[Building Sakai] multi threaded maven builds causing random compilation errors

Wed Jan 30 07:13:57 PST 2013

I have not been able to get multithreading working using this on an i7 MacBook Pro:

java version "1.6.0_37"
Java(TM) SE Runtime Environment (build 1.6.0_37-b06-434-11M3909)
Java HotSpot(TM) 64-Bit Server VM (build 20.12-b01-434, mixed mode)

Whether I do –T 2C or –T 4, I always get errors. Here's the most recent, using –T 4 for a recent pull off the sakai 2.9.x trunk:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project sakai-site-manage-group-helper: Compilation failure: Compilation failure:
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupListProducer.java:[93,76] ')' expected
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupListProducer.java:[93,126] ')' expected
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupListProducer.java:[93,100] not a statement
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupListProducer.java:[93,128] not a statement
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupListProducer.java:[93,132] ';' expected
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupEditProducer.java:[157,10] not a statement
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupEditProducer.java:[157,13] ';' expected
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupEditProducer.java:[162,10] 'catch' without 'try'
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupEditProducer.java:[162,26] ')' expected
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupEditProducer.java:[162,16] not a statement
[ERROR] /opt/sakai-2.9.x-src/site-manage/site-manage-group-helper/tool/src/java/org/sakaiproject/site/tool/helper/managegroup/rsf/GroupEditProducer.java:[162,28] ';' expected
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project sakai-site-manage-group-helper: Compilation failure
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:167)
at org.apache.maven.lifecycle.internal.LifecycleThreadedBuilder$1.call(LifecycleThreadedBuilder.java:164)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:656)
at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:128)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 13 more

--
David Poindexter
Systems Analyst
Enterprise Student Systems
UITS
Indiana University
535 West Michigan Street
Indianapolis, IN 46202-5157
O: 317.274.8686
W: http://uits.iu.edu<http://uits.iu.edu/>

From: Sam Ottenhoff <ottenhoff at longsight.com<mailto:ottenhoff at longsight.com>>
Date: Wednesday, January 30, 2013 9:28 AM
To: Steve Swinsburg <steve.swinsburg at gmail.com<mailto:steve.swinsburg at gmail.com>>
Cc: Sakai Dev <sakai-dev at collab.sakaiproject.org<mailto:sakai-dev at collab.sakaiproject.org>>
Subject: Re: [Building Sakai] multi threaded maven builds causing random compilation errors

Yeah, multi-threaded mode works well for me.  I use -T 4 , JDK 1.6.0_35 on Windows x64, skipping Maven tests.  Total build time is 4 mins for sakai-trunk-all (no adobeconnect).

--Sam

On Wed, Jan 30, 2013 at 8:14 AM, Steve Swinsburg <steve.swinsburg at gmail.com<mailto:steve.swinsburg at gmail.com>> wrote:
Hi all,

Does anyone else run Maven 3 in multi threaded mode?

I thought I should do something with the abundance of cores on this machine so setup my build to run in multi threaded mode, but I now randomly get class compilation errors or actual JVM compiler errors. There is actually nothing wrong with the class. And its always a different file and the file compiles perfectly fine without the multithreaded build turned on. And sometimes it compiles just fine *with* it turned on!

Example:

All run on the adobeconnect project, all taken as the last line of the error:

mvn -T 1C clean install
...
[ERROR] /Users/steve/dev/sakai/src/extra/adobeconnect/openmeetings/src/java/org/sakaiproject/videoconference/openmeetings/service/axis/services/AddRoomWithModerationAndQuestions.java:[700,44] class, interface, or enum expected

mvn -T 1C clean install
...
[ERROR] /Users/steve/dev/sakai/src/extra/adobeconnect/openmeetings/src/java/org/sakaiproject/videoconference/openmeetings/service/axis/services/CloseRoom.java:[471,110] package org.java.l.axis2.databinding.utils does not exist

Then a build as single threaded:

mvn clean install

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 9.337s
[INFO] Finished at: Thu Jan 31 00:11:27 EST 2013
[INFO] Final Memory: 19M/2177M
[INFO] ------------------------------------------------------------------------

Then a JVM compiler error:

mvn -T 1C clean install
...
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project adobeconnect-tool: Compilation failure
[ERROR] Failure executing javac, but could not parse the error:
[ERROR] An exception has occurred in the compiler (1.6.0_37). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.
[ERROR] com.sun.tools.javac.code.Symbol$CompletionFailure: class file for java.lang.annotation.RetentionPolicy not found

I wonder if its the JDK version?

cheers,
Steve

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