[GitHub] [helix] jiajunwang commented on issue #466: Integrate the WAGED rebalancer with all the related components.

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jiajunwang commented on issue #466: Integrate the WAGED rebalancer with all the related components.
URL: https://github.com/apache/helix/pull/466#issuecomment-531395357
 
 
   > If the constraint factory/wagedRebalancer fails to produce the mapping, should we put the cluster in maintenance mode or treat it as a NOP? I'd like to guide us to think about in what scenarios putting the cluster under maintenance would be appropriate.
   
   The current design returns the previous mapping if a calculation fails (this is not done yet). Entering maintenance mode means we need to auto exist as well. This makes maintenance mode management more complicated. So I would prefer keeping it simple for now.

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