stack created HBASE-8716:
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Summary: Fixups/Improvements for graceful_stop.sh/region_mover.rb
Key: HBASE-8716
URL: https://issues.apache.org/jira/browse/HBASE-8716
Project: HBase
Issue Type: Improvement
Reporter: stack
Assignee: stack
It is a while since these scripts were touched. Giving them a spring cleaning
and seeing if can make them return error codes on failure (seems like style
previous was that the operator would watch the output and react to it but I see
cases where tools want to call these scripts and they want return code to
indicate whether the rolling upgrade worked or not). Also, see if can make the
rolling restart faster since one-by-one while minimally disruptive and 'safe',
it is slow one clusters of hundreds of nodes.
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