Yes. They can be used inside a mapper also.
See org.apache.hadoop.mapred.lib.TestMultipleOutputs.java or
org.apache.hadoop.mapreduce.lib.output.TestMRMultiplteOutputs for some sample
code.
Thanks
Amareshwari
On 6/9/10 5:57 AM, "Torsten Curdt" wrote:
Can the MultipleOutputs also be used insid
Can the MultipleOutputs also be used inside a mapper?
So basically I pipe data into different reducers from the mapper.
Of course I could do two separate jobs but that would very inefficient
as I would have to go/read through all the data twice.
cheers
--
Torsten
On Tue, Jun 8, 2010 at 06:22, A
Hi Giridhar,
Can you share your code somewhere?
Nick Jones
Sent by radiation.
On Jun 8, 2010, at 7:21 AM, "Giridhar Addepalli" > wrote:
Hi Sonal,
I am using Hadoop 0.20.2. Is this okay ?
Thanks for the suggestion , will look at the hiho framework.
Thanks,
Giridhar.
-Original Message--
Hi Sonal,
I am using Hadoop 0.20.2. Is this okay ?
Thanks for the suggestion , will look at the hiho framework.
Thanks,
Giridhar.
-Original Message-
From: Sonal Goyal [mailto:sonalgoy...@gmail.com]
Sent: Tuesday, June 08, 2010 5:48 PM
To: mapreduce-user@hadoop.apache.org
Subject: Re: P
Hi Giridhar,
Which version of Hadoop are you using?
If you want, you can also load data to MySQL using the hiho framework at
http://code.google.com/p/hiho/
Thanks and Regards,
Sonal
www.meghsoft.com
http://in.linkedin.com/in/sonalgoyal
On Tue, Jun 8, 2010 at 3:02 PM, Giridhar Addepalli
wrote
Hi,
I am trying to write output to MYSQL DB,
I am getting following error
java.io.IOException
at
org.apache.hadoop.mapreduce.lib.db.DBOutputFormat.getRecordWriter(DBOutp
utFormat.java:180)
at
org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.j
