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Date: Thu, 3 May 2012 12:34:50 +0000 (UTC)
From: "xieguiming (JIRA)" <jira@apache.org>
To: common-dev@hadoop.apache.org
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Subject: [jira] [Created] (HADOOP-8351) Add exclude/include file , need
 restart NN or RM.
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xieguiming created HADOOP-8351:
----------------------------------

             Summary: Add exclude/include file , need restart NN or RM.
                 Key: HADOOP-8351
                 URL: https://issues.apache.org/jira/browse/HADOOP-8351
             Project: Hadoop Common
          Issue Type: Bug
          Components: util
         Environment: suse
            Reporter: xieguiming


"yarn.resourcemanager.nodes.include-path" default value is "", if we need add one include file. and we must restart the RM. 
I suggest that adding one include or exclude file, no need restart the RM. only execute the refresh command.
NN is the same.

Modify the HostsFileReader class:

public HostsFileReader(String inFile, 
                         String exFile)

to

 public HostsFileReader(Configuration conf, 
                         String NODES_INCLUDE_FILE_PATH,String DEFAULT_NODES_INCLUDE_FILE_PATH,
                        String NODES_EXCLUDE_FILE_PATH,String DEFAULT_NODES_EXCLUDE_FILE_PATH)


and thus, we can read the config file dynamic. and no need to restart the NM/NN.


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