[jira] [Created] (IGNITE-18307) Long wait on locHost.isReachable

["Aleksey Plekhanov (Jira)" <ji...@apache.org>]

Aleksey Plekhanov created IGNITE-18307:
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             Summary: Long wait on locHost.isReachable
                 Key: IGNITE-18307
                 URL: https://issues.apache.org/jira/browse/IGNITE-18307
             Project: Ignite
          Issue Type: Improvement
            Reporter: Aleksey Plekhanov
            Assignee: Aleksey Plekhanov


When node starts it submit background task to check if local host is reachable (see {{{}GridDiagnostic#runBackgroundCheck{}}}). This check only prints warning to the log in some cases, but execution of {{locHost.isReachable}} method can be relatively durable (for example, on my laptop it's executed for about 1 second, on TeamCity server looks like it's executed for about 500 ms). This task executed asynchronously, but before node stops it shut down pools and waits for this task, so start and stop of the node can't  consume less time than \{{locHost.isReachable}} method.

We have some tests, which are start the node, do some trivial work and stop the node in cycle or with different parameters. Currently each cycle of such a tests can consume more than one second, but actially start/stop node without \{{locHost.isReachable}} and performing trivial action consumes tens or hundreds of milliseconds.

Proposal: do \{{locHost.isReachable}} check only once per JVM instance, this can reduce a little time of tests run on TeamCity.



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