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List:       cassandra-user
Subject:    Re: Cassandra take a snapshot after a column family update
From:       Roberto Bentivoglio <roberto.bentivoglio () gmail ! com>
Date:       2011-03-31 13:43:58
Message-ID: AANLkTikxxSUdSaeqaLDfHh6xLs0h+=8un9QwLpwUzPnT () mail ! gmail ! com
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Ok, we'll do it for sure!

Thanks,
Roberto

On 31 March 2011 14:56, aaron morton <aaron@thelastpickle.com> wrote:

> Next time it happens take a note of the snapshot folder, different
> processes name the folder differently. It may help track down what created
> the snapshot.
>
> Cheers
> Aaron
>
> On 31 Mar 2011, at 01:13, Roberto Bentivoglio wrote:
>
> Hi Aaron,
> I already deleted the snapshot folder unfortunately.
> We upgraded to 0.7.4.
>
> Thanks,
> Roberto
>
> On 30 March 2011 12:57, aaron morton <aaron@thelastpickle.com> wrote:
>
>> AFAIK snapshots are taken for drop CF, drop KS and truncate CF also during
>> compaction if enabled via yaml. Cannot see anything in the code for 0.7 to
>> snapshot during CF update.
>>
>> What was the name of the snapshot folder ?
>>
>> btw it's a really good idea to upgrade to 0.7.4 if possible
>>
>> Aaron
>>
>> On 30 Mar 2011, at 20:55, Roberto Bentivoglio wrote:
>>
>> > Hi all,
>> > I've executed from cassandra-cli on a production server (0.7.0) the
>> following instruction:
>> >
>> > update column family CFName with gc_grace=0;
>> >
>> > I'm really surprise that Cassandra take a snapshots of the data for
>> every update that I executed.
>> > Is this a normal behaviour?
>> >
>> > Thanks,
>> > Roberto Bentivoglio
>>
>>
>
>

[Attachment #3 (text/html)]

<div><div>Ok, we&#39;ll do it for \
sure!</div><div><br></div><div>Thanks,</div><div>Roberto</div><br><div \
class="gmail_quote">On 31 March 2011 14:56, aaron morton <span dir="ltr">&lt;<a \
href="mailto:aaron@thelastpickle.com">aaron@thelastpickle.com</a>&gt;</span> \
wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px \
#ccc solid;padding-left:1ex;"><div style="word-wrap:break-word">Next time it happens \
take a note of the snapshot folder, different processes name the folder differently. \
It may help track down what created the snapshot. <div> \
<br></div><div>Cheers</div><div>Aaron</div><div><div></div><div \
class="h5"><div><br><div><div>On 31 Mar 2011, at 01:13, Roberto Bentivoglio \
wrote:</div><br><blockquote type="cite"><div>Hi Aaron,</div><div>I already deleted \
the snapshot folder unfortunately.</div> <div>We upgraded to \
0.7.4.</div><div><br></div><div>Thanks,</div><div>Roberto</div> <br><div \
class="gmail_quote">On 30 March 2011 12:57, aaron morton <span dir="ltr">&lt;<a \
href="mailto:aaron@thelastpickle.com" \
target="_blank">aaron@thelastpickle.com</a>&gt;</span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">

AFAIK snapshots are taken for drop CF, drop KS and truncate CF also during compaction \
if enabled via yaml. Cannot see anything in the code for 0.7 to snapshot during CF \
update.<br> <br>
What was the name of the snapshot folder ?<br>
<br>
btw it&#39;s a really good idea to upgrade to 0.7.4 if possible<br>
<font color="#888888"><br>
Aaron<br>
</font><div><div></div><div><br>
On 30 Mar 2011, at 20:55, Roberto Bentivoglio wrote:<br>
<br>
&gt; Hi all,<br>
&gt; I&#39;ve executed from cassandra-cli on a production server (0.7.0) the \
following instruction:<br> &gt;<br>
&gt; update column family CFName with gc_grace=0;<br>
&gt;<br>
&gt; I&#39;m really surprise that Cassandra take a snapshots of the data for every \
update that I executed.<br> &gt; Is this a normal behaviour?<br>
&gt;<br>
&gt; Thanks,<br>
&gt; Roberto Bentivoglio<br>
<br>
</div></div></blockquote></div><br>
</blockquote></div><br></div></div></div></div></blockquote></div><br></div>



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