Paul Rogers created DRILL-5170:
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Summary: Mockito-based unit tests fail when run under Java 8
Key: DRILL-5170
URL: https://issues.apache.org/jira/browse/DRILL-5170
Project: Apache Drill
Issue Type: Bug
Affects Versions: 1.8.0
Reporter: Paul Rogers
Priority: Minor
Drill makes extensive use of the Mockito mocking library. Drill uses a very old
version of Mockito. Mockito appears to perform byte-code manipulations that are
incompatible with Java 8. For example:
{code}
cd exec/java-exec/
mvn surefire:test -Dtest=TestSimpleProjection
Running org.apache.drill.exec.physical.impl.project.TestSimpleProjection#project
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 6.794 sec <<<
FAILURE! - in org.apache.drill.exec.physical.impl.project.TestSimpleProjection
project(org.apache.drill.exec.physical.impl.project.TestSimpleProjection) Time
elapsed: 0.215 sec <<< ERROR!
java.lang.VerifyError: null
at sun.instrument.InstrumentationImpl.redefineClasses0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.lang.reflect.Method.invoke(Method.java:498)
{code}
A similar error occurs when running the same unit test under Eclipse.
Fixing this issue is non-trivial. Mockito is subject to rapid change. The
semantics of mocks has changed significantly. Code that works fine in our old
version requires extensive rework to work with the current version.
For now, the only workaround is to compile Drill under the (obsolete) Java 7
and use that version to run unit tests.
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