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HBASE-12697 Don't use RegionLocationFinder if localityCost == 0

This commit is contained in:
Elliott Clark 2014-12-15 19:11:54 -08:00
parent 30424ec73f
commit 8426f1f53a
1 changed files with 10 additions and 1 deletions
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11
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java
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@ -229,10 +229,19 @@ public class StochasticLoadBalancer extends BaseLoadBalancer {
clusterState.remove(masterServerName);
}
// On clusters with lots of HFileLinks or lots of reference files,
// instantiating the storefile infos can be quite expensive.
// Allow turning this feature off if the locality cost is not going to
// be used in any computations.
RegionLocationFinder finder = null;
if (this.localityCost != null && this.localityCost.getMultiplier() > 0) {
finder = this.regionFinder;
}
//The clusterState that is given to this method contains the state
//of all the regions in the table(s) (that's true today)
// Keep track of servers to iterate through them.
Cluster cluster = new Cluster(clusterState, loads, regionFinder, rackManager);
Cluster cluster = new Cluster(clusterState, loads, finder, rackManager);
if (!needsBalance(cluster)) {
return null;
}