[
https://issues.apache.org/jira/browse/MJAVADOC-538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16690964#comment-16690964
]
ASF GitHub Bot commented on MJAVADOC-538:
-----------------------------------------
rfscholte commented on a change in pull request #11: [MJAVADOC-538] Filter out
'Picked up'
URL:
https://github.com/apache/maven-javadoc-plugin/pull/11#discussion_r234453124
##########
File path: src/it/projects/MJAVADOC-538/pom.xml
##########
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied. See the License for the
+ specific language governing permissions and limitations
+ under the License.
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd";>
+ <modelVersion>4.0.0</modelVersion>
+
+ <groupId>org.apache.maven.plugins.maven-javadoc-plugin.it</groupId>
+ <artifactId>mjavadoc-538</artifactId>
+ <version>1.0-SNAPSHOT</version>
+
Review comment:
Add `<url>https://issues.apache.org/jira/browse/MJAVADOC-538</url>` for easy
access to original issue
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> JVM "JAVA_TOOL_OPTIONS" or "_JAVA_OPTIONS" message detected as javadoc
> warning, triggers failure
> -------------------------------------------------------------------------------------------------
>
> Key: MJAVADOC-538
> URL: https://issues.apache.org/jira/browse/MJAVADOC-538
> Project: Maven Javadoc Plugin
> Issue Type: Bug
> Affects Versions: 3.0.1
> Environment: Maven 3.5.4
> Java 1.8.0_181
> Reporter: Yoann Rodière
> Priority: Major
>
> When an environment variable {{_JAVA_OPTIONS}} or {{JAVA_TOOL_OPTIONS}} is
> defined, every JVM that starts will output a message to inform users of these
> options being picked up:
> {noformat}
> $ export JAVA_TOOL_OPTIONS=-Dfoo
> $ java -version
> Picked up JAVA_TOOL_OPTIONS: -Dfoo
> java version "1.8.0_181"
> Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
> Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode){noformat}
> Apparently this message cannot be suppressed, that's on purpose an won't
> change: [https://bugs.openjdk.java.net/browse/JDK-8039152]
>
> Unfortunately, this message seems to be interpreted by the
> maven-javadoc-plugin as a warning:
> {noformat}
> [INFO] --- maven-javadoc-plugin:3.0.1:javadoc-no-fork (generate-javadoc) @
> hibernate-search-util-internal-common ---
> [INFO] The goal 'org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:javadoc'
> has not been previously called for the module:
> 'org.hibernate.search:hibernate-search-util-internal-test:jar:6.0.0-SNAPSHOT'.
> Trying to invoke it...
> [WARN] Maven will be executed in interactive mode, but no input stream has
> been configured for this MavenInvoker instance.
> Picked up JAVA_TOOL_OPTIONS: -Dfoo
> [WARNING] Creating fake javadoc directory to prevent repeated invocations:
> /home/yrodiere/workspaces/main/hibernate-search-parent/util/internal/test/target/site/apidocs
> [ERROR] Error fetching link:
> /home/yrodiere/workspaces/main/hibernate-search-parent/util/internal/test/target/site/apidocs/package-list.
> Ignored it.
> [WARNING] Javadoc Warnings
> [WARNING] Picked up JAVA_TOOL_OPTIONS: -Dfoo
> {noformat}
> (see the last line, the message appears in the list of warnings)
> No big deal... until you enable the
> [failOnWarnings|https://maven.apache.org/plugins/maven-javadoc-plugin/javadoc-no-fork-mojo.html#failOnWarnings]
> option. Then the whole build will fail just because some JVM detected an
> environment variable...
> I couldn't find any workaround, except disabling the {{failOnWarnings}}
> options, but that's more a surrender than a workaround.
> Note that the definition of {{_JAVA_OPTIONS}} or {{JAVA_TOOL_OPTIONS}} is not
> exactly an exotic use case, especially on Continuous Integration platforms.
> [Travis CI uses {{_JAVA_OPTIONS}}
> |https://docs.travis-ci.com/user/build-environment-updates/2017-09-06/#added]
> to set JVM memory limits in its containerized environments, and [the Jenkins
> CI Pipeline Maven plugin uses
> {{JAVA_TOOL_OPTIONS}}|https://wiki.jenkins.io/display/JENKINS/Pipeline+Maven+Plugin#PipelineMavenPlugin-WhydoIseemessages%22[WARNING]PickedupJAVA_TOOL_OPTIONS...%22inthebuildlogs?]
> to pass options to Maven processes transparently.
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