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From "kevy liu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11871) Parameter Usage Error
Date Tue, 23 May 2017 09:42:04 GMT
kevy liu created HDFS-11871:

             Summary:  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
            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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