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From Sandeep Dhawan <dsand...@hcl.in>
Subject Re: File Modification timestamp
Date Wed, 31 Dec 2008 07:35:32 GMT

Hi Dhruba,

The file is being closed properly but the timestamp does not get modified.
The modification timestamp
still shows the file creation time. 
I am creating a new file and writing data into this file.

Thanks,
Sandeep


Dhruba Borthakur-2 wrote:
> 
> I believe that file modification times are updated only when the file is
> closed. Are you "appending" to a preexisting file?
> 
> thanks,
> dhruba
> 
> 
> On Tue, Dec 30, 2008 at 3:14 AM, Sandeep Dhawan <dsandeep@hcl.in> wrote:
> 
>>
>> Hi,
>>
>> I have a application which creates a simple text file on hdfs. There is a
>> second application which processes this file. The second application
>> picks
>> up the file for processing only when the file has not been modified for
>> 10
>> mins. In this way, the second application is sure that this file is ready
>> for processing.
>>
>> But, what is happening is that the Hadoop is not updating the
>> modification
>> timestamp of the file even when the file is being written into. The
>> modification timestamp of the file is same as the timestamp when the file
>> was created.
>>
>> I am using hadoop 0.18.2.
>>
>> 1. Is this a bug in hadoop or is this way hadoop works
>> 2. Is there way by which I can programmitically set the modification
>> timestamp of the file
>>
>> Thanks,
>> Sandeep
>>
>> --
>> View this message in context:
>> http://www.nabble.com/File-Modification-timestamp-tp21215824p21215824.html
>> Sent from the Hadoop core-user mailing list archive at Nabble.com.
>>
>>
> 
> 

-- 
View this message in context: http://www.nabble.com/File-Modification-timestamp-tp21215824p21228299.html
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