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https://issues.apache.org/jira/browse/IGNITE-6842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16421623#comment-16421623
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Maxim Muzafarov commented on IGNITE-6842:
-----------------------------------------

Folks,

Let me describe some significat changes of whole this PR:
 # Added new {{stopAllGridsSilently}} method which throws exception in case 
stopping grids, so we can see failed tests fast;
 # Added {{stopAllGridsSilently}} to {{afterTestsStop}} method body. This way 
we recommend users to expect stopping grids by default, but in case some 
complex stop-grid processes default behavior can be overrided;
 # Added assertion check of `not running grids` for the first test-cases run in 
{{setUp}} method body. Check can't be overrided and we are forcing users not to 
forget stop Ignite instances;
 # Introduced {{isSafeTopology}} flag. I've found test suites (e.g. classes 
inherited from 
[IgniteConfigVariationsAbstractTest.java|https://github.com/apache/ignite/pull/3542/files#diff-cd3a07ce10f21d396c1eac0c328850e0])
 which don't want to stop grids between test-classes execution. That's why, we 
should turn off all checks by setting {{isSafeTopology = false}} for this test 
suites.

Also,
 TC build: [#963 (30 Mar 18 
20:06)|https://ci.ignite.apache.org/viewLog.html?buildId=1169144] looks good. I 
haven't found any failed test-cases caused by my changes.

[~dpavlov], [~NIzhikov] Will you have time to review my changes?

> Stop all nodes after test by default.
> -------------------------------------
>
>                 Key: IGNITE-6842
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6842
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Alexei Scherbakov
>            Assignee: Maxim Muzafarov
>            Priority: Major
>              Labels: newbie
>             Fix For: 2.5
>
>         Attachments: IgniteStopGridsTestSuite.java, 
> StopGridsStateFirstTest.java, StopGridsStateSecondTest.java
>
>
> Currently it's required to manually call stopAllGrids() after test completion.
> This leads to errors in subsequent tests if someone forgets to call it and to 
> additional boilerplate code in tests.
> Right choice is to make this default behavior.



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