ShardingSphere fails to build on OpenJDK 21 EA

[linghengqian]

Bug Report

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• Searched open and closed GitHub issues.
• Read documentation: ShardingSphere Doc.

Please pay attention on issues you submitted, because we maybe need more details.
If no response anymore and we cannot reproduce it on current information, we will close it.

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Which version of ShardingSphere did you use?

• 4563afd

Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?

• ShardingSphere-JDBC

Expected behavior

• Both Adoptium and GraalVM CE have created downstream builds of OpenJDK 21, time to validate OpenJDK 21 on the ShardingSphere side. Refer to https://adoptium.net/zh-CN/blog/2023/08/early-access-builds/ and https://github.com/graalvm/graalvm-ce-dev-builds/releases/tag/23.1.0-dev-20230817_2024 . Considering that GraalVM CE 23.1.0 only have OpenJDK21 binary, it is very suitable to intervene in the investigation of ShardingSphere Proxy Native in advance. Refer to Make ShardingSphere Proxy in GraalVM Native Image form available #21347 .

• I created a small test at https://github.com/linghengqian/shardingsphere-jdk21-ea-ci-test and the results are at https://github.com/linghengqian/shardingsphere-jdk21-ea-ci-test/actions/runs/6003591784/job/16282365479 . Assume there are no errors reported for this CI.

Actual behavior

• It looks like some modules about com.sun.tools.javac.tree.JCTree$JCImport broke ShardingSphere builds on OpenJDK 21 EA.
  Refer to [BUG] lombok 1.8.26 incompatible with JDK21 projectlombok/lombok#3393 .

Error: ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.11.0:compile (default-compile) on project shardingsphere-test-util: Fatal error compiling: java.lang.NoSuchFieldError: Class com.sun.tools.javac.tree.JCTree$JCImport does not have member field 'com.sun.tools.javac.tree.JCTree qualid' -> [Help 1] 

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.11.0:compile (default-compile) on project shardingsphere-test-util: Fatal error compiling 

at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:375)

Reason analyze (If you can)

• Null.

Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc.

• Switch to any OpenJDK 21 downstream distribution. Execute the following command.

git clone -b master https://github.com/apache/shardingsphere.git
cd ./shardingsphere/
git reset --hard 4563afd14d23d494f75f680c47a351cdd19893db
./mvnw clean install -B -T1C -Dmaven.javadoc.skip -Dmaven.jacoco.skip -e

Example codes for reproduce this issue (such as a github link).

• https://github.com/linghengqian/shardingsphere-jdk21-ea-ci-test

[linghengqian]

• Interrupted by [BUG] Compile error on Java 21, Unsupported class file major version 65 projectlombok/lombok#3492 (comment) .

[linghengqian]

• Wait for https://groups.google.com/g/project-lombok/c/gdpmprn1B40/m/VYOuh6g3AQAJ .