devstudio.product_master Job on Jenkins is failing: cannot find javac

8:20:58 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.8:run (install) on project installer: An Ant BuildException has occured: The following error occurred while executing this line:
18:20:58 [ERROR] /mnt/hudson_workspace/workspace/devstudio.product_master/sources/product/installer/build.xml:82: Unable to find a javac compiler;
18:20:58 [ERROR] com.sun.tools.javac.Main is not on the classpath.
18:20:58 [ERROR] Perhaps JAVA_HOME does not point to the JDK.
18:20:58 [ERROR] It is currently set to "/qa/tools/opt/x86_64/openjdk-1.8.0.191.b12/jre"
18:20:58 [ERROR] around Ant part ...<ant antfile="build.xml">... @ 4:28 in /mnt/hudson_workspace/workspace/devstudio.product_master/sources/product/installer/target/antrun/build-main.xml
18:20:58 [ERROR] -> [Help 1]
18:20:58 org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.8:run (install) on project installer: An Ant BuildException has occured: The following error occurred while executing this line:
18:20:58 /mnt/hudson_workspace/workspace/devstudio.product_master/sources/product/installer/build.xml:82: Unable to find a javac compiler;
18:20:58 com.sun.tools.javac.Main is not on the classpath.
18:20:58 Perhaps JAVA_HOME does not point to the JDK.
18:20:58 It is currently set to "/qa/tools/opt/x86_64/openjdk-1.8.0.191.b12/jre"
18:20:58 around Ant part ...<ant antfile="build.xml">... @ 4:28 in /mnt/hudson_workspace/workspace/devstudio.product_master/sources/product/installer/target/antrun/build-main.xml
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
18:20:58     at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
18:20:58     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
18:20:58     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
18:20:58     at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
18:20:58     at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
18:20:58     at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
18:20:58     at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
18:20:58     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
18:20:58     at java.lang.reflect.Method.invoke (Method.java:498)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
18:20:58 Caused by: org.apache.maven.plugin.MojoExecutionException: An Ant BuildException has occured: The following error occurred while executing this line:
18:20:58 /mnt/hudson_workspace/workspace/devstudio.product_master/sources/product/installer/build.xml:82: Unable to find a javac compiler;
18:20:58 com.sun.tools.javac.Main is not on the classpath.
18:20:58 Perhaps JAVA_HOME does not point to the JDK.
18:20:58 It is currently set to "/qa/tools/opt/x86_64/openjdk-1.8.0.191.b12/jre"
18:20:58 around Ant part ...<ant antfile="build.xml">... @ 4:28 in /mnt/hudson_workspace/workspace/devstudio.product_master/sources/product/installer/target/antrun/build-main.xml
18:20:58     at org.apache.maven.plugin.antrun.AntRunMojo.execute (AntRunMojo.java:342)
18:20:58     at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
18:20:58     at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
18:20:58     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
18:20:58     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
18:20:58     at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
18:20:58     at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
18:20:58     at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
18:20:58     at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
18:20:58     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
18:20:58     at java.lang.reflect.Method.invoke (Method.java:498)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
18:20:58 Caused by: org.apache.tools.ant.BuildException: The following error occurred while executing this line:
18:20:58 /mnt/hudson_workspace/workspace/devstudio.product_master/sources/product/installer/build.xml:82: Unable to find a javac compiler;
18:20:58 com.sun.tools.javac.Main is not on the classpath.
18:20:58 Perhaps JAVA_HOME does not point to the JDK.
18:20:58 It is currently set to "/qa/tools/opt/x86_64/openjdk-1.8.0.191.b12/jre"
18:20:58     at org.apache.tools.ant.ProjectHelper.addLocationToBuildException (ProjectHelper.java:508)
18:20:58     at org.apache.tools.ant.taskdefs.Ant.execute (Ant.java:418)
18:20:58     at org.apache.tools.ant.UnknownElement.execute (UnknownElement.java:288)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
18:20:58     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
18:20:58     at java.lang.reflect.Method.invoke (Method.java:498)
18:20:58     at org.apache.tools.ant.dispatch.DispatchUtils.execute (DispatchUtils.java:106)
18:20:58     at org.apache.tools.ant.Task.perform (Task.java:348)
18:20:58     at org.apache.tools.ant.Target.execute (Target.java:357)
18:20:58     at org.apache.tools.ant.Target.performTasks (Target.java:385)
18:20:58     at org.apache.tools.ant.Project.executeSortedTargets (Project.java:1337)
18:20:58     at org.apache.tools.ant.Project.executeTarget (Project.java:1306)
18:20:58     at org.apache.maven.plugin.antrun.AntRunMojo.execute (AntRunMojo.java:313)
18:20:58     at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
18:20:58     at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
18:20:58     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
18:20:58     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
18:20:58     at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
18:20:58     at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
18:20:58     at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
18:20:58     at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
18:20:58     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
18:20:58     at java.lang.reflect.Method.invoke (Method.java:498)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
18:20:58 Caused by: org.apache.tools.ant.BuildException: Unable to find a javac compiler;
18:20:58 com.sun.tools.javac.Main is not on the classpath.
18:20:58 Perhaps JAVA_HOME does not point to the JDK.
18:20:58 It is currently set to "/qa/tools/opt/x86_64/openjdk-1.8.0.191.b12/jre"
18:20:58     at org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler (CompilerAdapterFactory.java:108)
18:20:58     at org.apache.tools.ant.taskdefs.Javac.compile (Javac.java:1058)
18:20:58     at org.apache.tools.ant.taskdefs.Javac.execute (Javac.java:882)
18:20:58     at org.apache.tools.ant.UnknownElement.execute (UnknownElement.java:288)
18:20:58     at sun.reflect.GeneratedMethodAccessor62.invoke (Unknown Source)
18:20:58     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
18:20:58     at java.lang.reflect.Method.invoke (Method.java:498)
18:20:58     at org.apache.tools.ant.dispatch.DispatchUtils.execute (DispatchUtils.java:106)
18:20:58     at org.apache.tools.ant.Task.perform (Task.java:348)
18:20:58     at org.apache.tools.ant.Target.execute (Target.java:357)
18:20:58     at org.apache.tools.ant.Target.performTasks (Target.java:385)
18:20:58     at org.apache.tools.ant.Project.executeSortedTargets (Project.java:1337)
18:20:58     at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets (SingleCheckExecutor.java:38)
18:20:58     at org.apache.tools.ant.Project.executeTargets (Project.java:1189)
18:20:58     at org.apache.tools.ant.taskdefs.Ant.execute (Ant.java:416)
18:20:58     at org.apache.tools.ant.UnknownElement.execute (UnknownElement.java:288)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
18:20:58     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
18:20:58     at java.lang.reflect.Method.invoke (Method.java:498)
18:20:58     at org.apache.tools.ant.dispatch.DispatchUtils.execute (DispatchUtils.java:106)
18:20:58     at org.apache.tools.ant.Task.perform (Task.java:348)
18:20:58     at org.apache.tools.ant.Target.execute (Target.java:357)
18:20:58     at org.apache.tools.ant.Target.performTasks (Target.java:385)
18:20:58     at org.apache.tools.ant.Project.executeSortedTargets (Project.java:1337)
18:20:58     at org.apache.tools.ant.Project.executeTarget (Project.java:1306)
18:20:58     at org.apache.maven.plugin.antrun.AntRunMojo.execute (AntRunMojo.java:313)
18:20:58     at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
18:20:58     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
18:20:58     at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
18:20:58     at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
18:20:58     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
18:20:58     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
18:20:58     at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
18:20:58     at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
18:20:58     at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
18:20:58     at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
18:20:58     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
18:20:58     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
18:20:58     at java.lang.reflect.Method.invoke (Method.java:498)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
18:20:58     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
18:20:58 [ERROR] 
18:20:58 [ERROR] Re-run Maven using the -X switch to enable full debug logging.
18:20:58 [ERROR] 
18:20:58 [ERROR] For more information about the errors and possible solutions, please read the following articles:
18:20:58 [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
18:20:58 [ERROR] 
18:20:58 [ERROR] After correcting the problems, you can resume the build with the command
18:20:58 [ERROR]   mvn <goals> -rf :installer