try {
    handler.rethrowExceptionIfFailed();
  } catch (ForeignException e) {
    // Give some procedure info on an exception.
    String status;
    Procedure p = coordinator.getProcedure(expected.getName());
    if (p != null) {
      status = p.getStatus();
    } else {
      status = expected.getName() + " not found in proclist " + coordinator.getProcedureNames();
    }
    throw new HBaseSnapshotException("Snapshot " + ssString +  " had an error.  " + status, e,
        expected);
  }

  // check to see if we are done
  if (handler.isFinished()) {
    LOG.debug("Snapshot '" + ssString + "' has completed, notifying client.");
    return true;
  } else if (LOG.isDebugEnabled()) {
    LOG.debug("Snapshoting '" + ssString + "' is still in progress!");
  }
  return false;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Check if the specified snapshot is done
 *
 * @param expected
 * @return true if snapshot is ready to be restored, false if it is still being taken.
 * @throws IOException IOException if error from HDFS or RPC
 * @throws UnknownSnapshotException if snapshot is invalid or does not exist.
 */
public boolean isSnapshotDone(SnapshotDescription expected) throws IOException {
  // check the request to make sure it has a snapshot
  if (expected == null) {
    throw new UnknownSnapshotException(
       "No snapshot name passed in request, can't figure out which snapshot you want to check.");
  }

  String ssString = ClientSnapshotDescriptionUtils.toString(expected);

  // check to see if the sentinel exists,
  // and if the task is complete removes it from the in-progress snapshots map.
  SnapshotSentinel handler = removeSentinelIfFinished(this.snapshotHandlers, expected);

  // stop tracking "abandoned" handlers
  cleanupSentinels();

  if (handler == null) {
    // If there's no handler in the in-progress map, it means one of the following:
    //   - someone has already requested the snapshot state
    //   - the requested snapshot was completed long time ago (cleanupSentinels() timeout)
    //   - the snapshot was never requested
    // In those cases returns to the user the "done state" if the snapshots exists on disk,
    // otherwise raise an exception saying that the snapshot is not running and doesn't exist.
    if (!isSnapshotCompleted(expected)) {
      throw new UnknownSnapshotException("Snapshot " + ssString
          + " is not currently running or one of the known completed snapshots.");
    }
    // was done, return true;
    return true;
  }

  // pass on any failure we find in the sentinel
  try {
    handler.rethrowExceptionIfFailed();
  } catch (ForeignException e) {
    // Give some procedure info on an exception.
    String status;
    Procedure p = coordinator.getProcedure(expected.getName());
    if (p != null) {
      status = p.getStatus();
    } else {
      status = expected.getName() + " not found in proclist " + coordinator.getProcedureNames();
    }
    throw new HBaseSnapshotException("Snapshot " + ssString +  " had an error.  " + status, e,
      ProtobufUtil.createSnapshotDesc(expected));
  }

  // check to see if we are done
  if (handler.isFinished()) {
    LOG.debug("Snapshot '" + ssString + "' has completed, notifying client.");
    return true;
  } else if (LOG.isDebugEnabled()) {
    LOG.debug("Snapshoting '" + ssString + "' is still in progress!");
  }
  return false;
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Verify if the restore of the specified table is in progress.
 *
 * @param tableName table under restore
 * @return <tt>true</tt> if there is a restore in progress of the specified table.
 */
private synchronized boolean isRestoringTable(final TableName tableName) {
  SnapshotSentinel sentinel = this.restoreHandlers.get(tableName);
  return(sentinel != null && !sentinel.isFinished());
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Verify if the restore of the specified table is in progress.
 *
 * @param tableName table under restore
 * @return <tt>true</tt> if there is a restore in progress of the specified table.
 */
private synchronized boolean isRestoringTable(final String tableName) {
  SnapshotSentinel sentinel = this.restoreHandlers.get(tableName);
  return(sentinel != null && !sentinel.isFinished());
}
 

import org.apache.hadoop.hbase.master.SnapshotSentinel; //导入方法依赖的package包/类
/**
 * Check to see if the specified table has a snapshot in progress.  Currently we have a
 * limitation only allowing a single snapshot per table at a time.
 * @param tableName name of the table being snapshotted.
 * @return <tt>true</tt> if there is a snapshot in progress on the specified table.
 */
synchronized boolean isTakingSnapshot(final TableName tableName) {
  SnapshotSentinel handler = this.snapshotHandlers.get(tableName);
  return handler != null && !handler.isFinished();
}