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Posted to user@cassandra.apache.org by 金剑 <ji...@gmail.com> on 2012/04/05 04:00:06 UTC
Is there a way to update column's TTL only?
Hi,
We would like to leverage Cassandra's expiration to manage our data's
lifecycle. We need to: Delete data after a period, like: 1 hour , when user
clicked the "Delete" button.
We need to read and insert the column in order to update the TTL, but this
is unacceptable in our system that might need to readout gigabytes of data.
Is there a way to do this?
Best Regards!
Jian Jin
Re: Is there a way to update column's TTL only?
Posted by 金剑 <ji...@gmail.com>.
We do not have a central point to do such work yet, but it seems this is
only way to do it a little bit more efficiently. Thanks.
Best Regards!
Jian Jin
2012/4/5 aaron morton <aa...@thelastpickle.com>
> You cannot set the the TTL without also setting the column value.
>
> Could you keep a record of future deletes in a CF and then action them as
> a batch process ?
>
> Cheers
>
> -----------------
> Aaron Morton
> Freelance Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 5/04/2012, at 2:00 PM, 金剑 wrote:
>
> Hi,
>
> We would like to leverage Cassandra's expiration to manage our data's
> lifecycle. We need to: Delete data after a period, like: 1 hour , when user
> clicked the "Delete" button.
>
> We need to read and insert the column in order to update the TTL, but this
> is unacceptable in our system that might need to readout gigabytes of data.
>
> Is there a way to do this?
>
> Best Regards!
>
> Jian Jin
>
>
>
Re: Is there a way to update column's TTL only?
Posted by aaron morton <aa...@thelastpickle.com>.
You cannot set the the TTL without also setting the column value.
Could you keep a record of future deletes in a CF and then action them as a batch process ?
Cheers
-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 5/04/2012, at 2:00 PM, 金剑 wrote:
> Hi,
>
> We would like to leverage Cassandra's expiration to manage our data's lifecycle. We need to: Delete data after a period, like: 1 hour , when user clicked the "Delete" button.
>
> We need to read and insert the column in order to update the TTL, but this is unacceptable in our system that might need to readout gigabytes of data.
>
> Is there a way to do this?
>
> Best Regards!
>
> Jian Jin
>