Package org.apache.hadoop.hdfs.qjournal.server

Interface JournalNodeMXBean

@Public @Evolving public interface JournalNodeMXBean
This is the JMX management interface for JournalNode information

  • Method Details

    • 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.