程序包org.apache.hadoop.hdfs.server.datanode的分层结构

程序包分层结构:

• 所有程序包

类分层结构

• java.lang.Object
  • org.apache.hadoop.hdfs.server.datanode.BlockMetadataHeader
  • org.apache.hadoop.conf.Configured (implements org.apache.hadoop.conf.Configurable)
    • org.apache.hadoop.hdfs.server.datanode.DataNode (implements org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol, org.apache.hadoop.hdfs.server.datanode.DataNodeMXBean, org.apache.hadoop.hdfs.protocol.FSConstants, org.apache.hadoop.hdfs.server.protocol.InterDatanodeProtocol, java.lang.Runnable)
  • org.apache.hadoop.hdfs.server.datanode.FSDataset (implements org.apache.hadoop.hdfs.protocol.FSConstants, org.apache.hadoop.hdfs.server.datanode.FSDatasetInterface)
  • org.apache.hadoop.hdfs.server.datanode.FSDatasetInterface.BlockInputStreams (implements java.io.Closeable)
  • org.apache.hadoop.hdfs.server.datanode.FSDatasetInterface.BlockWriteStreams
  • java.io.InputStream (implements java.io.Closeable)
    • java.io.FilterInputStream
      • org.apache.hadoop.hdfs.server.datanode.FSDatasetInterface.MetaDataInputStream
  • org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter (implements org.apache.commons.daemon.Daemon)
  • org.apache.hadoop.hdfs.server.datanode.SecureDataNodeStarter.SecureResources
  • org.apache.hadoop.hdfs.server.common.StorageInfo
    • org.apache.hadoop.hdfs.server.common.Storage
      • org.apache.hadoop.hdfs.server.datanode.DataStorage
  • org.apache.hadoop.hdfs.server.common.UpgradeObject (implements org.apache.hadoop.hdfs.server.common.Upgradeable)
    • org.apache.hadoop.hdfs.server.datanode.UpgradeObjectDatanode (implements java.lang.Runnable)

接口分层结构

• org.apache.hadoop.hdfs.server.datanode.DataNodeMXBean
• org.apache.hadoop.hdfs.server.datanode.metrics.FSDatasetMBean
  • org.apache.hadoop.hdfs.server.datanode.FSDatasetInterface