FAQ
Hi,



While executing a query from hive ,a Job will get created.



Please let me know the Mapping Between Hive Query And the Jobs that are
created for that query. ?Is it One-One ?



Thanks

sandeep





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  • Sreekanth Ramakrishnan at Jan 3, 2011 at 9:12 am
    Hi Sandeep,

    If you try running the explain query it will show you number of stages which a query will use. Each stage will correspond to a MapReduce job. Also, there are conditional tasks, which points to one set of stage will be executed in lieu of the other.

    Please take a look at the following wiki link which explains it futher.

    http://wiki.apache.org/hadoop/Hive/LanguageManual/Explain



    On 1/3/11 2:36 PM, "sandeep" wrote:


    Hi,

    While executing a query from hive ,a Job will get created.

    Please let me know the Mapping Between Hive Query And the Jobs that are created for that query. ?Is it One-One ?

    Thanks
    sandeep


    ***************************************************************************************
    This e-mail and attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient's) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!



    --
    Sreekanth Ramakrishnan
  • Sandeep at Jan 3, 2011 at 9:43 am
    Thank you sreekanth .

    ****************************************************************************
    ***********
    This e-mail and attachments contain confidential information from HUAWEI,
    which is intended only for the person or entity whose address is listed
    above. Any use of the information contained herein in any way (including,
    but not limited to, total or partial disclosure, reproduction, or
    dissemination) by persons other than the intended recipient's) is
    prohibited. If you receive this e-mail in error, please notify the sender by
    phone or email immediately and delete it!

    _____

    From: Sreekanth Ramakrishnan
    Sent: Monday, January 03, 2011 2:42 PM
    To: user@hive.apache.org; sandeep
    Subject: Re: Regarding Number of Jobs Created for One Hive-Query



    Hi Sandeep,

    If you try running the explain query it will show you number of stages which
    a query will use. Each stage will correspond to a MapReduce job. Also,
    there are conditional tasks, which points to one set of stage will be
    executed in lieu of the other.

    Please take a look at the following wiki link which explains it futher.

    http://wiki.apache.org/hadoop/Hive/LanguageManual/Explain



    On 1/3/11 2:36 PM, "sandeep" wrote:


    Hi,

    While executing a query from hive ,a Job will get created.

    Please let me know the Mapping Between Hive Query And the Jobs that are
    created for that query. ?Is it One-One ?

    Thanks
    sandeep


    ****************************************************************************
    ***********
    This e-mail and attachments contain confidential information from HUAWEI,
    which is intended only for the person or entity whose address is listed
    above. Any use of the information contained herein in any way (including,
    but not limited to, total or partial disclosure, reproduction, or
    dissemination) by persons other than the intended recipient's) is
    prohibited. If you receive this e-mail in error, please notify the sender by
    phone or email immediately and delete it!




    --
    Sreekanth Ramakrishnan

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postedJan 3, '11 at 9:07a
activeJan 3, '11 at 9:43a
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