Review Board 1.7.22


HBase-4348 Add metrics for regions in transition

Review Request #4402 - Created March 19, 2012 and updated

Himanshu Vashishtha
trunk
HBase-4348
Reviewers
hbase
hbase-git
This patch is for adding Region in transition metrics to the HMaster metrics system. It also adds these metrics in the master ui, in the Region in transition section. I have attached the proposed new format in the jira 4348.
Ran on a 5 node cluster and kill region servers randomly to observe the changes in the RIT metrics as emitted out by the Master's mxbean;

mvn test passes without any failure.
Review request changed
Updated (April 4, 2012, 9:47 p.m.)
Changed the name of the property for defining the threshold time limit to show the Region in transitions in UI; ans other nits from Ted.
Ship it!
Posted (April 5, 2012, 12:41 a.m.)
I'm happy with this.  Ted do you have comments?  If no, I'll commit in about 24 hours.
I like this name.