Compilation time is very slow.

[Maksym Hryhoriev]

I have simple Reactive SpringBoot application with OpenSearch integration:

JDK: 23.0.1

Maven: 3.9.9

Lombok: 1.18.36

SpringBoot: 3.4.2

Checker: 3.49.0 (tried previous versions too)

There are just 35 source files and raw compilation takes 1.5 sec.

But when I add checker then the compilation time is 3 min - 100x more :(

My maven plugin config:

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<configuration>

<release>${java.version}</release>

<fork>true</fork>

<showDeprecation>true</showDeprecation>

<showWarnings>true</showWarnings>

<annotationProcessorPaths>

<path>

<groupId>org.projectlombok</groupId>

<artifactId>lombok</artifactId>

<version>${lombok.version}</version>

</path>

<path>

<groupId>org.checkerframework</groupId>

<artifactId>checker</artifactId>

<version>${checker-framework.version}</version>

</path>

<path>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-configuration-processor</artifactId>

<version>${spring-boot.version}</version>

</path>

</annotationProcessorPaths>

<annotationProcessors>

<annotationProcessor>

lombok.launch.AnnotationProcessorHider$AnnotationProcessor

</annotationProcessor>

<annotationProcessor>

org.checkerframework.checker.nullness.NullnessChecker

</annotationProcessor>

<annotationProcessor>

org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor

</annotationProcessor>

</annotationProcessors>

<compilerArgs combine.children="append">

<arg>--enable-preview</arg>

<arg>-Werror</arg>

<arg>-AskipUses="^.*Test.*"</arg>

<arg>-AskipDefs="^.*Test.*"</arg>

<arg>-AonlyUses=com\.myproject\.search.*</arg>

<arg>-AonlyDefs=com\.myproject\.search.*</arg>

<arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED</arg>

<arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED</arg>

<arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED</arg>

<arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED</arg>

<arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED</arg>

<arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED</arg>

<arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED</arg>

</compilerArgs>

</configuration>

</plugin>

I saw that checker can add 2-10x times to compilation but not 100x :(

When I remove the checker annotation processor, the compilation time returns to 1.5-2 secs.

Is there anything I can do to optimize it?

Thanks