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Date: Wed, 29 May 2013 16:30:19 +0200
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 <CAJV_UYd-qReNO_Maj=20qZ3D4WZT654itxXrnfww-g63HTep3A@mail.gmail.com>
Subject: Re: data clean up problem
From: cem <cayiroglu@gmail.com>
To: user@cassandra.apache.org
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Thanks for the answers!

Cem


On Wed, May 29, 2013 at 1:26 AM, Robert Coli <rcoli@eventbrite.com> wrote:

> On Tue, May 28, 2013 at 2:38 PM, Bryan Talbot <btalbot@aeriagames.com>
> wrote:
> > I think what you're asking for (efficient removal of TTL'd write-once
> data)
> > is already in the works but not until 2.0 it seems.
>
> If your entire dataset in a keyspace or column family is deleted every
> [small time period], then maybe use TRUNCATE?
>
> Two caveats :
>
> 1) https://issues.apache.org/jira/browse/CASSANDRA-4655 - TRUNCATE
> will leave undelivered hints untouched until 1.2.6
> 2) TRUNCATE will create a snapshot unless you (unsafely!!!!!!!
> danger!!!!!!!!) disable this feature [1]
>
> Alternately, perhaps a datastore with immutable data files is not for you?
> :D
>
> =Rob
> [1] https://issues.apache.org/jira/browse/CASSANDRA-3710
>

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<div dir=3D"ltr">Thanks for the answers!<div><br></div><div>Cem<br><div><br=
></div></div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_q=
uote">On Wed, May 29, 2013 at 1:26 AM, Robert Coli <span dir=3D"ltr">&lt;<a=
 href=3D"mailto:rcoli@eventbrite.com" target=3D"_blank">rcoli@eventbrite.co=
m</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 class=3D"im">On Tue, May 28, 2013 at 2:=
38 PM, Bryan Talbot &lt;<a href=3D"mailto:btalbot@aeriagames.com">btalbot@a=
eriagames.com</a>&gt; wrote:<br>

&gt; I think what you&#39;re asking for (efficient removal of TTL&#39;d wri=
te-once data)<br>
&gt; is already in the works but not until 2.0 it seems.<br>
<br>
</div>If your entire dataset in a keyspace or column family is deleted ever=
y<br>
[small time period], then maybe use TRUNCATE?<br>
<br>
Two caveats :<br>
<br>
1) <a href=3D"https://issues.apache.org/jira/browse/CASSANDRA-4655" target=
=3D"_blank">https://issues.apache.org/jira/browse/CASSANDRA-4655</a> - TRUN=
CATE<br>
will leave undelivered hints untouched until 1.2.6<br>
2) TRUNCATE will create a snapshot unless you (unsafely!!!!!!!<br>
danger!!!!!!!!) disable this feature [1]<br>
<br>
Alternately, perhaps a datastore with immutable data files is not for you? =
:D<br>
<br>
=3DRob<br>
[1] <a href=3D"https://issues.apache.org/jira/browse/CASSANDRA-3710" target=
=3D"_blank">https://issues.apache.org/jira/browse/CASSANDRA-3710</a><br>
</blockquote></div><br></div>

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