[ 
https://issues.apache.org/jira/browse/YARN-9398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16795995#comment-16795995
 ] 

Daniel Templeton commented on YARN-9398:
----------------------------------------

I'm seeing a ton of errors in the javadoc when I do a dist build, and they're 
not the ones you're seeing:

{noformat}[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:jar (module-javadocs) on 
project hadoop-yarn-server-nodemanager: MavenReportException: Error while 
generating Javadoc:
[ERROR] Exit code: 1 - Picked up _JAVA_OPTIONS: -Djava.awt.headless=true
[ERROR] 
/Users/daniel/NetBeansProjects/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/amrmproxy/AMRMProxyService.java:392:
 warning: no @param for credentials
[ERROR]   protected void initializePipeline(ApplicationAttemptId 
applicationAttemptId,
[ERROR]                  ^
[ERROR] 
/Users/daniel/NetBeansProjects/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/amrmproxy/FederationInterceptor.java:962:
 warning: no @param for homeResponse
[ERROR]   protected void reAttachUAMAndMergeRegisterResponse(
[ERROR]                  ^
[ERROR] 
/Users/daniel/NetBeansProjects/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/amrmproxy/FederationInterceptor.java:962:
 warning: no @param for appId
[ERROR]   protected void reAttachUAMAndMergeRegisterResponse(
[ERROR]                  ^
[ERROR] 
/Users/daniel/NetBeansProjects/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/amrmproxy/FederationInterceptor.java:1302:
 warning: no @return
[ERROR]   protected AllocateResponse generateBaseAllocationResponse() {
[ERROR]                              ^
[ERROR] 
/Users/daniel/NetBeansProjects/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/api/deviceplugin/DevicePlugin.java:30:
 warning: no description for @throws
[ERROR]    * @throws Exception
[ERROR]      ^

...

[ERROR]
[ERROR] Command line was: 
/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home/jre/../bin/javadoc
 @options @packages
[ERROR]
[ERROR] Refer to the generated Javadoc files in 
'/Users/daniel/NetBeansProjects/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/target/apidocs'
 dir.
[ERROR]
[ERROR] -> [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/MojoExecutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :hadoop-yarn-server-nodemanager
{noformat}

I never build with javadocs, so maybe those issues have been there a while 
without me noticing.  How come I don't see the errors shown in this JIRA but 
instead see different errors?

> Javadoc error on FPGA related java files
> ----------------------------------------
>
>                 Key: YARN-9398
>                 URL: https://issues.apache.org/jira/browse/YARN-9398
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Eric Yang
>            Assignee: Peter Bacsko
>            Priority: Major
>
> {code}
> [ERROR] 
> /home/eyang/test/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/AbstractFpgaVendorPlugin.java:46:
>  warning: no @param for conf
> [ERROR]   boolean initPlugin(Configuration conf);
> [ERROR]           ^
> [ERROR] 
> /home/eyang/test/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/AbstractFpgaVendorPlugin.java:46:
>  warning: no @return
> [ERROR]   boolean initPlugin(Configuration conf);
> [ERROR]           ^
> [ERROR] 
> /home/eyang/test/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/AbstractFpgaVendorPlugin.java:51:
>  warning: no @param for timeout
> [ERROR]   boolean diagnose(int timeout);
> [ERROR]           ^
> [ERROR] 
> /home/eyang/test/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/AbstractFpgaVendorPlugin.java:51:
>  warning: no @return
> [ERROR]   boolean diagnose(int timeout);
> [ERROR]           ^
> [ERROR] 
> /home/eyang/test/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/AbstractFpgaVendorPlugin.java:64:
>  warning: no @return
> [ERROR]   String getFpgaType();
> [ERROR]          ^
> [ERROR] 
> /home/eyang/test/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/FpgaDiscoverer.java:119:
>  warning: no @return
> [ERROR]   public List<FpgaResourceAllocator.FpgaDevice> discover()
> [ERROR]                                                 ^
> [ERROR] 
> /home/eyang/test/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/FpgaDiscoverer.java:119:
>  warning: no @throws for 
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.ResourceHandlerException
> [ERROR]   public List<FpgaResourceAllocator.FpgaDevice> discover()
> [ERROR]                                                 ^
> [ERROR] 
> /home/eyang/test/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/resourceplugin/fpga/IntelFpgaOpenclPlugin.java:156:
>  error: bad HTML entity
> [ERROR]    *  Helper class to run aocl diagnose & determine major/minor 
> numbers.
> {code}
> YARN-9266 introduced some javadoc compilation errors.



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