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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-116) RM is missing ability to add include/exclude files without a restart
Date Tue, 02 Oct 2012 12:43:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13467666#comment-13467666
] 

Hudson commented on YARN-116:
-----------------------------

Integrated in Hadoop-Hdfs-0.23-Build #392 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/392/])
    svn merge -c 1391912 FIXES: YARN-116. Add the ability to change the RM include/exclude
file without a restart. (Contributed by xieguiming and Harsh J) (Revision 1392366)

     Result = UNSTABLE
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1392366
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/AdminService.java
* /hadoop/common/branches/branch-0.23/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/NodesListManager.java
* /hadoop/common/branches/branch-0.23/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestResourceTrackerService.java

                
> RM is missing ability to add include/exclude files without a restart
> --------------------------------------------------------------------
>
>                 Key: YARN-116
>                 URL: https://issues.apache.org/jira/browse/YARN-116
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.0.0-alpha
>            Reporter: xieguiming
>            Assignee: xieguiming
>             Fix For: 2.0.3-alpha, 0.23.5
>
>         Attachments: HADOOP-835-0.patch, HADOOP-835-1.patch, HADOOP-835.patch, YARN-116.patch
>
>
> The "yarn.resourcemanager.nodes.include-path" default value is "", if we need to add
an include file, we must currently restart the RM. 
> I suggest that for adding an include or exclude file, there should be no need to restart
the RM. We may only execute the refresh command. The HDFS NameNode already has this ability.
> Fix is to the modify HostsFileReader class instances:
> From:
> {code}
> public HostsFileReader(String inFile, 
>                          String exFile)
> {code}
> To:
> {code}
>  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)
> {code}
> And thus, we can read the config file dynamically when a {{refreshNodes}} is invoked
and therefore have no need to restart the ResourceManager.

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