[jira] [Created] (IGNITE-8571) Baseline auto-adjust feature

["Eduard Shangareev (JIRA)" <ji...@apache.org>]

Eduard Shangareev created IGNITE-8571:
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             Summary: Baseline auto-adjust feature
                 Key: IGNITE-8571
                 URL: https://issues.apache.org/jira/browse/IGNITE-8571
             Project: Ignite
          Issue Type: New Feature
            Reporter: Eduard Shangareev


Now we have only one way to change BLAT - manually update it via console.sh or API.

We need to add the possibility to change it automatically. Adjust to current topology.

So, I propose 3 new parameters which would be responsible to tune this feature.
1. Flag autoAdjustEnabled - true/false. Easy. Manual baseline control or auto adjusting baseline.

2. autoAdjustTimeout - time which we would wait after the actual topology change. But it would be reset if new discovery event happened. (node join/exit).

3. autoAdjustMaxTimeout - time which we would wait from the first dicovery event in the chain. If we achieved it than we would change BLAT right away (no matter were another node join/exit happened or not).

We need to change API next way:
1. org.apache.ignite.IgniteCluster

*Add*
isBaselineAutoAdjustEnabled()
setBaselineAutoAdjustEnabled(boolean enabled);
setBaselineAutoAdjustTimeout(long timeoutInMs);
setBaselineAutoAdjustMaxTimeout(long timeoutInMs);

2. org.apache.ignite.configuration.IgniteConfiguration

*Add*
IgniteConfiguration setBaselineAutoAdjustEnabled(boolean enabled);
IgniteConfiguration setBaselineAutoAdjustTimeout(long timeoutInMs);
IgniteConfiguration setBaselineAutoAdjustMaxTimeout(long timeoutInMs);

Also, we need to ensure that all nodes would have the same parameters.
And we should be able to survive coordinator left during parameters changes.



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