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HDFS-2491. TestBalancer can fail when datanode utilization and avgUtilization is exactly same. Contributed by Uma Maheswara Rao G. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1187837 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Konstantin Shvachko 2011-10-23 00:35:55 +00:00
parent 977d7cc5b9
commit 7dd869c2a9
2 changed files with 4 additions and 1 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -1762,6 +1762,9 @@ Release 0.22.0 - Unreleased
HDFS-2012. Balancer incorrectly treats nodes whose utilization equals HDFS-2012. Balancer incorrectly treats nodes whose utilization equals
avgUtilization. (Uma Maheswara Rao G via shv) avgUtilization. (Uma Maheswara Rao G via shv)
HDFS-2491. TestBalancer can fail when datanode utilization and
avgUtilization is exactly same. (Uma Maheswara Rao G via shv)
Release 0.21.1 - Unreleased Release 0.21.1 - Unreleased
HDFS-1466. TestFcHdfsSymlink relies on /tmp/test not existing. (eli) HDFS-1466. TestFcHdfsSymlink relies on /tmp/test not existing. (eli)

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
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@ -823,7 +823,7 @@ public class Balancer {
cluster.add(datanode); cluster.add(datanode);
BalancerDatanode datanodeS; BalancerDatanode datanodeS;
final double avg = policy.getAvgUtilization(); final double avg = policy.getAvgUtilization();
if (policy.getUtilization(datanode) > avg) { if (policy.getUtilization(datanode) >= avg) {
datanodeS = new Source(datanode, policy, threshold); datanodeS = new Source(datanode, policy, threshold);
if (isAboveAvgUtilized(datanodeS)) { if (isAboveAvgUtilized(datanodeS)) {
this.aboveAvgUtilizedDatanodes.add((Source)datanodeS); this.aboveAvgUtilizedDatanodes.add((Source)datanodeS);