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From "Haohui Mai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11297) how to get all the details of live node and dead node using hadoop api in java
Date Tue, 11 Nov 2014 19:29:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14206885#comment-14206885

Haohui Mai commented on HADOOP-11297:

JIRA systems are used to track bugs.

Please redirect the questions to the hadoop-common-dev / hdfs-dev mailing lists.

> how to get all the details of live node and dead node using hadoop api in java
> ------------------------------------------------------------------------------
>                 Key: HADOOP-11297
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11297
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: sanjay gupta
> Hi all,
> I am trying to do my cluster discovery its just my learinig phase.
> But i want to get same details as we get using http port like 50070 etc.
> so i am trying to use FSNamesystem class as shown below :
> FSNamesystem f = FSNamesystem.getFSNamesystem();
> with this f obj i want call respective methods to get my cluster details buts this object
f is returing null
> can any one help in this ??
> Also i  want to use JSP Helper class in namenode pkg that also showing null pointer exception
i have tried as shown below :
> JspHelper j= new JspHelper();   
> but nothing is working i m stuck to get details abt live node and dead node running cluster
of hadoop 1.2

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