shenxingwuying created KUDU-3389:
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Summary: support turning on/off auto rebalancer at runtime
Key: KUDU-3389
URL: https://issues.apache.org/jira/browse/KUDU-3389
Project: Kudu
Issue Type: Improvement
Reporter: shenxingwuying
kudu-master supports auto-rebalancer, but it must be decided whether enable it
before kudu master starting. If users want to change the flag, they should
change the gflag and restart masters.
So supporting to turn on/off `auto rebalancer` when kudu-master running is a
good idea.
We can use gflag --auto_rebalancing_enabled to do this job.
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