[HBASE-7351] Periodic health check chore

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.95.2
• Fix Version/s: 0.94.4, 0.95.0
• Component/s: regionserver
• Hadoop Flags: Reviewed

Release Note

Run a script of your creation on a period. If it fails N times (configurable), have the server exit.

New configs:

 hbase.node.health.script.location
 hbase.node.health.script.timeout
 hbase.node.health.script.frequency Default is every 60seconds.
 hbase.node.health.failure.threshold Defaults to 3.

• Tags: 0.96notable
• Assignee: Vandana Ayyalasomayajula
• Reporter: Vandana Ayyalasomayajula
• Created: 14/Dec/12 00:15
• Updated: 15/Oct/13 04:46
• Resolved: 03/Jan/13 02:13

Description

Similar to MAPREDUCE-211, region server should also have a mechanism to check the health of the node. It should run the health check script periodically and if there is any errors, it should stop itself gracefully.

Sub-Tasks

• Health check chore for HMaster: Closed
• Example health checker script: Closed