[jira] [Created] (IGNITE-6667) Allow discovery cache instance reuse if only minor topology change has occured.

[Alexei Scherbakov (JIRA)]

Alexei Scherbakov created IGNITE-6667:
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             Summary: Allow discovery cache instance reuse if only minor 
topology change has occured.
                 Key: IGNITE-6667
                 URL: https://issues.apache.org/jira/browse/IGNITE-6667
             Project: Ignite
          Issue Type: Improvement
      Security Level: Public (Viewable by anyone)
    Affects Versions: 2.2
            Reporter: Alexei Scherbakov
            Assignee: Alexei Scherbakov
             Fix For: 2.4


Currently we always recreating DiscoCache instance even if only minor topology 
change has occured and cache may be reused.

Profiling shows what initialization of such object tooks up tens of millis 
which adds to ring latency delay and especially sensitive for large topologies.

Solution: reuse current discovery cache instance if possible.





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