estimated number of keys vs ttl

[Grzegorz Pietrusza <gp...@gmail.com>]

Hi

I'm using tablestats to get estimated number of partitioning keys. In my
case all writes are done with TTL of a few days. Is the key count decreased
when TTL hits?

Regards
Grzegorz

Re: estimated number of keys vs ttl

[Eric Stevens <mi...@gmail.com>]

I believe that key estimates won't immediately respond to expired TTL, Not
until after compaction has completely dropped the records (which will
include subtle logic related to gc_grace and partitions with data in
multiple SSTables).

On Wed, May 23, 2018 at 6:18 AM Rahul Singh <ra...@gmail.com>
wrote:

> If the TTL actually reduces the key count , should. It’s possible to TTL a
> row from a partition but not the whole partition. 1 key = 1 partition != 1
> row != 1 cell
>
> --
> Rahul Singh
> rahul.singh@anant.us
>
> Anant Corporation
>
> On May 23, 2018, 6:07 AM -0500, Grzegorz Pietrusza <gp...@gmail.com>,
> wrote:
>
> Hi
>
> I'm using tablestats to get estimated number of partitioning keys. In my
> case all writes are done with TTL of a few days. Is the key count decreased
> when TTL hits?
>
> Regards
> Grzegorz
>
>

Re: estimated number of keys vs ttl

[Rahul Singh <ra...@gmail.com>]

If the TTL actually reduces the key count , should. It’s possible to TTL a row from a partition but not the whole partition. 1 key = 1 partition != 1 row != 1 cell

--
Rahul Singh
rahul.singh@anant.us

Anant Corporation

On May 23, 2018, 6:07 AM -0500, Grzegorz Pietrusza <gp...@gmail.com>, wrote:
> Hi
>
> I'm using tablestats to get estimated number of partitioning keys. In my case all writes are done with TTL of a few days. Is the key count decreased when TTL hits?
>
> Regards
> Grzegorz