Hi Robert,

It sounds like you have done a fair bit investigating and testing already.
Have you considered using a time based data model to avoid doing deletions
in the database?

Regards,
Anthony


On Thu, Jan 9, 2014 at 1:26 PM, sankalp kohli <kohlisank...@gmail.com>wrote:

> With Level compaction, you will have some data which could not be
> reclaimed with gc grace=0 because it has not compacted yet. For this you
> might want to look at tombstone_threshold
>
>
> On Wed, Jan 8, 2014 at 10:31 AM, Tyler Hobbs <ty...@datastax.com> wrote:
>
>>
>> On Wed, Jan 1, 2014 at 7:53 AM, Robert Wille <rwi...@fold3.com> wrote:
>>
>>>
>>> Also, for this application, it would be quite reasonable to set gc grace
>>> seconds to 0 for these tables. Zombie data wouldn’t really be a problem.
>>> The background process that cleans up orphaned browse structures would
>>> simply re-delete any deleted data that reappeared.
>>>
>>
>> If you can set gc grace to 0, that will basically eliminate your
>> tombstone concerns entirely, so I would suggest that.
>>
>>
>> --
>> Tyler Hobbs
>> DataStax <http://datastax.com/>
>>
>
>

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