load error: jruby/java/java_ext/java.lang -- java.lang.reflect.InaccessibleObjectException: Unable to make protected java.lang.Object java.lang.Object.clone() throws java.lang.CloneNotSupportedException accessible

advancedwebdeveloper commented 3 years ago

I was trying to build Apache NiFi of version

$ git log -1 commit 3508b5b12f0c29c74d6902c1d6f851f990a21498 (HEAD -> main, origin/main, origin/HEAD) Author: Karthick Narendran karthick.narendran@gmail.com Date: Thu Mar 18 12:43:01 2021 +0000
NIFI-7850 Adds nifi.cluster.protocol.is.secure to Docker secure.sh

This closes #4896

Signed-off-by: Joey Frazee <jfrazee@apache.org>

and got such an error:

[INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 04:21 min (Wall Clock) [INFO] Finished at: 2021-03-21T22:55:45Z [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.asciidoctor:asciidoctor-maven-plugin:1.5.2:process-asciidoc (output-html) on project nifi-docs: Execution output-html of goal org.asciidoctor:asciidoctor-maven-plugin:1.5.2:process-asciidoc failed: (LoadError) load error: jruby/java/java_ext/java.lang -- java.lang.reflect.InaccessibleObjectException: Unable to make protected java.lang.Object java.lang.Object.clone() throws java.lang.CloneNotSupportedException >accessible: module java.base does not "opens java.lang" to unnamed module @fd2fdd38

I was building using

$ mvn -version Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f) Maven home: /home/oceanfish81/apache-maven-3.6.3 Java version: 16-ea, vendor: AdoptOpenJDK, runtime: /usr/lib/jvm/adoptopenjdk-16-openj9-arm64 Default locale: en_US, platform encoding: UTF-8 OS name: "linux", version: "5.4.0-40-generic", arch: "aarch64", family: "unix"

with

$ java -version openjdk version "16-ea" 2021-03-16 OpenJDK Runtime Environment AdoptOpenJDK (build 16-ea+36) Eclipse OpenJ9 VM AdoptOpenJDK (build openj9-0.25.0, JRE 16 Linux aarch64-64-Bit Compressed References 20210311_79 (JIT enabled, AOT enabled) OpenJ9 - 022d65424 OMR - 09514431e JCL - 0c11227a21 based on jdk-16+36)

$ javac -version ajavac 16-ea

on

$ uname -a Linux ams1-c2-large-arm-01 5.4.0-40-generic #44-Ubuntu SMP Mon Jun 22 23:59:48 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux

.

CC @tspannhw @smlambert

abelsromero commented 3 years ago

I suspect may be related with the changes in Java16, need to investigate more.

advancedwebdeveloper commented 3 years ago

OK, let me know if you would require more investigations on an Aarch64 server.

I might configure a specific server as a workload node, for the CI. Also something like https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners , on Aarch64, could be possible.

abelsromero commented 3 years ago

Good new, is easy to fix as far as I could see. Note I focused on the docs project, any other issue is out of my scope. I could reproduce the same issue (see below) and build the docs project with mvn -am -pl nifi-docs clean package.

Just add the latest jruby to the plugin runtime as in this example.

            <plugin>
                <groupId>org.asciidoctor</groupId>
                <artifactId>asciidoctor-maven-plugin</artifactId>
                <version>1.5.2</version>
                <executions>
                    <execution>
                        <id>output-html</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>process-asciidoc</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <sourceDirectory>${project.build.directory}/asciidoc</sourceDirectory>
                    <backend>html5</backend>
                    <attributes>
                        <imagesdir>./images</imagesdir>
                        <icons>font</icons>
                        <toc>true</toc>
                        <toclevels>3</toclevels>
                        <docVersion>${project.version}</docVersion>
                        <sectanchors>true</sectanchors>
                        <idprefix />
                        <idseparator>-</idseparator>
                        <docinfo1>true</docinfo1>
                        <stylesheet>asciidoc-mod.css</stylesheet>
                    </attributes>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.jruby</groupId>
                        <artifactId>jruby-complete</artifactId>
                        <version>${jruby.version}</version>
                    </dependency>
                </dependencies>
            </plugin>

On another note, I saw few things that could be improved:

The project uses a very old version of the plugin, so it would be advised to upgrade. The plugin comes with neewer versions od Asciidoctor, so it's not only improving the build tool but documentation features.
Newer versions incluse resource management, so maven-resources-plugin could be removed and css be better managed in a resources folder.
The configuration sets <idseparator>-</idseparator> but in the docs there're several ids set manually using _. Setting <idseparator>_</idseparator> would remove some of that manual work.
Not many source examples set the languge. That would improve the docs.
I see many lists that highlight a term, like Amazon Web Services in getting-started.adoc. You could use https://docs.asciidoctor.org/asciidoc/latest/lists/description/ to reduce manualy formating the words.

My environment and error:

/temp/nifi >>> mvn -v
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /home/asalgadr/.sdkman/candidates/maven/current
Java version: 16, vendor: AdoptOpenJDK, runtime: /home/asalgadr/.sdkman/candidates/java/16.0.0.hs-adpt
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.11.6-1-manjaro", arch: "amd64", family: "unix"

[ERROR] Failed to execute goal org.asciidoctor:asciidoctor-maven-plugin:1.5.2:process-asciidoc (output-html) on project nifi-docs: Execution output-html of goal org.asciidoctor:asciidoctor-maven-plugin:1.5.2:process-asciidoc failed: (LoadError) load error: jruby/java/java_ext/java.lang -- java.lang.reflect.InaccessibleObjectException: Unable to make protected native java.lang.Object java.lang.Object.clone() throws java.lang.CloneNotSupportedException accessible: module java.base does not "opens java.lang" to unnamed module @3c5044fa -> [Help 1]

abelsromero commented 3 years ago

I am closing this, if you encounter any related issue feel free to re-open.

If you need assistance upgrading Apache NiFi asciidoctor settings, please do not hesitate to "at" me from the repo. I'll be happy to help.

asciidoctor / asciidoctor-maven-plugin

load error: jruby/java/java_ext/java.lang -- java.lang.reflect.InaccessibleObjectException: Unable to make protected java.lang.Object java.lang.Object.clone() throws java.lang.CloneNotSupportedException accessible #517