Package org.apache.hadoop.hdfs.protocol
package org.apache.hadoop.hdfs.protocol
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ClassDescriptionNamenode class that tracks state related to a cached path.Directory has too many itemsPath component length is too longLayoutFlags represent features which the FSImage and edit logs can either support or not, independently of layout version.This class tracks changes in the layout version of HDFS.Enums for features that change the layout version before rolling upgrade is supported.Feature information.The interface to be implemented by NameNode and DataNode layout featuresException indicating that a replica is already being recovery.Exception related to rolling upgrade.Snapshot related exception.SnapshotInfo maintains information for a snapshotThis exception is thrown when a node that has not previously registered is trying to access the name node.