org.apache.hadoop.hdfs.server.namenode.ha (Apache Hadoop HDFS 3.5.0 API)
Description: declaration: package: org.apache.hadoop.hdfs.server.namenode.ha

# Package org.apache.hadoop.hdfs.server.namenode.ha

package org.apache.hadoop.hdfs.server.namenode.ha

- Related Packages
  Package
  Description
  org.apache.hadoop.hdfs.server.namenode
  org.apache.hadoop.hdfs.server.namenode.ha.proto
- Class
  Description
  ActiveState
  Active state of the namenode.
  BootstrapStandby
  Tool which allows the standby node's storage directories to be bootstrapped by copying the latest namespace snapshot from the active namenode.
  EditLogTailer
  EditLogTailer represents a thread which periodically reads from edits journals and applies the transactions contained within to a given FSNamesystem.
  HAContext
  Context that is to be used by `HAState` for getting/setting the current state and performing required operations.
  HAState
  Namenode base state to implement state machine pattern.
  NameNodeHAProxyFactory<T>
  RemoteNameNodeInfo
  Information about a single remote NameNode
  StandbyCheckpointer
  Thread which runs inside the NN when it's in Standby state, periodically waking up to take a checkpoint of the namespace.
  StandbyState
  Namenode standby state.