Hi Ashwanth, My scenario is not resolved by chaining jobs as in chaining : Output of one MR job is input in other MR job. Neither I can use JobControl Api as this tells Job1 to wait till Job2 is complete. In my scenario processing of each line File1 is dependent on simultaneous processing of File2.
From: ashwanth.ku...@gmail.com [mailto:ashwanth.ku...@gmail.com] On Behalf Of Ashwanth Kumar Sent: Wednesday, April 04, 2012 4:34 PM To: mapreduce-user@hadoop.apache.org Subject: Re: Calling one MR job within another MR job Have you tired using JobConf / JobClient for starting new jobs? Also refer here - http://developer.yahoo.com/hadoop/tutorial/module4.html#chaining on Job Chaining. On Wed, Apr 4, 2012 at 4:19 PM, Stuti Awasthi <stutiawas...@hcl.com<mailto:stutiawas...@hcl.com>> wrote: Hi Ashwanth, No I have not tried oozie. I want to attain this simply through Java Map Reduce jobs. Any ideas? From: ashwanth.ku...@gmail.com<mailto:ashwanth.ku...@gmail.com> [mailto:ashwanth.ku...@gmail.com<mailto:ashwanth.ku...@gmail.com>] On Behalf Of Ashwanth Kumar Sent: Wednesday, April 04, 2012 4:13 PM To: mapreduce-user@hadoop.apache.org<mailto:mapreduce-user@hadoop.apache.org> Subject: Re: Calling one MR job within another MR job Have you tired using Oozie < http://incubator.apache.org/oozie/ >? On Wed, Apr 4, 2012 at 4:04 PM, Stuti Awasthi <stutiawas...@hcl.com<mailto:stutiawas...@hcl.com>> wrote: Hi all, We have a usecase in which I start with first MR1 job with input file as File1.txt, and from this job, call another MR2 job with input as File2.txt So : MRjob1{ Map(){ MRJob2(File2.txt) } } MRJob2{ Processing.... } My queries are is this kind of approach is possible and how much are the implications from the performance perspective. Regards, Stuti Awasthi HCL Comnet Systems and Services Ltd F-8/9 Basement, Sec-3,Noida. ________________________________ ::DISCLAIMER:: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. ----------------------------------------------------------------------------------------------------------------------- -- Ashwanth Kumar / ashwanthkumar.in<http://ashwanthkumar.in/> -- Ashwanth Kumar / ashwanthkumar.in<http://ashwanthkumar.in/>
