Kidd53685368 opened a new pull request, #5474:
URL: https://github.com/apache/hadoop/pull/5474
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### Description of PR
This is a follow-up of
[HDFS-16179](https://issues.apache.org/jira/browse/HDFS-16179).When the EC
internal block is moved by the balancer, it will trigger
chooseExcessRedundancyStriped( ), and the parameter delNodeHint is not null.So
the nonExcess list will be modified in processChosenExcessRedundancy( ),
normally the size of nonExcess will be reduced to the expected EC group size,
that's why the annoying log "excess types chose ... is empty." will be printed.
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