[jira] [Created] (IGNITE-7749) testDiscoCacheReuseOnNodeJoin fails on TC

["Pavel Kovalenko (JIRA)" <ji...@apache.org>]

Pavel Kovalenko created IGNITE-7749:
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             Summary: testDiscoCacheReuseOnNodeJoin fails on TC
                 Key: IGNITE-7749
                 URL: https://issues.apache.org/jira/browse/IGNITE-7749
             Project: Ignite
          Issue Type: Bug
          Components: cache
            Reporter: Pavel Kovalenko
            Assignee: Pavel Kovalenko


{code:java}
java.lang.ClassCastException: org.apache.ignite.internal.util.GridConcurrentHashSet cannot be cast to java.lang.String
    at org.apache.ignite.spi.discovery.IgniteDiscoveryCacheReuseSelfTest.assertDiscoCacheReuse(IgniteDiscoveryCacheReuseSelfTest.java:93)
    at org.apache.ignite.spi.discovery.IgniteDiscoveryCacheReuseSelfTest.testDiscoCacheReuseOnNodeJoin(IgniteDiscoveryCacheReuseSelfTest.java:64)
{code}


There are 2 problems in the test.

1) We don't wait for final topology version is set on all nodes and start checking discovery caches immediately after grids starting. It leads to possible NullPointerException while accessing to discovery caches history.
2) We don't use explicit assertEquals(String, Object, Object) related to comparing Objects, while Java can choose assertEquals(String, String) method to compare discovery cache fields which we're getting in runtime using reflection.



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