leventov opened a new issue #7128: Wrong order in BalancerStrategy.pickServersToDrop() URL: https://github.com/apache/incubator-druid/issues/7128 `ServerHolder` are sorted by *available* space, so `NavigableSet<ServerHolder>` (unless uses `Comparator.reverseOrder()`) have ServerHolders with the *most* available space in the end. Therefore `set.descendingIterator()` suggests to drop segment from least utilized servers first, that's the opposite of what should be done. However, I think that this default implementation should just be removed because `BalancerStrategy` is not annotated `@ExtensionPoint` and all production implementations of `BalancerStrategy` override this method. Then the signature should be simplified too, accepting any `Collection<ServerHolder>` rather than only `NavigableSet`. FYI @clintropolis
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