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From jerrro <jer...@gmail.com>
Subject Re: failed map tasks
Date Thu, 03 Jul 2008 14:56:15 GMT

I am actually more interested in _theoretically_ what could happen to a map
tasks to fail or to take longer...
Don't have a specific case. Thanks, Jerr

Amar Kamat wrote:
> jerrro wrote:
>> Hello,
>> I was wondering - could someone tell me what are the reasons that I could
>> get failure with certain map tasks on a node? 
> Well, that depends on the kind of errors you are seeing. Could you plz 
> post the logs/error messages?
> Amar
>> Any idea that comes to mind
>> would work (it does not happen because my program aborts).
>> Also, what could cause with hadoop for a map task to take longer
>> (although
>> data is the same for all maps) to finish than the other tasks?
> What Hadoop version are you using? What is the average runtime of the 
> maps? How much difference are you seeing? Are all the nodes same in 
> terms of config?
>> Thanks
>> Jerr

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