Guanghao Zhang created HBASE-17205:
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Summary: Add a metric for the duration of region in transition
Key: HBASE-17205
URL: https://issues.apache.org/jira/browse/HBASE-17205
Project: HBase
Issue Type: Improvement
Components: Region Assignment
Reporter: Guanghao Zhang
Assignee: Guanghao Zhang
Priority: Minor
When work for HBASE-17178, I found there are not a metric for the overall
duration of region in transition. When move a region form A to B, the
transformation of region state is PENDING_CLOSE => CLOSING => CLOSED =>
PENDING_OPEN => OPENING => OPENED. When transform old region state to new
region state, it update the time stamp to current time. So we can't get the
overall transformation's duration of region in transition. Add a rit duration
to RegionState for accumulating this metric.
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