dosubot[bot] commented on issue #2654:
URL:
https://github.com/apache/incubator-hugegraph/issues/2654#issuecomment-2323617921
<!-- Answer -->
The `PerfUtilTest` failures you're encountering with multiple
`java.lang.LinkageError` exceptions are due to class loading conflicts. This
typically happens when there are multiple versions of the same class loaded by
different class loaders, leading to `LinkageError`.
To resolve this issue, you should ensure that:
1. There is only one instance of `PerfUtil` being used.
2. The class loading is properly managed and synchronized.
3. Any dynamic class loading or reflection is handled carefully to avoid
conflicts.
Here is a snippet from the `PerfUtilTest` class that shows the usage of
`PerfUtil`:
```java
public class PerfUtilTest extends BaseUnitTest {
private static final String prefix =
"org.apache.hugegraph.unit.perf.testclass.";
private static final PerfUtil perf = PerfUtil.instance();
@After
public void teardown() {
perf.clear();
}
@Test
public void testPerfUtil() throws Throwable {
perf.profileClass(prefix + "TestClass$Foo");
TestClass.Foo obj = new TestClass.Foo();
obj.foo();
perf.toString();
perf.toECharts();
String json = perf.toJson();
assertContains(json, "foo.foo#times", 1);
// Other assertions...
}
// Other test methods...
}
```
Ensure that the `PerfUtil` instance is not causing class loading conflicts
and that the test environment is clean and isolated to prevent such issues
<sup>[[1]](https://github.com/apache/incubator-hugegraph/blob/master/hugegraph-commons/hugegraph-common/src/test/java/org/apache/hugegraph/unit/perf/PerfUtilTest.java)</sup>.
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