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From Prachi Garg <pg...@gridgain.com>
Subject Re: Erroneous Baseline Topology documentation
Date Tue, 03 Jul 2018 22:55:32 GMT
Hi Ivan,

I have fixed and rephrased the section -
https://apacheignite.readme.io/v2.5/docs/baseline-topology#section-cluster-activation

However, I have a question regarding setting the baseline topology when
activating the cluster for the first time. In the web console, when we
activate the cluster, using the toggle switch, all server nodes in the
cluster are automatically added to the baseline topology. Does this mean
that when we activate the cluster for the first time, via code, we do not
need the following piece code?

// Get all server nodes that are already up and running.
Collection<ClusterNode> nodes = ignite.cluster().forServers().nodes();

// Set the baseline topology that is represented by these nodes.
ignite.cluster().setBaselineTopology(nodes);

I guess just activating the cluster would add all the existing nodes to the
baseline topology?



On Tue, Jul 3, 2018 at 12:48 PM, Ivan Rakov <ivan.glukos@gmail.com> wrote:

> I've tried to execute exactly the same code, it resulted with
>
> class org.apache.ignite.IgniteException: Changing BaselineTopology on
>> inactive cluster is not allowed.
>>
> Basically, the code snippet is in "Setting the Topology From Code"
> section, so we can make it correct by just removing "activation" and "first
> baseline topology" parts.
>
> Best Regards,
> Ivan Rakov
>
>
>
> On 03.07.2018 22:30, Denis Magda wrote:
>
>> Prachi,
>>
>> I do remember that that code, Ivan is referring to, worked fine for you.
>> Please double check. Probably you need to add "ignite.cluster.activate()"
>> to the code snippet.
>>
>> --
>> Denis
>>
>> On Tue, Jul 3, 2018 at 12:19 PM Ivan Rakov <ivan.glukos@gmail.com> wrote:
>>
>> Igniters,
>>>
>>> Seems like we have an inconsistency in our Baseline Topology
>>> documentation:
>>>
>>> https://apacheignite.readme.io/docs/baseline-topology#sectio
>>> n-setting-the-topology-from-code
>>>
>>> Java developers can use the IgniteCluster interface to initialize the
>>>> very first baseline topology or to adjust an existing one. The sample
>>>> below shows how to add all the existing server nodes to the baseline
>>>> topology:‚Äč
>>>> // Connecting to the cluster.
>>>> Ignite ignite = Ignition.start();
>>>>
>>>> // Setting the baseline topology to a specific Ignite cluster topology
>>>> version.
>>>> ignite.cluster().setBaselineTopology(2);
>>>>
>>> This is not true; baseline topology can't be changed on inactive
>>> cluster. The only viable way to initialize the very first baseline
>>> topology is manual cluster activation. This is correctly explained in
>>> this section:
>>>
>>> https://apacheignite.readme.io/docs/baseline-topology#sectio
>>> n-first-cluster-startup
>>>
>>> --
>>> Best Regards,
>>> Ivan Rakov
>>>
>>>
>>>
>

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