[GitHub] [ozone] siddhantsangwan commented on pull request #2808: HDDS-5517. Support multiple container moves from a source datanode in one balance iteration

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siddhantsangwan commented on pull request #2808:
URL: https://github.com/apache/ozone/pull/2808#issuecomment-966897707


   Also, please note the following concern that was raised [here](https://github.com/apache/ozone/pull/2230#discussion_r630705685) for an earlier version of balancer. 
   
   > Question:
   > 
   > say we have a 10 DN cluster, the usage of all of them is 95%, then one empty DN is added to rebalance the cluster. Given the threshold is 10%, it seems the balancer will not work in this case, since that 10 DN will not achieve upperLimit.
   > 
   > Have we consider corner case like this ?
   
   By removing `withinThresholdUtilizedNodes`, we rely on the user setting a suitable threshold to make balancing work in such cases.


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