maven-assembly-plugin error: No formats specified in the execution parameters or the assembly descriptor

Build Error log:

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:55 min
[INFO] Finished at: 2017-07-03T09:37:42+02:00
[INFO] Final Memory: 186M/444M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.4.1:single (default) on project mycomponent: No formats specified in the execution parameters or the assembly descriptor. -> [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 <goals> -rf :mycomponent
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:39 min
[INFO] Finished at: 2017-07-03T09:37:43+02:00
[INFO] Final Memory: 17M/90M
[INFO] ------------------------------------------------------------------------

Solution:

The maven-assembly-plugin version 2.4.1 is affect of a bug. I found the following apache issue jira in https://issues.apache.org/jira/browse/FALCON-1898. This is issue regards the version 2.6 but I think the same bug. You can use an other plugin version, I used the version 2.2 to fix it. 

<plugin>

    <groupId>org.apache.maven.plugins</groupId>

    <artifactId>maven-assembly-plugin</artifactId>

    <version>2.2</version>

    <executions>

       .....

    </executions>

</plugin>    

Maven compilation error - java.lang.IllegalStateException: endPosTable already set

Error stack trace:

java.lang.IllegalStateException: endPosTable already set
        at com.sun.tools.javac.util.DiagnosticSource.setEndPosTable(DiagnosticSource.java:136)
        at com.sun.tools.javac.util.Log.setEndPosTable(Log.java:350)
        at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:667)
        at com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:950)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.<init>(JavacProcessingEnvironment.java:892)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.next(JavacProcessingEnvironment.java:921)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1187)
        at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856)
        at com.sun.tools.javac.main.Main.compile(Main.java:523)
        at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
        at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
        at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:125)
        at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:169)
        at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:823)
        at org.apache.maven.plugin.compiler.TestCompilerMojo.execute(TestCompilerMojo.java:153)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
        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.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
    [INFO] -------------------------------------------------------------
    [ERROR] COMPILATION ERROR : 
    [INFO] -------------------------------------------------------------
    [ERROR] An unknown compilation problem occurred
    [INFO] 1 error
    [INFO] -------------------------------------------------------------
    [INFO] ------------------------------------------------------------------------
    [INFO] Reactor Summary:

Solution:

A better solution is the usage of useIncrementalCompilation option in compiler plugin configuration as below:

    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>${maven-compiler-plugin.version}</version>
        <configuration>
          <compilerVersion>1.8</compilerVersion>
          <source>1.8</source>
          <target>1.8</target>
          <useIncrementalCompilation>false</useIncrementalCompilation>
          <compilerArgs>
            <arg>-Xlint:deprecation</arg>
            <arg>-Xlint:unchecked</arg>
          </compilerArgs>
        </configuration>
    </plugin>

Technology stack:

• Apache Maven 3.3.9
• Jdk 1.8.0_73