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Suresh Srinivas updated HDFS-1974: ---------------------------------- Attachment: HDFS-1974.4.patch Changes: # Added HA enabled checks in to some of the methods # Added Journal OperationCategory type and it is allowed only in BackupNode. # Removed methods in BackupNode in lieu of checks already made in NameNode. > HA: Introduce active and standby states to the namenode > ------------------------------------------------------- > > Key: HDFS-1974 > URL: https://issues.apache.org/jira/browse/HDFS-1974 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: name-node > Reporter: Suresh Srinivas > Assignee: Suresh Srinivas > Attachments: HDFS-1974.1.patch, HDFS-1974.2.patch, HDFS-1974.3.patch, > HDFS-1974.4.patch, HDFS-1974.patch > > > Currently namenode supports active, secondary and backup roles. To support > namenode high availability, active and standby states are needed. Note that > this is different from the existing notion of namenode role, where a namenode > cannot transition from one role to the other. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira