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From Hemanth Yamijala <yhema...@thoughtworks.com>
Subject Re: Failed to call hadoop API
Date Thu, 29 Nov 2012 12:33:36 GMT
Hi,

Little confused about where JNI comes in here (you mentioned this in your
original email). Also, where do you want to get the information for the
hadoop job ? Is it in a program that is submitting a job, or some sort of
monitoring application that is monitoring jobs submitted to a cluster by
others ? I think some of this information will drive an answer.

FWIW, JobID.forName(job_id_as_string) would give you a handle to a JobID
tied to a job. Reference:
http://hadoop.apache.org/docs/stable/api/org/apache/hadoop/mapreduce/JobID.html

Thanks
hemanth


On Wed, Nov 28, 2012 at 6:58 AM, ugiwgh <ugiwgh@gmail.com> wrote:

>
> I want to code a program to get hadoop job information, such as jobid,
> jobname, owner, running nodes.
>
> **
>
>
> ------------------ Original ------------------
> *From: * "Mahesh Balija"<balijamahesh.mca@gmail.com>;
> *Date: * Tue, Nov 27, 2012 10:02 PM
> *To: * "user"<user@hadoop.apache.org>; **
> *Subject: * Re: Failed to call hadoop API
>
> Hi Hui,
>   JobID constructor is not a public constructor it has default visibility
> so you have to create the instance within the same package.
>  Usually you cannot create a JobID rather you can get one from the JOB
> instance by invoking getJobID().
>  If this doesnot works for you, please tell what you are trying to do?
>  Thanks,
> Mahesh Balija,
> Calsoft Labs.
> On Tue, Nov 27, 2012 at 5:37 PM, GHui <ugiwgh@gmail.com> wrote:
>
>>
>> I call the sentence "JobID id = new JobID()" of hadoop API with JNI. But
>> when my program run to this sentence, it exits. And no errors output. I
>> don't make any sense of this.
>>
>> The hadoop is hadoop-core-1.0.3.jar.
>> The Java sdk is jdk1.6.0-34.
>>
>> Any help will be appreciated.
>>
>> -GHui
>>
>
> **
>

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