clarax commented on a change in pull request #3415:
URL: https://github.com/apache/hbase/pull/3415#discussion_r668248743
##########
File path:
hbase-balancer/src/main/java/org/apache/hadoop/hbase/master/balancer/DoubleArrayCost.java
##########
@@ -72,31 +72,13 @@ private static double computeCost(double[] stats) {
double count = stats.length;
double mean = total / count;
- // Compute max as if all region servers had 0 and one had the sum of all
costs. This must be
- // a zero sum cost for this to make sense.
- double max = ((count - 1) * mean) + (total - mean);
-
- // It's possible that there aren't enough regions to go around
- double min;
- if (count > total) {
- min = ((count - total) * mean) + ((1 - mean) * total);
- } else {
- // Some will have 1 more than everything else.
- int numHigh = (int) (total - (Math.floor(mean) * count));
- int numLow = (int) (count - numHigh);
-
- min = (numHigh * (Math.ceil(mean) - mean)) + (numLow * (mean -
Math.floor(mean)));
-
- }
- min = Math.max(0, min);
Review comment:
used later.
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