Java Code Examples for org.iq80.leveldb.WriteBatch#delete()

The following examples show how to use org.iq80.leveldb.WriteBatch#delete() . 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: NMLeveldbStateStoreService.java From hadoop with Apache License 2.0

6 votes

@Override
public void removeContainer(ContainerId containerId)
    throws IOException {
  if (LOG.isDebugEnabled()) {
    LOG.debug("removeContainer: containerId=" + containerId);
  }

  String keyPrefix = CONTAINERS_KEY_PREFIX + containerId.toString();
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      batch.delete(bytes(keyPrefix + CONTAINER_REQUEST_KEY_SUFFIX));
      batch.delete(bytes(keyPrefix + CONTAINER_DIAGS_KEY_SUFFIX));
      batch.delete(bytes(keyPrefix + CONTAINER_LAUNCHED_KEY_SUFFIX));
      batch.delete(bytes(keyPrefix + CONTAINER_KILLED_KEY_SUFFIX));
      batch.delete(bytes(keyPrefix + CONTAINER_EXIT_CODE_KEY_SUFFIX));
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 2

Source File: NMLeveldbStateStoreService.java From hadoop with Apache License 2.0

6 votes

@Override
public void removeApplication(ApplicationId appId)
    throws IOException {
  if (LOG.isDebugEnabled()) {
    LOG.debug("removeApplication: appId=" + appId);
  }

  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      String key = APPLICATIONS_KEY_PREFIX + appId;
      batch.delete(bytes(key));
      key = FINISHED_APPS_KEY_PREFIX + appId;
      batch.delete(bytes(key));
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 3

Source File: NMLeveldbStateStoreService.java From hadoop with Apache License 2.0

6 votes

@Override
public void finishResourceLocalization(String user, ApplicationId appId,
    LocalizedResourceProto proto) throws IOException {
  String localPath = proto.getLocalPath();
  String startedKey = getResourceStartedKey(user, appId, localPath);
  String completedKey = getResourceCompletedKey(user, appId, localPath);
  if (LOG.isDebugEnabled()) {
    LOG.debug("Storing localized resource to " + completedKey);
  }
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      batch.delete(bytes(startedKey));
      batch.put(bytes(completedKey), proto.toByteArray());
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 4

Source File: NMLeveldbStateStoreService.java From hadoop with Apache License 2.0

6 votes

@Override
public void removeLocalizedResource(String user, ApplicationId appId,
    Path localPath) throws IOException {
  String localPathStr = localPath.toString();
  String startedKey = getResourceStartedKey(user, appId, localPathStr);
  String completedKey = getResourceCompletedKey(user, appId, localPathStr);
  if (LOG.isDebugEnabled()) {
    LOG.debug("Removing local resource at " + localPathStr);
  }
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      batch.delete(bytes(startedKey));
      batch.delete(bytes(completedKey));
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 5

Source File: LeveldbRMStateStore.java From hadoop with Apache License 2.0

6 votes

@Override
protected void removeApplicationStateInternal(ApplicationStateData appState)
    throws IOException {
  ApplicationId appId =
      appState.getApplicationSubmissionContext().getApplicationId();
  String appKey = getApplicationNodeKey(appId);
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      batch.delete(bytes(appKey));
      for (ApplicationAttemptId attemptId : appState.attempts.keySet()) {
        String attemptKey = getApplicationAttemptNodeKey(appKey, attemptId);
        batch.delete(bytes(attemptKey));
      }
      if (LOG.isDebugEnabled()) {
        LOG.debug("Removing state for app " + appId + " and "
            + appState.attempts.size() + " attempts" + " at " + appKey);
      }
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 6

Source File: NMLeveldbStateStoreService.java From big-c with Apache License 2.0

6 votes

@Override
public void removeContainer(ContainerId containerId)
    throws IOException {
  String keyPrefix = CONTAINERS_KEY_PREFIX + containerId.toString();
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      batch.delete(bytes(keyPrefix + CONTAINER_REQUEST_KEY_SUFFIX));
      batch.delete(bytes(keyPrefix + CONTAINER_DIAGS_KEY_SUFFIX));
      batch.delete(bytes(keyPrefix + CONTAINER_LAUNCHED_KEY_SUFFIX));
      batch.delete(bytes(keyPrefix + CONTAINER_KILLED_KEY_SUFFIX));
      batch.delete(bytes(keyPrefix + CONTAINER_EXIT_CODE_KEY_SUFFIX));
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 7

Source File: NMLeveldbStateStoreService.java From big-c with Apache License 2.0

6 votes

@Override
public void removeApplication(ApplicationId appId)
    throws IOException {
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      String key = APPLICATIONS_KEY_PREFIX + appId;
      batch.delete(bytes(key));
      key = FINISHED_APPS_KEY_PREFIX + appId;
      batch.delete(bytes(key));
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 8

Source File: NMLeveldbStateStoreService.java From big-c with Apache License 2.0

6 votes

@Override
public void finishResourceLocalization(String user, ApplicationId appId,
    LocalizedResourceProto proto) throws IOException {
  String localPath = proto.getLocalPath();
  String startedKey = getResourceStartedKey(user, appId, localPath);
  String completedKey = getResourceCompletedKey(user, appId, localPath);
  if (LOG.isDebugEnabled()) {
    LOG.debug("Storing localized resource to " + completedKey);
  }
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      batch.delete(bytes(startedKey));
      batch.put(bytes(completedKey), proto.toByteArray());
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 9

Source File: NMLeveldbStateStoreService.java From big-c with Apache License 2.0

6 votes

@Override
public void removeLocalizedResource(String user, ApplicationId appId,
    Path localPath) throws IOException {
  String localPathStr = localPath.toString();
  String startedKey = getResourceStartedKey(user, appId, localPathStr);
  String completedKey = getResourceCompletedKey(user, appId, localPathStr);
  if (LOG.isDebugEnabled()) {
    LOG.debug("Removing local resource at " + localPathStr);
  }
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      batch.delete(bytes(startedKey));
      batch.delete(bytes(completedKey));
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 10

Source File: LeveldbRMStateStore.java From big-c with Apache License 2.0

6 votes

@Override
protected void removeApplicationStateInternal(ApplicationStateData appState)
    throws IOException {
  ApplicationId appId =
      appState.getApplicationSubmissionContext().getApplicationId();
  String appKey = getApplicationNodeKey(appId);
  try {
    WriteBatch batch = db.createWriteBatch();
    try {
      batch.delete(bytes(appKey));
      for (ApplicationAttemptId attemptId : appState.attempts.keySet()) {
        String attemptKey = getApplicationAttemptNodeKey(appKey, attemptId);
        batch.delete(bytes(attemptKey));
      }
      if (LOG.isDebugEnabled()) {
        LOG.debug("Removing state for app " + appId + " and "
            + appState.attempts.size() + " attempts" + " at " + appKey);
      }
      db.write(batch);
    } finally {
      batch.close();
    }
  } catch (DBException e) {
    throw new IOException(e);
  }
}

Example 11

Source File: StandaloneStoreClient.java From warp10-platform with Apache License 2.0

4 votes

@Override
public long delete(WriteToken token, Metadata metadata, long start, long end) throws IOException {
  
  //
  // Regen classId/labelsId
  //
  
  // 128BITS
  metadata.setLabelsId(GTSHelper.labelsId(this.keystore.getKey(KeyStore.SIPHASH_LABELS), metadata.getLabels()));
  metadata.setClassId(GTSHelper.classId(this.keystore.getKey(KeyStore.SIPHASH_CLASS), metadata.getName()));

  //
  // Retrieve an iterator
  //
  
  DBIterator iterator = this.db.iterator();
  //
  // Seek the most recent key
  //
  
  // 128BITS
  byte[] bend = new byte[Constants.HBASE_RAW_DATA_KEY_PREFIX.length + 8 + 8 + 8];
  ByteBuffer bb = ByteBuffer.wrap(bend).order(ByteOrder.BIG_ENDIAN);
  bb.put(Constants.HBASE_RAW_DATA_KEY_PREFIX);
  bb.putLong(metadata.getClassId());
  bb.putLong(metadata.getLabelsId());
  bb.putLong(Long.MAX_VALUE - end);

  iterator.seek(bend);
  
  byte[] bstart = new byte[bend.length];
  bb = ByteBuffer.wrap(bstart).order(ByteOrder.BIG_ENDIAN);
  bb.put(Constants.HBASE_RAW_DATA_KEY_PREFIX);
  bb.putLong(metadata.getClassId());
  bb.putLong(metadata.getLabelsId());
  bb.putLong(Long.MAX_VALUE - start);
  
  //
  // Scan the iterator, deleting keys if they are between start and end
  //
  
  long count = 0L;
  
  WriteBatch batch = this.db.createWriteBatch();
  int batchsize = 0;
  
  WriteOptions options = new WriteOptions().sync(1.0 == syncrate);
              
  while (iterator.hasNext()) {
    Entry<byte[],byte[]> entry = iterator.next();

    if (Bytes.compareTo(entry.getKey(), bend) >= 0 && Bytes.compareTo(entry.getKey(), bstart) <= 0) {
      batch.delete(entry.getKey());
      batchsize++;
      
      if (MAX_DELETE_BATCHSIZE <= batchsize) {
        if (syncwrites) {
          options = new WriteOptions().sync(Math.random() < syncrate);
        }
        this.db.write(batch, options);
        batch.close();
        batch = this.db.createWriteBatch();
        batchsize = 0;
      }
      //this.db.delete(entry.getKey());
      count++;
    } else {
      break;
    }
  }
  
  if (batchsize > 0) {
    if (syncwrites) {
      options = new WriteOptions().sync(Math.random() < syncrate);
    }
    this.db.write(batch, options);
  }

  iterator.close();
  batch.close();
  
  return count;
}