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From: Mohammad Tariq <dontariq@gmail.com>
Date: Thu, 20 Jun 2013 04:32:10 +0530
Message-ID: 
 <CAMVC6RMSyi_UwP6hz5-YxUd1Nvi9tzBQTPmwMb4msjjx3M930g@mail.gmail.com>
Subject: Re: New to hive.
To: user <user@hive.apache.org>
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Hello ma'am,

      Hive queries are parsed using ANTLR <http://www.antlr.org/> and and
are converted into corresponding MR jobs(actually a lot of things happen
under the hood). I had answered a similar
question<http://stackoverflow.com/questions/17090022/hive-query-control-flow/17095756?noredirect=1#comment24873979_17095756>few
days ago on SO, you might find it helpful. But I would suggest you to
go through the original
paper<http://cs.brown.edu/courses/cs227/papers/hive.pdf>which explains
all these things in proper detail. I would also recommend
you to go through the book "Programming Hive". It's really nice.

HTH

Warm Regards,
Tariq
cloudfront.blogspot.com


On Thu, Jun 20, 2013 at 4:24 AM, Bharati <bharati.adkar@mparallelo.com>wrote:

> Hi Folks,
>
> I am new to hive and need information, tutorials etc that you can point
> to. I have installed hive to work with MySQL.
>
>  I can run queries. Now I would like to understand how the map and reduce
> classes are created and how I can look at the data for the map job and map
> class the hive query generates.  Also is there a way to create custom map
> classes.
> I would appreciate if anyone can help me get started.
>
> Thanks,
> Bharati
>
> Sent from my iPad
> Fortigate Filtered
>
>

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<div dir=3D"ltr">Hello ma&#39;am,<div><br></div><div style>=A0 =A0 =A0 Hive=
 queries are parsed using <a href=3D"http://www.antlr.org/">ANTLR</a>=A0and=
 and are converted into corresponding MR jobs(actually a lot of things happ=
en under the hood). I had answered a similar <a href=3D"http://stackoverflo=
w.com/questions/17090022/hive-query-control-flow/17095756?noredirect=3D1#co=
mment24873979_17095756">question</a> few days ago on SO, you might find it =
helpful. But I would suggest you to go through the original <a href=3D"http=
://cs.brown.edu/courses/cs227/papers/hive.pdf">paper</a> which explains all=
 these things in proper detail. I would also recommend you to go through th=
e book &quot;Programming Hive&quot;. It&#39;s really nice.</div>

<div style><br></div><div style>HTH</div></div><div class=3D"gmail_extra"><=
br clear=3D"all"><div><div dir=3D"ltr">Warm Regards,<div>Tariq</div><div><a=
 href=3D"http://cloudfront.blogspot.com" target=3D"_blank">cloudfront.blogs=
pot.com</a><br>

</div></div></div>
<br><br><div class=3D"gmail_quote">On Thu, Jun 20, 2013 at 4:24 AM, Bharati=
 <span dir=3D"ltr">&lt;<a href=3D"mailto:bharati.adkar@mparallelo.com" targ=
et=3D"_blank">bharati.adkar@mparallelo.com</a>&gt;</span> wrote:<br><blockq=
uote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex">

Hi Folks,<br>
<br>
I am new to hive and need information, tutorials etc that you can point to.=
 I have installed hive to work with MySQL.<br>
<br>
=A0I can run queries. Now I would like to understand how the map and reduce=
 classes are created and how I can look at the data for the map job and map=
 class the hive query generates. =A0Also is there a way to create custom ma=
p classes.<br>


I would appreciate if anyone can help me get started.<br>
<br>
Thanks,<br>
Bharati<br>
<br>
Sent from my iPad<br>Fortigate Filtered<br>
<br></blockquote></div><br></div>

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