lang/java/avro/src/main/java/org/apache/avro/file/DataFileConstants.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.avro.file;

/**
 * Constants used in data files.
 */
public class DataFileConstants {
  private DataFileConstants() {}                  // no public ctor

  public static final byte VERSION = 1;
  public static final byte[] MAGIC = new byte[] {
    (byte)'O', (byte)'b', (byte)'j', VERSION
  };
  public static final long FOOTER_BLOCK = -1;
  public static final int SYNC_SIZE = 16;
  public static final int DEFAULT_SYNC_INTERVAL = 1000*SYNC_SIZE; 

  public static final String SCHEMA = "avro.schema";
  public static final String CODEC = "avro.codec";
  public static final String NULL_CODEC = "null";
  public static final String DEFLATE_CODEC = "deflate";

}