saintstack commented on pull request #2729:
URL: https://github.com/apache/hbase/pull/2729#issuecomment-748547958
Patch is also incomplete.... needs some more work done
```
$ grep -ri segregate hbase-*/src
hbase-server/src/main/java/org/apache/hadoop/hbase/favored/FavoredNodeLoadBalancer.java:
// Segregate the regions into two types:
hbase-server/src/main/java/org/apache/hadoop/hbase/favored/FavoredNodeLoadBalancer.java:
Pair<Map<ServerName,List<RegionInfo>>, List<RegionInfo>>
segregatedRegions =
hbase-server/src/main/java/org/apache/hadoop/hbase/favored/FavoredNodeLoadBalancer.java:
segregateRegionsAndAssignRegionsWithFavoredNodes(regions, servers);
hbase-server/src/main/java/org/apache/hadoop/hbase/favored/FavoredNodeLoadBalancer.java:
Map<ServerName,List<RegionInfo>> regionsWithFavoredNodesMap =
segregatedRegions.getFirst();
hbase-server/src/main/java/org/apache/hadoop/hbase/favored/FavoredNodeLoadBalancer.java:
List<RegionInfo> regionsWithNoFavoredNodes =
segregatedRegions.getSecond();
hbase-server/src/main/java/org/apache/hadoop/hbase/favored/FavoredNodeLoadBalancer.java:
segregateRegionsAndAssignRegionsWithFavoredNodes(List<RegionInfo> regions,
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.java:
* Round robin assignment: Segregate the regions into two types:
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.java:
// Segregate favored and non-favored nodes regions and assign accordingly.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.java:
Pair<Map<ServerName,List<RegionInfo>>, List<RegionInfo>>
segregatedRegions =
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.java:
segregateRegionsAndAssignRegionsWithFavoredNodes(regionSet, servers);
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.java:
Map<ServerName, List<RegionInfo>> regionsWithFavoredNodesMap =
segregatedRegions.getFirst();
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.java:
generateFNForRegionsWithoutFN(helper, segregatedRegions.getSecond());
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.java:
segregateRegionsAndAssignRegionsWithFavoredNodes(Collection<RegionInfo>
regions,
```
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