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Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.protocol | |
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SafeModeException
This exception is thrown when the name node is in safe mode. |
Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.security.token.delegation | |
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FSNamesystem
FSNamesystem does the actual bookkeeping work for the DataNode. |
Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.common | |
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DatanodeDescriptor
DatanodeDescriptor tracks stats on a given DataNode, such as available storage capacity, last update time, etc., and maintains a set of blocks stored on the datanode. |
Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.namenode | |
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BlockPlacementPolicy
This interface is used for choosing the desired number of targets for placing block replicas. |
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CheckpointSignature
A unique signature intended to identify checkpoint transactions. |
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DatanodeDescriptor
DatanodeDescriptor tracks stats on a given DataNode, such as available storage capacity, last update time, etc., and maintains a set of blocks stored on the datanode. |
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FSClusterStats
This interface is used for retrieving the load related statistics of the cluster. |
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FSEditLog
FSEditLog maintains a log of the namespace modifications. |
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FSImage
FSImage handles checkpointing and logging of the namespace edits. |
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FSInodeInfo
This interface is used used the pluggable block placement policy to expose a few characteristics of an Inode. |
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FSNamesystem
FSNamesystem does the actual bookkeeping work for the DataNode. |
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LeaseManager
LeaseManager does the lease housekeeping for writing on files. |
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NameNode
NameNode serves as both directory namespace manager and "inode table" for the Hadoop DFS. |
Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.namenode.metrics | |
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FSNamesystem
FSNamesystem does the actual bookkeeping work for the DataNode. |
Classes in org.apache.hadoop.hdfs.server.namenode used by org.apache.hadoop.hdfs.server.protocol | |
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CheckpointSignature
A unique signature intended to identify checkpoint transactions. |
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DatanodeDescriptor.BlockTargetPair
Block and targets pair |
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