hadoop CosNConfigKeys 源码

haddop CosNConfigKeys 代码

文件路径：/hadoop-cloud-storage-project/hadoop-cos/src/main/java/org/apache/hadoop/fs/cosn/CosNConfigKeys.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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.hadoop.fs.cosn;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.CommonConfigurationKeys;

/**
 * This class contains constants for configuration keys used in COS.
 */
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class CosNConfigKeys extends CommonConfigurationKeys {
  public static final String USER_AGENT = "fs.cosn.user.agent";
  public static final String DEFAULT_USER_AGENT = "cos-hadoop-plugin-v5.3";

  public static final String COSN_CREDENTIALS_PROVIDER =
      "fs.cosn.credentials.provider";
  public static final String COSN_SECRET_ID_KEY = "fs.cosn.userinfo.secretId";
  public static final String COSN_SECRET_KEY_KEY = "fs.cosn.userinfo.secretKey";
  public static final String COSN_REGION_KEY = "fs.cosn.bucket.region";
  public static final String COSN_ENDPOINT_SUFFIX_KEY =
      "fs.cosn.bucket.endpoint_suffix";

  public static final String COSN_USE_HTTPS_KEY = "fs.cosn.useHttps";
  public static final boolean DEFAULT_USE_HTTPS = false;

  public static final String COSN_BUFFER_DIR_KEY = "fs.cosn.tmp.dir";
  public static final String DEFAULT_BUFFER_DIR = "/tmp/hadoop_cos";

  public static final String COSN_UPLOAD_BUFFER_SIZE_KEY =
      "fs.cosn.buffer.size";
  public static final long DEFAULT_UPLOAD_BUFFER_SIZE = 32 * Unit.MB;

  public static final String COSN_BLOCK_SIZE_KEY = "fs.cosn.block.size";
  public static final long DEFAULT_BLOCK_SIZE = 8 * Unit.MB;

  public static final String COSN_MAX_RETRIES_KEY = "fs.cosn.maxRetries";
  public static final int DEFAULT_MAX_RETRIES = 3;
  public static final String COSN_RETRY_INTERVAL_KEY =
      "fs.cosn.retry.interval.seconds";
  public static final long DEFAULT_RETRY_INTERVAL = 3;

  public static final String UPLOAD_THREAD_POOL_SIZE_KEY =
      "fs.cosn.upload_thread_pool";
  public static final int DEFAULT_UPLOAD_THREAD_POOL_SIZE = 1;

  public static final String COPY_THREAD_POOL_SIZE_KEY =
      "fs.cosn.copy_thread_pool";
  public static final int DEFAULT_COPY_THREAD_POOL_SIZE = 1;

  /**
   * This is the maximum time that excess idle threads will wait for new tasks
   * before terminating. The time unit for it is second.
   */
  public static final String THREAD_KEEP_ALIVE_TIME_KEY =
      "fs.cosn.threads.keep_alive_time";
  // The default keep_alive_time is 60 seconds.
  public static final long DEFAULT_THREAD_KEEP_ALIVE_TIME = 60L;

  public static final String READ_AHEAD_BLOCK_SIZE_KEY =
      "fs.cosn.read.ahead.block.size";
  public static final long DEFAULT_READ_AHEAD_BLOCK_SIZE = 512 * Unit.KB;
  public static final String READ_AHEAD_QUEUE_SIZE =
      "fs.cosn.read.ahead.queue.size";
  public static final int DEFAULT_READ_AHEAD_QUEUE_SIZE = 5;

  public static final String MAX_CONNECTION_NUM = "fs.cosn.max.connection.num";
  public static final int DEFAULT_MAX_CONNECTION_NUM = 2048;
}

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