Fixing bucketids to specific nodes in gemfire

[Rajiv Kumar <ra...@pivotal.io>]

Hi,

Is there any way we can fix the buckets to a specific node, so that the
bucket sticks to same node irrespective of restarts.

-- 
Thanks and Best Regards,

Rajiv Kumar,

Re: Fixing bucketids to specific nodes in gemfire

[Sergey Shcherbakov <ss...@pivotal.io>]

I think even using the FixedPartitionResolver
<https://github.com/apache/incubator-geode/blob/develop/gemfire-core/src/main/java/com/gemstone/gemfire/cache/FixedPartitionResolver.java>
the
buckets will move between the nodes in case of a node crash or restart
(given sufficient redundancy level). I also don't think that using the
current host name in the FixedPartitionResolver would tie the data to a
[expected] host, since it will not be necessarily executed on the host that
needs to store the data.

So I second Jens, we should first understand the reason for such
requirement and possibly come with alternative solution altogether.


Sergey
On Fri, Sep 11, 2015 at 4:53 PM, Jens Deppe <jd...@pivotal.io> wrote:

> Rajiv,
>
> You could do something like that with Fixed Patitioning but that doesn't
> give you exact control over buckets only the knowledge that buckets won't
> move from host to host. However it is much more restrictive as it makes
> adding additional nodes more restrictive.
>
> Regardless, the first question would be why you have that requirement. It
> would be much better to try and remove the requirement rather than get
> GemFire/Geode to do something sub-optimal.
>
> --Jens
>
> On Thu, Sep 10, 2015 at 10:01 PM, Rajiv Kumar <ra...@pivotal.io> wrote:
>
> > Hi,
> >
> > Is there any way we can fix the buckets to a specific node, so that the
> > bucket sticks to same node irrespective of restarts.
> >
> > --
> > Thanks and Best Regards,
> >
> > Rajiv Kumar,
> >
>

Re: Fixing bucketids to specific nodes in gemfire

[Jens Deppe <jd...@pivotal.io>]

Rajiv,

You could do something like that with Fixed Patitioning but that doesn't
give you exact control over buckets only the knowledge that buckets won't
move from host to host. However it is much more restrictive as it makes
adding additional nodes more restrictive.

Regardless, the first question would be why you have that requirement. It
would be much better to try and remove the requirement rather than get
GemFire/Geode to do something sub-optimal.

--Jens

On Thu, Sep 10, 2015 at 10:01 PM, Rajiv Kumar <ra...@pivotal.io> wrote:

> Hi,
>
> Is there any way we can fix the buckets to a specific node, so that the
> bucket sticks to same node irrespective of restarts.
>
> --
> Thanks and Best Regards,
>
> Rajiv Kumar,
>