FAQ
Hi all,

Whats the difference between the Job classes present in

o.a.h.mapred.jobcontrol and o.a.h.mapreduce ..

Both have different types of constructors , different functions etc..

Which one should we use in out MR programs..

Thanks

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  • Amandeep Khurana at Oct 3, 2009 at 8:53 pm
    The mapred package was prevalent till the 0.19 versions.. From 0.20 onwards,
    we are using the mapreduce package. mapred is deprecated in 0.20 and will be
    phased out in the future releases.. So, use the mapreduce package...

    -ak


    Amandeep Khurana
    Computer Science Graduate Student
    University of California, Santa Cruz

    On Sat, Oct 3, 2009 at 11:03 AM, bharath vissapragada wrote:

    Hi all,

    Whats the difference between the Job classes present in

    o.a.h.mapred.jobcontrol and o.a.h.mapreduce ..

    Both have different types of constructors , different functions etc..

    Which one should we use in out MR programs..

    Thanks
  • Bharath v at Oct 4, 2009 at 4:23 am
    Amandeep ,

    Thanks for your reply , but i can't find functions such as
    "addDependantJob()" etc in mapreduce package,
    They are present in mapred.jobcontrol.Job , Are they removed or replaced by
    some other functions in 0.20.0

    Thanks
    bharath.v
    On Sun, Oct 4, 2009 at 2:22 AM, Amandeep Khurana wrote:

    The mapred package was prevalent till the 0.19 versions.. From 0.20
    onwards,
    we are using the mapreduce package. mapred is deprecated in 0.20 and will
    be
    phased out in the future releases.. So, use the mapreduce package...

    -ak


    Amandeep Khurana
    Computer Science Graduate Student
    University of California, Santa Cruz


    On Sat, Oct 3, 2009 at 11:03 AM, bharath vissapragada <
    bharat_v@students.iiit.ac.in> wrote:
    Hi all,

    Whats the difference between the Job classes present in

    o.a.h.mapred.jobcontrol and o.a.h.mapreduce ..

    Both have different types of constructors , different functions etc..

    Which one should we use in out MR programs..

    Thanks
  • Amandeep Khurana at Oct 4, 2009 at 7:44 am
    Yes there are changes in the api. I'm not sure what's the equivalent
    function in this particular case. If you can't find anything, you can
    use the mapred package. It'll work fine as of now...
    On 10/3/09, bharath v wrote:
    Amandeep ,

    Thanks for your reply , but i can't find functions such as
    "addDependantJob()" etc in mapreduce package,
    They are present in mapred.jobcontrol.Job , Are they removed or replaced by
    some other functions in 0.20.0

    Thanks
    bharath.v
    On Sun, Oct 4, 2009 at 2:22 AM, Amandeep Khurana wrote:

    The mapred package was prevalent till the 0.19 versions.. From 0.20
    onwards,
    we are using the mapreduce package. mapred is deprecated in 0.20 and will
    be
    phased out in the future releases.. So, use the mapreduce package...

    -ak


    Amandeep Khurana
    Computer Science Graduate Student
    University of California, Santa Cruz


    On Sat, Oct 3, 2009 at 11:03 AM, bharath vissapragada <
    bharat_v@students.iiit.ac.in> wrote:
    Hi all,

    Whats the difference between the Job classes present in

    o.a.h.mapred.jobcontrol and o.a.h.mapreduce ..

    Both have different types of constructors , different functions etc..

    Which one should we use in out MR programs..

    Thanks

    --


    Amandeep Khurana
    Computer Science Graduate Student
    University of California, Santa Cruz
  • Amareshwari Sriramadasu at Oct 5, 2009 at 8:21 am
    o.a.h.mapred.jobcontrol.Job and mapreduce.Job are two different classes.
    o.a.h.mapred.jobcontrol.Job is deprecated and corresponding new api is
    available in branch 0.21 @ o.a.h.mapreduce.lib.jobcontrol.ControlledJob.

    Thanks
    Amareshwari
    Amandeep Khurana wrote:
    Yes there are changes in the api. I'm not sure what's the equivalent
    function in this particular case. If you can't find anything, you can
    use the mapred package. It'll work fine as of now...
    On 10/3/09, bharath v wrote:

    Amandeep ,

    Thanks for your reply , but i can't find functions such as
    "addDependantJob()" etc in mapreduce package,
    They are present in mapred.jobcontrol.Job , Are they removed or replaced by
    some other functions in 0.20.0

    Thanks
    bharath.v

    On Sun, Oct 4, 2009 at 2:22 AM, Amandeep Khurana wrote:

    The mapred package was prevalent till the 0.19 versions.. From 0.20
    onwards,
    we are using the mapreduce package. mapred is deprecated in 0.20 and will
    be
    phased out in the future releases.. So, use the mapreduce package...

    -ak


    Amandeep Khurana
    Computer Science Graduate Student
    University of California, Santa Cruz


    On Sat, Oct 3, 2009 at 11:03 AM, bharath vissapragada <
    bharat_v@students.iiit.ac.in> wrote:

    Hi all,

    Whats the difference between the Job classes present in

    o.a.h.mapred.jobcontrol and o.a.h.mapreduce ..

    Both have different types of constructors , different functions etc..

    Which one should we use in out MR programs..

    Thanks

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