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From "Vinay Kumar Thota (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1713) Utilities for system tests specific.
Date Mon, 10 May 2010 06:13:48 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Vinay Kumar Thota updated MAPREDUCE-1713:

    Attachment: 1713-ydist-security.patch

Looking almost good. However, AbstractDaemonCluster.java should import MRCluster class. It's
a wrong dependency.
[Vinay] : Removed the unused MRCluster import.

Is it possible that chkDaemonStart.get(ind) returns null and then calling join() on it will
produce NPE?
[Vinay]: I don't think so it may return the null value because we are creating the thread
instance everytime for each daemon and adding then into the list. Even run method is handling
the exception, so in my opinion there is no possibility of getting NPE.

why clusterManager is used in some places and isn't in others (on more than one occasion)?

[Vinay]: start() and stop() methods implemented in AbstractDamenonCluster class itself and
those two methods are internally calling the clusterManager. So, I am using those two methods
directly instead of calling them by using clusterManager.However, the other two methods are
available in ClusterProcessManager class, so I am calling them by using clusterManager instance.

warning message needs to be added if wait was unsuccessful.
[Vinay] : For waiting using the utils method.So,that method might be handling the warning
message for unsuccessful waits.

shorter form of for loop can be used perhaps for waitForClusterToStop()  and waitForClusterToStart().
Instead of 
[Vinay] : Addressed the code as per your comment.

incorrect JavaDocs 
[Vinay] : Addressed all the incorrect java docs in the code.

> Utilities for system tests specific.
> ------------------------------------
>                 Key: MAPREDUCE-1713
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1713
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>          Components: test
>            Reporter: Vinay Kumar Thota
>            Assignee: Vinay Kumar Thota
>         Attachments: 1713-ydist-security.patch, 1713-ydist-security.patch, 1713-ydist-security.patch,
systemtestutils_MR1713.patch, utilsforsystemtest_1713.patch
> 1.  A method for restarting  the daemon with new configuration.
>       public static  void restartCluster(Hashtable<String,Long> props, String confFile)
throws Exception;
> 2.  A method for resetting the daemon with default configuration.
>       public void resetCluster() throws Exception;
> 3.  A method for waiting until daemon to stop.
>       public  void waitForClusterToStop() throws Exception;
> 4.  A method for waiting until daemon to start.
>       public  void waitForClusterToStart() throws Exception;
> 5.  A method for checking the job whether it has started or not.
>       public boolean isJobStarted(JobID id) throws IOException;
> 6.  A method for checking the task whether it has started or not.
>       public boolean isTaskStarted(TaskInfo taskInfo) throws IOException;

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