[ErrorProne] enable ClassInitializationDeadlock, Finalize, NullableTypeParameter, ThreadPriorityCheck

[stankiewicz]

Enable error-prone checks: ClassInitializationDeadlock, Finalize, NullableTypeParameter, ThreadPriorityCheck
and suppress all occurences as they are needed.

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly improves the project's code quality and robustness by activating several new ErrorProne static analysis checks. These checks are designed to identify common programming pitfalls related to class initialization, object finalization, nullable type parameters, and thread priority management. The change involves a two-step process: first, enabling these checks globally, and then carefully applying suppressions to existing code where the identified patterns are deemed acceptable or necessary, thus preventing new occurrences of these issues without requiring extensive refactoring.

Highlights

• ErrorProne Checks Enabled: Four new ErrorProne checks have been enabled: ClassInitializationDeadlock, Finalize, NullableTypeParameter, and ThreadPriorityCheck. These checks enhance static analysis to catch potential issues earlier in the development cycle.
• Targeted Warning Suppressions: Existing code that triggered warnings from the newly enabled checks has been updated with targeted @SuppressWarnings annotations. This ensures that the new checks are active for future code while allowing current, stable implementations to remain unchanged.

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Changelog

• buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy
  • Enabled ClassInitializationDeadlock, Finalize, NullableTypeParameter, and ThreadPriorityCheck ErrorProne checks by removing them from the default suppression list.
• runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/ApplianceShuffleReader.java
  • Suppressed the Finalize ErrorProne check for the finalize method.
• runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/ApplianceShuffleWriter.java
  • Suppressed the Finalize ErrorProne check for the finalize method.
• runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/BatchDataflowWorker.java
  • Suppressed the ThreadPriorityCheck ErrorProne check for the startMemoryMonitorThread method.
• runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/WindmillServerBase.java
  • Suppressed the Finalize ErrorProne check for the finalize method.
• sdks/java/core/src/main/java/org/apache/beam/sdk/io/UnboundedSource.java
  • Suppressed the ClassInitializationDeadlock ErrorProne check for the NOOP_CHECKPOINT_MARK field.
• sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/reflect/DoFnSignature.java
  • Suppressed the ClassInitializationDeadlock ErrorProne check for the Parameter abstract class.
• sdks/java/core/src/main/java/org/apache/beam/sdk/util/UnboundedScheduledExecutorService.java
  • Suppressed the NullableTypeParameter ErrorProne check for the UnboundedScheduledExecutorService class.
• sdks/java/harness/src/main/java/org/apache/beam/fn/harness/status/BeamFnStatusClient.java
  • Suppressed the ThreadPriorityCheck ErrorProne check for the constructor.
• sdks/java/io/iceberg/src/test/java/org/apache/beam/sdk/io/iceberg/catalog/hiveutils/ScriptRunner.java
  • Suppressed the ThreadPriorityCheck ErrorProne check for the ScriptRunner class.
• sdks/java/io/kafka/src/main/java/org/apache/beam/sdk/io/kafka/KafkaIO.java
  • Suppressed the NullableTypeParameter ErrorProne check for the NullOnlyCoder class.
• sdks/java/io/rrio/src/main/java/org/apache/beam/io/requestresponse/Cache.java
  • Suppressed the NullableTypeParameter ErrorProne check for the Cache class.

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