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

package org.apache.hadoop.hdfs.server.namenode.ha
  • Class
    Description
    org.apache.hadoop.hdfs.server.namenode.ha.AbstractNNFailoverProxyProvider<T>
     
    org.apache.hadoop.hdfs.server.namenode.ha.AbstractNNFailoverProxyProvider.NNProxyInfo<T>
    ProxyInfo to a NameNode.
    org.apache.hadoop.hdfs.server.namenode.ha.ActiveState
    Active state of the namenode.
    org.apache.hadoop.hdfs.server.namenode.ha.BootstrapStandby
    Tool which allows the standby node's storage directories to be bootstrapped by copying the latest namespace snapshot from the active namenode.
    org.apache.hadoop.hdfs.server.namenode.ha.ClientHAProxyFactory<T>
     
    org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider<T>
    A FailoverProxyProvider implementation which allows one to configure multiple URIs to connect to during fail-over.
    org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer
    EditLogTailer represents a thread which periodically reads from edits journals and applies the transactions contained within to a given FSNamesystem.
    org.apache.hadoop.hdfs.server.namenode.ha.HAContext
    Context that is to be used by HAState for getting/setting the current state and performing required operations.
    org.apache.hadoop.hdfs.server.namenode.ha.HAProxyFactory<T>
    This interface aims to decouple the proxy creation implementation that used in AbstractNNFailoverProxyProvider.
    org.apache.hadoop.hdfs.server.namenode.ha.HAState
    Namenode base state to implement state machine pattern.
    org.apache.hadoop.hdfs.server.namenode.ha.InMemoryAliasMapFailoverProxyProvider<T>
    A ConfiguredFailoverProxyProvider implementation used to connect to an InMemoryAliasMap.
    org.apache.hadoop.hdfs.server.namenode.ha.IPFailoverProxyProvider<T>
    A NNFailoverProxyProvider implementation which works on IP failover setup.
    org.apache.hadoop.hdfs.server.namenode.ha.NameNodeHAProxyFactory<T>
     
    org.apache.hadoop.hdfs.server.namenode.ha.ObserverReadProxyProvider<T>
    A FailoverProxyProvider implementation that supports reading from observer namenode(s).
    org.apache.hadoop.hdfs.server.namenode.ha.ObserverReadProxyProviderWithIPFailover<T extends org.apache.hadoop.hdfs.protocol.ClientProtocol>
    Extends ObserverReadProxyProvider to support NameNode IP failover.
    org.apache.hadoop.hdfs.server.namenode.ha.ReadOnly
    Marker interface used to annotate methods that are readonly.
    org.apache.hadoop.hdfs.server.namenode.ha.RemoteNameNodeInfo
    Information about a single remote NameNode
    org.apache.hadoop.hdfs.server.namenode.ha.RequestHedgingProxyProvider<T>
    A FailoverProxyProvider implementation that technically does not "failover" per-se.
    org.apache.hadoop.hdfs.server.namenode.ha.RouterObserverReadConfiguredFailoverProxyProvider<T>
    A FailoverProxyProvider implementation to support automatic msync-ing when using routers.
    org.apache.hadoop.hdfs.server.namenode.ha.RouterObserverReadProxyProvider<T>
    A FailoverProxyProvider implementation to support automatic msync-ing when using routers.
    org.apache.hadoop.hdfs.server.namenode.ha.StandbyCheckpointer
    Thread which runs inside the NN when it's in Standby state, periodically waking up to take a checkpoint of the namespace.
    org.apache.hadoop.hdfs.server.namenode.ha.StandbyState
    Namenode standby state.
    org.apache.hadoop.hdfs.server.namenode.ha.WrappedFailoverProxyProvider<T>
    A NNFailoverProxyProvider implementation which wrapps old implementations directly implementing the FailoverProxyProvider interface.