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https://issues.apache.org/jira/browse/IGNITE-6749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitriy Pavlov resolved IGNITE-6749.
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Resolution: Cannot Reproduce
> Illegal comparsion in NodeOrderComparator
> -----------------------------------------
>
> Key: IGNITE-6749
> URL: https://issues.apache.org/jira/browse/IGNITE-6749
> Project: Ignite
> Issue Type: Bug
> Components: general
> Affects Versions: 2.1
> Reporter: Alexander Belyak
> Assignee: Dmitriy Pavlov
> Priority: Major
>
> In org.apache.ignite.internal.cluster.compare method code
> {panel}
> Object consId1 = n1.consistentId();
> Object consId2 = n2.consistentId();
> if (consId1 instanceof Comparable && consId2 instanceof Comparable) {
> return ((Comparable)consId1).compareTo(consId2);
> }
> {panel}
> check only that consId1 and consId2 is Comparable, but they may not be
> Comparable to each other. For example: String and UUID is comparable, but
> UUID.compareTo(String) throw ClassCastException.
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