David Wang created HDFS-10765:
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Summary: Log a messages if finalize metadata hasn't been done, but
customer kicked off HDFS Balancer
Key: HDFS-10765
URL: https://issues.apache.org/jira/browse/HDFS-10765
Project: Hadoop HDFS
Issue Type: Improvement
Components: balancer & mover
Reporter: David Wang
-- The finalize metadata hasn't been done yet, but there is no obvious message
to inform that if started Balancer. Currently its just responding -7. Below is
the logs.
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2016-06-21 13:57:26,130 INFO [main] balancer.Balancer
(Balancer.java:logUtilizationCollection(362)) - 1 over-utilized:
[10.10.120.32:50010:DISK]
2016-06-21 13:57:26,131 INFO [main] balancer.Balancer
(Balancer.java:logUtilizationCollection(362)) - 5 underutilized:
[10.10.120.93:50010:DISK, 10.10.120.97:50010:DISK, 10.10.120.95:50010:DISK,
10.10.120.96:50010:DISK, 10.10.120.94:50010:DISK]
2016-06-21 13:57:26,133 INFO [main] balancer.Balancer
(Balancer.java:runOneIteration(526)) - Need to move 1.09 TB to make the cluster
balanced.
Jun 21, 2016 1:57:26 PM 0 0 B 1.09 TB -1 B
Jun 21, 2016 1:57:26 PM Balancing took 1.519 seconds
-- Copied the comments here.
// Should not run the balancer during an unfinalized upgrade, since moved
// blocks are not deleted on the source datanode.
http://opengrok.sjc.cloudera.com:8080/source/xref/CDH-5.5.1/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java#530
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