org.apache.hadoop.hdfs.qjournal.server

Interface JournalNodeMXBean

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public interface JournalNodeMXBean

This is the JMX management interface for JournalNode information

Method Summary

Modifier and Type	Method and Description
List<String>	getClusterIds() Get list of the clusters of JournalNode's journals as one JournalNode may support multiple clusters.
String	getHostAndPort() Get host and port of JournalNode.
long	getJNStartedTimeInMillis() Get the start time of the JournalNode.
String	getJournalsStatus() Get status information (e.g., whether formatted) of JournalNode's journals.
List<String>	getStorageInfos() Get the list of the storage infos of JournalNode's journals.
String	getVersion() Gets the version of Hadoop.

Method Detail

getJournalsStatus

String getJournalsStatus()

Get status information (e.g., whether formatted) of JournalNode's journals.

Returns:

A string presenting status for each journal

getHostAndPort

String getHostAndPort()

Get host and port of JournalNode.

Returns:

colon separated host and port.

getClusterIds

List<String> getClusterIds()

Get list of the clusters of JournalNode's journals as one JournalNode may support multiple clusters.

Returns:

list of clusters.

getVersion

String getVersion()

Gets the version of Hadoop.

Returns:

the version of Hadoop.

getJNStartedTimeInMillis

long getJNStartedTimeInMillis()

Get the start time of the JournalNode.

Returns:

the start time of the JournalNode.

getStorageInfos

List<String> getStorageInfos()

Get the list of the storage infos of JournalNode's journals. Storage infos include layout version, namespace id, cluster id and creation time of the File system state.

Returns:

the list of storage infos associated with journals.