[HDFS-2491] TestBalancer can fail when datanode utilization and avgUtilization is exactly same.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.22.0, 0.23.0, 2.0.0-alpha
• Fix Version/s: 0.22.0, 0.23.0
• Target Version/s: 0.22.0
• Hadoop Flags: Reviewed
• Assignee: Uma Maheswara Rao G
• Reporter: Uma Maheswara Rao G
• Created: 22/Oct/11 05:11
• Updated: 16/Mar/15 17:49
• Resolved: 23/Oct/11 00:48

Description

Stack Trace:
junit.framework.AssertionFailedError: 127.0.0.1:60986is not an underUtilized node: utilization=22.0 avgUtilization=22.0 threshold=10.0
at org.apache.hadoop.hdfs.server.balancer.Balancer.initNodes(Balancer.java:1014)
at org.apache.hadoop.hdfs.server.balancer.Balancer.initNodes(Balancer.java:953)
at org.apache.hadoop.hdfs.server.balancer.Balancer.run(Balancer.java:1502)
at org.apache.hadoop.hdfs.server.balancer.TestBalancer.runBalancer(TestBalancer.java:247)
at org.apache.hadoop.hdfs.server.balancer.TestBalancer.test(TestBalancer.java:234)
at org.apache.hadoop.hdfs.server.balancer.TestBalancer.twoNodeTest(TestBalancer.java:312)
at org.apache.hadoop.hdfs.server.balancer.TestBalancer.__CLR2_4_39j3j5b10ou(TestBalancer.java:328)
at org.apache.hadoop.hdfs.server.balancer.TestBalancer.testBalancer0(TestBalancer.java:324)

Issue Links

• is related to: HDFS-2012 Recurring failure of TestBalancer due to incorrect treatment of nodes whose utilization equals avgUtilization.