hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Abhishek <abhishek.dod...@gmail.com>
Subject Re: Map works well, but Redue failed
Date Sat, 16 Jun 2012 13:18:07 GMT
Hi raj,

I think you should increase the reducer worker threads,to fetch the map output.

Regards 
Abhishek.

Sent from my iPhone

On Jun 15, 2012, at 9:42 PM, Raj Vishwanathan <rajvish@yahoo.com> wrote:

> Most probably you have a network problem. Check your hostname and IP address mapping
> 
> 
> 
>> ________________________________
>> From: Yongwei Xing <jdxyw2004@gmail.com>
>> To: common-user@hadoop.apache.org 
>> Sent: Thursday, June 14, 2012 10:15 AM
>> Subject: Map works well, but Redue failed
>> 
>> Hi all
>> 
>> I run a simple sort program, however, I meet such error like below.
>> 
>> 12/06/15 01:13:17 WARN mapred.JobClient: Error reading task outputServer
>> returned HTTP response code: 403 for URL:
>> http://192.168.1.106:50060/tasklog?plaintext=true&attemptid=attempt_201206150102_0002_m_000001_1&filter=stdout
>> 12/06/15 01:13:18 WARN mapred.JobClient: Error reading task outputServer
>> returned HTTP response code: 403 for URL:
>> http://192.168.1.106:50060/tasklog?plaintext=true&attemptid=attempt_201206150102_0002_m_000001_1&filter=stderr
>> 12/06/15 01:13:20 INFO mapred.JobClient:  map 50% reduce 0%
>> 12/06/15 01:13:23 INFO mapred.JobClient:  map 100% reduce 0%
>> 12/06/15 01:14:19 INFO mapred.JobClient: Task Id :
>> attempt_201206150102_0002_m_000000_2, Status : FAILED
>> Too many fetch-failures
>> 12/06/15 01:14:20 WARN mapred.JobClient: Error reading task outputServer
>> returned HTTP response code: 403 for URL:
>> http://192.168.1.106:50060/tasklog?plaintext=true&attemptid=attempt_201206150102_0002_m_000000_2&filter=stdout
>> 
>> Does anyone know what's the reason and how to resolve it?
>> 
>> Best Regards,
>> 
>> -- 
>> Welcome to my ET Blog http://www.jdxyw.com
>> 
>> 

Mime
View raw message