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HBASE-8710 The balancer shouldn't try balancing one node (James Kinley via JD)

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git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1528564 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jean-Daniel Cryans 2013-10-02 17:08:47 +00:00
parent 18d9251a77
commit 3d0c0cb394
1 changed files with 6 additions and 2 deletions
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8
hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.java
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@ -54,6 +54,7 @@ import com.google.common.collect.Sets;
* *
*/ */
public abstract class BaseLoadBalancer implements LoadBalancer { public abstract class BaseLoadBalancer implements LoadBalancer {
private static final int MIN_SERVER_BALANCE = 2;
private volatile boolean stopped = false; private volatile boolean stopped = false;
/** /**
@ -377,8 +378,11 @@ public abstract class BaseLoadBalancer implements LoadBalancer {
} }
protected boolean needsBalance(ClusterLoadState cs) { protected boolean needsBalance(ClusterLoadState cs) {
if (cs.getNumServers() == 0) { if (cs.getNumServers() < MIN_SERVER_BALANCE) {
LOG.debug("numServers=0 so skipping load balancing"); if (LOG.isDebugEnabled()) {
LOG.debug("Not running balancer because only " + cs.getNumServers()
+ " active regionserver(s)");
}
return false; return false;
} }
// Check if we even need to do any load balancing // Check if we even need to do any load balancing