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From Bryce Godfrey <Bryce.Godf...@azaleos.com>
Subject RE: size tiered compaction - improvement
Date Wed, 18 Apr 2012 18:13:34 GMT
Per CF or per Row TTL would be very usefull for me also with our timeseries data.

-----Original Message-----
From: Igor [mailto:igor@4friends.od.ua] 
Sent: Wednesday, April 18, 2012 6:06 AM
To: user@cassandra.apache.org
Subject: Re: size tiered compaction - improvement

For my use case it would be nice to have per CF TTL (to protect myself from application bug
and from storage leak due to missed TTL), but seems you can't avoid tombstones even in this
case and if you change CF TTL during runtime.

On 04/18/2012 03:06 PM, Viktor Jevdokimov wrote:
> Our use case requires Column TTL, not CF TTL, because it is variable, not constant.
>
>
> Best regards/ Pagarbiai
>
> Viktor Jevdokimov
> Senior Developer
>
> Email: Viktor.Jevdokimov@adform.com
> Phone: +370 5 212 3063
> Fax: +370 5 261 0453
>
> J. Jasinskio 16C,
> LT-01112 Vilnius,
> Lithuania
>
>
>
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> copies.-----Original Message-----
> From: Radim Kolar [mailto:hsn@filez.com]
> Sent: Wednesday, April 18, 2012 12:57
> To: user@cassandra.apache.org
> Subject: Re: size tiered compaction - improvement
>
>
>> Any compaction pass over A will first convert the TTL data into tombstones.
>>
>> Then, any subsequent pass that includes A *and all other sstables 
>> containing rows with the same key* will drop the tombstones.
> thats why i proposed to attach TTL to entire CF. Tombstones would not 
> be needed


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