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

Interface SecondaryNameNodeInfoMXBean

All Superinterfaces:

VersionInfoMXBean

All Known Implementing Classes:

SecondaryNameNode

@Private
@Evolving
public interface SecondaryNameNodeInfoMXBean
extends VersionInfoMXBean

JMX information of the secondary NameNode

Method Summary

Modifier and Type	Method	Description
java.lang.String[]	getCheckpointDirectories()
java.lang.String[]	getCheckpointEditlogDirectories()
java.lang.String	getHostAndPort()	Gets the host and port colon separated.
long	getLastCheckpointDeltaMs()
long	getLastCheckpointTime()
long	getStartTime()
boolean	isSecurityEnabled()	Gets if security is enabled.

Methods inherited from interface org.apache.hadoop.hdfs.server.namenode.VersionInfoMXBean

getCompileInfo, getSoftwareVersion

Method Detail

getHostAndPort

java.lang.String getHostAndPort()

Gets the host and port colon separated.

isSecurityEnabled

boolean isSecurityEnabled()

Gets if security is enabled.

Returns:

true, if security is enabled.

getStartTime

long getStartTime()

Returns:

the timestamp of when the SNN starts

getLastCheckpointTime

long getLastCheckpointTime()

Returns:

the timestamp of the last checkpoint

getLastCheckpointDeltaMs

long getLastCheckpointDeltaMs()

Returns:

the number of msec since the last checkpoint, or -1 if no checkpoint has been done yet.

getCheckpointDirectories

java.lang.String[] getCheckpointDirectories()

Returns:

the directories that store the checkpoint images

getCheckpointEditlogDirectories

java.lang.String[] getCheckpointEditlogDirectories()

Returns:

the directories that store the edit logs