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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1018) Regionservers should report detailed health to master; master should flag troubled regionservers in UI
Date Sat, 22 Nov 2008 19:12:44 GMT
Regionservers should report detailed health to master; master should flag troubled regionservers
in UI
------------------------------------------------------------------------------------------------------

                 Key: HBASE-1018
                 URL: https://issues.apache.org/jira/browse/HBASE-1018
             Project: Hadoop HBase
          Issue Type: New Feature
          Components: master, regionserver
            Reporter: Andrew Purtell
             Fix For: 0.19.0


Regionservers should report detailed health to master. The master should flag troubled regionservers
in the UI.

The concern at the moment is primarily heap. Regionservers should report used, committed,
and max heap metrics in the periodic report. The master should flag in the regionserver list
on /master.jsp those regionservers where available heap is below a configurable threshold.


The required changes to support this can be expanded/extended later to implement more of the
Service Historian idea (see HBASE-773). 


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