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https://issues.apache.org/jira/browse/HDFS-11871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weiwei Yang resolved HDFS-11871.
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Resolution: Not A Problem
> balance include Parameter Usage Error
> -------------------------------------
>
> Key: HDFS-11871
> URL: https://issues.apache.org/jira/browse/HDFS-11871
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: balancer & mover
> Affects Versions: 2.7.3
> Reporter: kevy liu
> Assignee: Weiwei Yang
> Priority: Trivial
>
> [hadoop@bigdata-hdp-apache505 hadoop-2.7.2]$ bin/hdfs balancer -h
> Usage: hdfs balancer
> [-policy <policy>] the balancing policy: datanode or blockpool
> [-threshold <threshold>] Percentage of disk capacity
> [-exclude [-f <hosts-file> | <comma-separated list of hosts>]]
> Excludes the specified datanodes.
> [-include [-f <hosts-file> | <comma-separated list of hosts>]]
> Includes only the specified datanodes.
> [-idleiterations <idleiterations>] Number of consecutive idle
> iterations (-1 for Infinite) before exit.
> Parameter Description:
> -f <hosts-file> | <comma-separated list of hosts>
> The parse separator in the code is:
> String[] nodes = line.split("[ \t\n\f\r]+");
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