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From: Rahul Bhattacharjee <rahul.rec.dgp@gmail.com>
Date: Wed, 22 May 2013 09:38:05 +0530
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 <CAO7hTbPCvPq-7awPQ+Gd0+Ve2_G-69BuHME0P0eLAtTpQa1pAw@mail.gmail.com>
Subject: Re: Low latency data access Vs High throughput of data
To: "user@hadoop.apache.org" <user@hadoop.apache.org>
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Waoh! I know what latency is and what throughput is , but when someone asks
me this question , I was never able to answer it to me satisfaction. Now I
can.

Thanks a lot!


On Wed, May 22, 2013 at 12:21 AM, Jens Scheidtmann <
jens.scheidtmann@gmail.com> wrote:

> Hi Chris, hi Raj,
>
> in relational databases there are different targets for the optimizer:
> Return the first record as fast as possible, even if reading through the
> whole dataset takes longer (low latency)
> Return all rows as fast as possible, even if reading the first record may
> take a longer time (highest throughput)
>
> Best regards,
>
> Jens
>

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:courier =
new,monospace;color:rgb(0,0,0)">Waoh! I know what latency is and what throu=
ghput is , but when someone asks me this question , I was never able to ans=
wer it to me satisfaction. Now I can.<br>

<br>Thanks a lot!<br></div></div><div class=3D"gmail_extra"><br><br><div cl=
ass=3D"gmail_quote">On Wed, May 22, 2013 at 12:21 AM, Jens Scheidtmann <spa=
n dir=3D"ltr">&lt;<a href=3D"mailto:jens.scheidtmann@gmail.com" target=3D"_=
blank">jens.scheidtmann@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div><div><div><div><div>Hi=
 Chris, hi Raj,<br><br></div>in relational databases there are different ta=
rgets for the optimizer: <br>

</div>Return the first record as fast as possible, even if reading through =
the whole dataset takes longer (low latency)<br>
</div>Return all rows as fast as possible, even if reading the first record=
 may take a longer time (highest throughput) <br><br></div>Best regards,<br=
><br></div>Jens<br><div><div></div></div></div>
</blockquote></div><br></div>

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