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Date: Mon, 6 May 2013 07:22:14 +0530
Message-ID: 
 <CAKh5_nT7CDiyuQad7dQRX0CyvkuoWUMx0oorxQ_=q+txgoL+QQ@mail.gmail.com>
Subject: Re: local_quorum
From: shubham srivastava <shubham.k@gmail.com>
To: user@cassandra.apache.org
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You will get an error back . Also use RF:3 for the high availability in one
DC.


On Mon, May 6, 2013 at 7:05 AM, Kanwar Sangha <kanwar@mavenir.com> wrote:

>  Anyone ?****
>
> ** **
>
> *From:* Kanwar Sangha [mailto:kanwar@mavenir.com]
> *Sent:* 03 May 2013 08:59
> *To:* user@cassandra.apache.org
> *Subject:* local_quorum****
>
> ** **
>
> Hi =96 I have 2 data centres (DC1 and DC2) and I have local_quorum set as
> the CL for reads. Say there is a RF factor =3D 2. (so 2 copies each in DC=
).
> ****
>
> ** **
>
> If both nodes which own the data in DC1 are down and I do a read with CL
> as =93local_quorum=94 , will I get an error back to the application ? or =
will
> Cassandra do automatic routing to the other DC ?****
>
> ** **
>
> Thanks,****
>
> Kanwar****
>
> ** **
>

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<div dir=3D"ltr">You will get an error back . Also use RF:3 for the high av=
ailability in one DC.</div><div class=3D"gmail_extra"><br><br><div class=3D=
"gmail_quote">On Mon, May 6, 2013 at 7:05 AM, Kanwar Sangha <span dir=3D"lt=
r">&lt;<a href=3D"mailto:kanwar@mavenir.com" target=3D"_blank">kanwar@maven=
ir.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 lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d">Anyone ?<u></u><u></u>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1f497d"><u></u>=A0<u></u></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Kanwar S=
angha [mailto:<a href=3D"mailto:kanwar@mavenir.com" target=3D"_blank">kanwa=
r@mavenir.com</a>]
<br>
<b>Sent:</b> 03 May 2013 08:59<br>
<b>To:</b> <a href=3D"mailto:user@cassandra.apache.org" target=3D"_blank">u=
ser@cassandra.apache.org</a><br>
<b>Subject:</b> local_quorum<u></u><u></u></span></p>
</div>
</div><div><div class=3D"h5">
<p class=3D"MsoNormal"><u></u>=A0<u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Hi =96 I have 2 data centres (D=
C1 and DC2) and I have local_quorum set as the CL for reads. Say there is a=
 RF factor =3D 2. (so 2 copies each in DC).
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">If both nodes which own the dat=
a in DC1 are down and I do a read with CL as =93local_quorum=94 , will I ge=
t an error back to the application ? or will Cassandra do automatic routing=
 to the other DC ?<u></u><u></u></span></p>

<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Thanks,<u></u><u></u></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-IN">Kanwar<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-IN"><u></u>=A0<u></u></span></p>
</div></div></div>
</div>

</blockquote></div><br></div>

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