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https://issues.apache.org/jira/browse/IGNITE-19688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17737843#comment-17737843
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Mirza Aliev commented on IGNITE-19688:
--------------------------------------
[~vpyatkov] Could you please take a look?
> NPE in ItNodeTest#testChangePeersStepsDownInJointConsensus
> ----------------------------------------------------------
>
> Key: IGNITE-19688
> URL: https://issues.apache.org/jira/browse/IGNITE-19688
> Project: Ignite
> Issue Type: Bug
> Reporter: Yury Gerzhedovich
> Assignee: Mirza Aliev
> Priority: Blocker
> Labels: ignite-3
> Time Spent: 10m
> Remaining Estimate: 0h
>
> org.apache.ignite.raft.jraft.core.ItNodeTest#testChangePeersStepsDownInJointConsensus
> {noformat}
> java.lang.NullPointerException
> at
> org.apache.ignite.raft.jraft.core.ItNodeTest.testChangePeersStepsDownInJointConsensus(ItNodeTest.java:3385)
>
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>
> at java.base/java.lang.reflect.Method.invoke(Method.java:566)
> {noformat}
> *Motivation*
> The root cause of the issue is the method of getting leader
> (_TestCluster#getLeader_) might return _null_ even if the test waits a leader
> before (_TestCluster#waitLeader_).
> *Implementation Notes*
> Create a new method that returns a leader just after it has waited it
> (_TestCluster#waitAndGetLeader_).
> *Definition of Done*
> Verify all places where method of waiting leader is used and replace it to
> new one in that case where getting leader is not expected to receive _null_.
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