Jackson Yao created HDDS-5757:
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Summary: balancer can not stop at the right time
Key: HDDS-5757
URL: https://issues.apache.org/jira/browse/HDDS-5757
Project: Apache Ozone
Issue Type: Sub-task
Reporter: Jackson Yao
when i test container balancer in k8s cluster, i use the command line :
./ozone admin containerbalancer start -i -1 -t 0.000001 -d 1 -s 500, and set
the contaienr size to 1G.
i found that balancer thread can not stop when the cluster is close to balance.
suppose we have three datanodes d1,d2,d3(disk usage are 67G, 67G, 68G), and the
fourth d4 datanode's disk usage is 1G. when i start balancer, it begin to
balance and work well, many containers have been moved from d1,d2,d3 to d4. but
when the cluster is close to balance(the disk usages of the four datanodes are
50G,51G,50G,51G), the balancer is still running , it will move container among
those datanodes again and again.
so we should let the balancer thread exit when the cluster can not be more
balancer
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