Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@cassandra.apache.org
Received-SPF: pass (nike.apache.org: domain of kohlisankalp@gmail.com
 designates 209.85.216.180 as permitted sender)
MIME-Version: 1.0
In-Reply-To: 
 <CAK0tFt7MBiaUbRRJ=J+nprgSPYpz-YEAv2Zng26UkAPi_qcTBw@mail.gmail.com>
References: 
 <CAADOH5aAj_Qu4A=9uA=PhtQfChHBzG0ANgBGuBYwY6F8fe93PA@mail.gmail.com>
 <CAK0tFt7MBiaUbRRJ=J+nprgSPYpz-YEAv2Zng26UkAPi_qcTBw@mail.gmail.com>
From: sankalp kohli <kohlisankalp@gmail.com>
Date: Tue, 25 Jun 2013 21:58:03 -0400
Message-ID: 
 <CAEPxca2jh77oOVywbUXjHu5K6TK-5ShMmS=7FpkxVCqY2nLBsA@mail.gmail.com>
Subject: Re: what happen if coordinator node fails during write
To: user@cassandra.apache.org
Content-Type: multipart/alternative; boundary=14dae9c093de44ee0c04e004fc0f

--14dae9c093de44ee0c04e004fc0f
Content-Type: text/plain; charset=ISO-8859-1

Read this
http://www.datastax.com/dev/blog/atomic-batches-in-cassandra-1-2


On Tue, Jun 25, 2013 at 8:45 PM, Andrey Ilinykh <ailinykh@gmail.com> wrote:

> It depends on cassandra version. As far as I know in 1.2 coordinator logs
> request before it updates replicas. If it fails it will replay log on
> startup.
> In 1.1 you may have inconsistant state, because only part of your request
> is propagated to replicas.
>
> Thank you,
>   Andrey
>
>
> On Tue, Jun 25, 2013 at 5:11 PM, Jiaan Zeng <jiaan@bloomreach.com> wrote:
>
>> Hi there,
>>
>> I am writing data to Cassandra by thrift client (not hector) and
>> wonder what happen if the coordinator node fails. The same question
>> applies for bulk loader which uses gossip protocol instead of thrift
>> protocol. In my understanding, the HintedHandoff only takes care of
>> the replica node fails.
>>
>> Thanks.
>>
>> --
>> Regards,
>> Jiaan
>>
>
>

--14dae9c093de44ee0c04e004fc0f
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Read this=A0<div><a href=3D"http://www.datastax.com/dev/bl=
og/atomic-batches-in-cassandra-1-2">http://www.datastax.com/dev/blog/atomic=
-batches-in-cassandra-1-2</a><br></div></div><div class=3D"gmail_extra"><br=
><br>

<div class=3D"gmail_quote">On Tue, Jun 25, 2013 at 8:45 PM, Andrey Ilinykh =
<span dir=3D"ltr">&lt;<a href=3D"mailto:ailinykh@gmail.com" target=3D"_blan=
k">ailinykh@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_q=
uote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1e=
x">

<div dir=3D"ltr">It depends on cassandra version. As far as I know in 1.2 c=
oordinator logs request before it updates replicas. If it fails it will rep=
lay log on startup.<div>In 1.1 you may have inconsistant state, because onl=
y part of your request is=A0propagated=A0to replicas.</div>


<div><br></div><div>Thank you,</div><div>=A0 Andrey</div></div><div class=
=3D"HOEnZb"><div class=3D"h5"><div class=3D"gmail_extra"><br><br><div class=
=3D"gmail_quote">On Tue, Jun 25, 2013 at 5:11 PM, Jiaan Zeng <span dir=3D"l=
tr">&lt;<a href=3D"mailto:jiaan@bloomreach.com" target=3D"_blank">jiaan@blo=
omreach.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">Hi there,<br>
<br>
I am writing data to Cassandra by thrift client (not hector) and<br>
wonder what happen if the coordinator node fails. The same question<br>
applies for bulk loader which uses gossip protocol instead of thrift<br>
protocol. In my understanding, the HintedHandoff only takes care of<br>
the replica node fails.<br>
<br>
Thanks.<br>
<br>
--<br>
Regards,<br>
Jiaan<br>
</blockquote></div><br></div>
</div></div></blockquote></div><br></div>

--14dae9c093de44ee0c04e004fc0f--