Arina Ielchiieva created DRILL-7393:
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Summary: Revisit Drill tests to ensure that patching is executed
before any test run
Key: DRILL-7393
URL: https://issues.apache.org/jira/browse/DRILL-7393
Project: Apache Drill
Issue Type: Task
Affects Versions: 1.16.0
Reporter: Arina Ielchiieva
Apache Drill patches some Protobuf and Guava classes (see GuavaPatcher,
ProtobufPatcher), patching should be done before classes to be patched are
loaded. That's why this operation is executed in static block in Drillbit class.
Some tests in java-exec module use Drillbit class, some extend DrillTest class,
both of them patch Guava. But there are some tests that do not call patcher but
load classes to be patched. For example,
{{org.apache.drill.exec.sql.TestSqlBracketlessSyntax}} loads Guava
Preconditions class. If such tests run before tests that require patching,
tests run will fail since patching won't be successful. Patchers code does not
fail application if patching was not complete, just logs warning
({{logger.warn("Unable to patch Guava classes.", e);}}), so sometimes it hard
to identify unit tests failure root cause.
We need to revisit all Drill tests to ensure that all of them extend common
test base class which patchers Protobuf and Guava classes in static block. Also
refactor Patcher classes to have assert so patching fails during unit testing
if there are any problems.
After all tests are revised, we can remove {{metastore-test}} execution from
main.xml in {{maven-surefire-plugin}} which was added to ensure that all
Metastore tests run in a separate JVM where patching is done in first place
since Iceberg Metastore heavily depends on patched Guava Preconditions class.
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