I just have copied hadoop-eclipse-plugin-1.0.3.jar to the eclipse/plugins directory in order to get things going. But unfortunately it did not work for me. When I tried to connect eclipse to my Hadoop Version 1.1.1 cluster it threw this error :
An internal error occurred during: "Map/Reduce location status updater".
org/codehaus/jackson/map/JsonMappingException
you get this error because there are some jars missing from the plugin which comes along with the hadoop distribution. you need to add these required jars and re-jar the plugin in order to make it work. you might find this link helpful, wherein i have tried to show the entire procedure.
Related
So I keep getting this error when trying to run my program:
Error occurred during initialization of boot layer
java.lang.module.FindException: Module javafx.controls not found
I'm using a mac with eclipse, and my VM argument is:
--module-path /Users/myname/Desktop/javafx-sdk-11.0.2_3/lib --add-modules javafx.controls,javafx.fxml
I've tried everything, javafx.controls.jar and the other .jar file are in my lib folder. I've reinstalled the javafx program, changed my file path around hundreds of times, and I've tried to install plugins. Does anyone have any idea as too what can be happening? JavaFX is also an added library in my project, and all the .jar files assocated with it are added to it. Please let me know if anyone has an idea. Best!
I had success with the following additional step.
In the Run Configuration->Dependencies tab, click the "ModulePath" and then add the JavaFX JDK's jars (or the /lib folder that holds the jars) to the list.
You can inspect the generated command line, and check that these are included in the -p option.
IDK why this step should be needed. I would think Eclipse should be smart enough to include something on the dependency module path if it were in the project's Build Path Library list.
I have questions about this at eclipse.org and gluon. Maybe there will be an explanation, or fix so that this step isn't needed, or an edit to the documentation to let us know we need to do this.
I am trying to generate webservice client using axix2 on Eclipse
so I followed the tutorial here.
but at the last step when clicking finish, I am getting the error:
Exception occurred during code generation for WSDL : javax.xml.stream.FactoryConfigurationError: Requested factory com.ctc.wstx.stax.WstxOutputFactory cannot be located. Classloader =org.eclipse.osgi.internal.framework.ContextFinder#2de030
So I downloaded wstx-asl-4.0.0.jar and added it to the build path of the project, but still keep getting same error.
How can I fix this issue?
I ve got the same issue but:
I place the jar in WEB-INF/lib , check that it is also in build path
and restart eclipse
Without restarting eclipse I was stucked like you.
Hope that help
I am pretty new to hadoop & ubuntu so please bear with me. I find it very inconvenient to compile my hadoop .java files from command line. So I have created an eclipse project & imported all the hadoop libraries so that the eclipse does not throw any reference errors. And it does not. However when I run the files as a standalone java application I get the following error
WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
I am running on ubuntu and I have researched this problem elsewhere on web. I do not expect to see this error since the only difference is that I am running it within eclipse and not from command line. Where I am going wrong. Is there a specific way in which I need to add hadoop dependencies to my hello world hadoop projects? Will a simple buildpath configuration and importing of the necessary libraries not suffice? Appreciate all your responses.
you can try right-clicking the Project, ->Build Path -> Configure Build Path
Go to your src folder, point to "Native Library", then edit the location to the location of your hadoop native library folder (normally: ~/hadoop-x.x.x/lib/native/"folder-depending-on-your-system")
It is a warning and not an error which tells you that there is some problem in loading the native libraries which Hadoop makes use of. It should not have any negative impact on your job's output though. Remember Hadoop has native implementations of certain components for performance reasons and for non-availability of Java implementations. On the *nix platforms the library is named libhadoop.so. Using Eclipse doesn't make any difference the way Hadoop works. It's just that your Eclipse is unable to load the native libraries due to some reasons.
One possible reason might be that there is some problem with your java.library.path. You can configure Eclipse to load the proper libraries by configuring the build path as per your environment. To know more about Hadoop's native libraries, and how to build and use them you can visit this link.
I followed the steps using this site : http://wiki.apache.org/nutch/RunNutchInEclipse
I encountered a problem while running which that says
Exception in thread "main" java.lang.Error: Unresolved compilation problems:
String cannot be resolved to a type
Exception cannot be resolved to a type
System cannot be resolved
at org.apache.nutch.crawl.Crawl.main(Crawl.java:53)
The build was successful.
I am using nutch 1.4.
Moreover, I would like to tell that i didnt understood the point 3 of section "Establish the Eclipse environment for Nutch" and skipped it. I guess the problem lies there only.
Can you please help me as the more I try to resolve it, the more i get frustrated.Trying it from past 2 days.
It's a humble request please help.
Do you want it to run from eclipse? AFAIK only if you want to modify Nutch code it makes sense to run from eclipse and do all set up. In case if you want to run from eclipse for some reason, 3rd point means: You need to add those path. i.e within plugin folder there are many other folder. You need to manually expand each folder and add src/test and src/java. Ex: there is folder called creative commons. In that there src and within that there is java and test folder. You need to select both. Similarly do for all directories within plugin folder.
i am using eclipse 3.5 to create a simple plugin bearing an extension point. i built it using headless pde build via ant. the plugin functions properly. i then proceeded to test its extension point by placing my plugin jar into eclipse_home/dropins with intention of eventually creating an extension. but after i start eclipse, i get the following error in its log:
!ENTRY org.eclipse.equinox.p2.core 4 0 2012-03-22 01:00:45.270
!MESSAGE Provisioning exception
!STACK 1
org.eclipse.equinox.internal.provisional.p2.core.ProvisionException: No repository found at file:/C:/eclipse35/dropins/MyPlugin/.
at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.fail(AbstractRepositoryManager.java:380)
at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:641)
at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:88)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.loadMetadataRepository(Activator.java:90)
at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.getMetadataRepository(DropinsRepositoryListener.java:184)
at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.addRepository(DropinsRepositoryListener.java:79)
at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.added(DropinsRepositoryListener.java:57)
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.DirectoryWatcher.processFile(DirectoryWatcher.java:200)
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.DirectoryWatcher.scanDirectories(DirectoryWatcher.java:161)
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.DirectoryWatcher.poll(DirectoryWatcher.java:108)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.watchDropins(Activator.java:491)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start(Activator.java:167)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:782)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:773)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:754)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:352)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:370)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1068)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:557)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:464)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:248)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:445)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:220)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:330)
i have tried both just placing the plugin jar directly in the dropins directory, as well as using the following directory structure: eclipse_home/dropins/MyPlugin/plugins/myplugin.jar. both approaches work just fine with 3rd party plugins, but not with mine. please let me know what i am doing wrong. thank you!
It seems like two problems. The "no repository found" error message looks like this problem. And then there is the issue with your plugin not starting.
First you should check if the plugin is found.
Then you should check if the plugin is resolved, i.e if all requirements are fulfilled.
If you have the plugin development version of Eclipse, then you can open the plugin registry view. See if your plugin is in the list, if so, then the atleast it has been found. Then right click on it, enable advanced operations, and after that choose diagnose. Some requirement has probably not been fulfilled.
If you dont have the Plugin version of Eclipse, you can use the osgi console. Go to console view, and choose OSGI console in the view menu.
Run command ss to list all plugins, and diag 123 where the number is the id of your plugin to diagnose it.
Also, see a previous answer to a similar question
Edit: Oh, and I have been having some serious problems getting plugins placed in the dropins catalog to work at times... You could try to copy it to the eclipse/plugins catalog directly.