Author: stack
Date: Thu Sep 9 05:43:13 2010
New Revision: 995318
URL: http://svn.apache.org/viewvc?rev=995318&view=rev
Log:
HBASE-2974 LoadBalancer ArithmeticException: / by zero
Modified:
hbase/trunk/CHANGES.txt
hbase/trunk/src/main/java/org/apache/hadoop/hbase/master/LoadBalancer.java
Modified: hbase/trunk/CHANGES.txt
URL:
http://svn.apache.org/viewvc/hbase/trunk/CHANGES.txt?rev=995318&r1=995317&r2=995318&view=diff
==============================================================================
--- hbase/trunk/CHANGES.txt (original)
+++ hbase/trunk/CHANGES.txt Thu Sep 9 05:43:13 2010
@@ -514,6 +514,7 @@ Release 0.21.0 - Unreleased
HBASE-2969 missing sync in HTablePool.getTable()
(Guilherme Mauro Germoglio Barbosa via Stack)
HBASE-2973 NPE in LogCleaner
+ HBASE-2974 LoadBalancer ArithmeticException: / by zero
IMPROVEMENTS
HBASE-1760 Cleanup TODOs in HTable
Modified:
hbase/trunk/src/main/java/org/apache/hadoop/hbase/master/LoadBalancer.java
URL:
http://svn.apache.org/viewvc/hbase/trunk/src/main/java/org/apache/hadoop/hbase/master/LoadBalancer.java?rev=995318&r1=995317&r2=995318&view=diff
==============================================================================
--- hbase/trunk/src/main/java/org/apache/hadoop/hbase/master/LoadBalancer.java
(original)
+++ hbase/trunk/src/main/java/org/apache/hadoop/hbase/master/LoadBalancer.java
Thu Sep 9 05:43:13 2010
@@ -140,6 +140,10 @@ public class LoadBalancer {
new TreeMap<HServerInfo,List<HRegionInfo>>(
new HServerInfo.LoadComparator());
int numServers = clusterState.size();
+ if (numServers == 0) {
+ LOG.debug("numServers=0 so nothing to balance");
+ return null;
+ }
int numRegions = 0;
// Iterate so we can count regions as we build the map
for(Map.Entry<HServerInfo, List<HRegionInfo>> server :
