meng gong created HDFS-3746:
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Summary: Invalid counter tag in HDFS balancer which lead to
infinite loop
Key: HDFS-3746
URL: https://issues.apache.org/jira/browse/HDFS-3746
Project: Hadoop HDFS
Issue Type: Bug
Components: balancer
Affects Versions: 2.1.0-alpha, 3.0.0
Reporter: meng gong
Fix For: 2.1.0-alpha, 3.0.0
Everytime banlancer try to move a block cross the rack. For every
NameNodeConnector it will instance a new banlancer. The tag
notChangedIterations is reseted to 0. Then it won't reach 5 and exit the thread
for not moved in 5 consecutive iterations. This lead to a infinite loop
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