[HDFS-239] Brief, baseline namenode health check

• Type: New Feature
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Christopher Douglas
• Created: 15/Jul/08 22:37
• Updated: 02/May/13 02:29

Description

It would be helpful if there were a way to query the namenode to verify that it is basically healthy. In particular, that all the expected threads are running, data structures appear sane, etc. Administrators could use this interface to verify that the namenode is both up and essentially functional, attaching cron jobs, notification, etc. as required.

Issue Links

• depends upon: HDFS-326 Add a lifecycle interface for Hadoop components: namenodes, job clients, etc.
• is related to: HDFS-373 Name node should notify administrator if when struggling with replication