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Posted to issues@arrow.apache.org by "Todd Farmer (Jira)" <ji...@apache.org> on 2022/04/28 22:41:00 UTC
[jira] [Created] (ARROW-16412) Provide guidance on supported Java versions in README
Todd Farmer created ARROW-16412:
-----------------------------------
Summary: Provide guidance on supported Java versions in README
Key: ARROW-16412
URL: https://issues.apache.org/jira/browse/ARROW-16412
Project: Apache Arrow
Issue Type: Improvement
Components: Documentation, Java
Reporter: Todd Farmer
The [README|https://github.com/apache/arrow/blob/master/java/README.md] for Java lists the following requirements for a build envirnment:
* Java 8 or later
* Maven 3.3 or later
However, compiling with Java 16 generates the following error:
{code:java}
[INFO] --- maven-compiler-plugin:3.6.2:compile (default-compile) @ arrow-format ---
[INFO] Compiling 54 source files to /home/todd/Documents/arrow/java/format/target/classes
[WARNING] Unable to autodetect 'javac' path, using 'javac' from the environment.
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for Apache Arrow Java Root POM 8.0.0-SNAPSHOT:
[INFO]
[INFO] Apache Arrow Java Root POM ......................... SUCCESS [ 5.170 s]
[INFO] Arrow Format ....................................... FAILURE [ 1.357 s]
[INFO] Arrow Memory ....................................... SKIPPED
[INFO] Arrow Memory - Core ................................ SKIPPED
[INFO] Arrow Memory - Unsafe .............................. SKIPPED
[INFO] Arrow Memory - Netty ............................... SKIPPED
[INFO] Arrow Vectors ...................................... SKIPPED
[INFO] Arrow Compression .................................. SKIPPED
[INFO] Arrow Tools ........................................ SKIPPED
[INFO] Arrow JDBC Adapter ................................. SKIPPED
[INFO] Arrow Plasma Client ................................ SKIPPED
[INFO] Arrow Flight ....................................... SKIPPED
[INFO] Arrow Flight Core .................................. SKIPPED
[INFO] Arrow Flight GRPC .................................. SKIPPED
[INFO] Arrow Flight SQL ................................... SKIPPED
[INFO] Arrow Flight Integration Tests ..................... SKIPPED
[INFO] Arrow AVRO Adapter ................................. SKIPPED
[INFO] Arrow Algorithms ................................... SKIPPED
[INFO] Arrow Performance Benchmarks ....................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.890 s
[INFO] Finished at: 2022-04-28T15:39:11-06:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.2:compile (default-compile) on project arrow-format: Compilation failure -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <args> -rf :arrow-format
todd@todd-ThinkPad-W541:~/Documents/arrow/java$ javac -version
javac 16.0.1
todd@todd-ThinkPad-W541:~/Documents/arrow/java$ /opt/
apache-maven-3.8.5/ google/ maven/
todd@todd-ThinkPad-W541:~/Documents/arrow/java$ mvn -version
Apache Maven 3.8.5 (3599d3414f046de2324203b78ddcf9b5e4388aa0)
Maven home: /opt/maven
Java version: 16.0.1, vendor: Private Build, runtime: /usr/lib/jvm/java-16-openjdk-amd64
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.13.0-40-generic", arch: "amd64", family: "unix"
todd@todd-ThinkPad-W541:~/Documents/arrow/java$ {code}
Reverting to Java 11 eliminated the error.
It's worth noting that the error messages are opaque - there's no specific indication that the problem is a version incompatibility. While there is a reference to supported Java versions in the [installation page|https://arrow.apache.org/docs/dev/java/install.html] of the documentation, it's easy enough for that to be missed in favor of the README. It could be useful to also codify supported versions through [maven enforcement|https://maven.apache.org/enforcer/enforcer-rules/requireJavaVersion.html], supplying a less opaque error message when an incompatible Java version is used..
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