alluxio-master-2.x/underfs/hdfs/src/main/java/alluxio/underfs/hdfs/NoopHdfsActiveSyncProvider.java
/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.underfs.hdfs;

import alluxio.AlluxioURI;
import alluxio.SyncInfo;

/**
 * The noop HDFS Active Sync provider.
 */
public class NoopHdfsActiveSyncProvider implements HdfsActiveSyncProvider {
  @Override
  public SyncInfo getActivitySyncInfo() {
    return SyncInfo.emptyInfo();
  }

  @Override
  public boolean startPolling(long txId) {
    return false;
  }

  @Override
  public boolean stopPolling() {
    return false;
  }

  @Override
  public void startSync(AlluxioURI ufsUri) {
  }

  @Override
  public void stopSync(AlluxioURI ufsUri) {
  }
}
