eclipse stuck when building workspace

Question

I am using eclipse 3 4 1 Java EE under Vista  It seems to like getting stuck when building my workspace  Canceling the build doesn t seem to do anything as well   Why is this happening and how do I fix the problem

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Step1   Open project directory and edit  project file  remove following lines to disable java script validation      lt buildCommand gt         lt name gt org eclipse wst jsdt core javascriptValidator lt  name gt         lt arguments gt         lt  arguments gt       lt  buildCommand gt    Save file   Step 2   Go to Eclipse installed directory and open eclipse ini or sts in if you have STS   change xms and xmx value based on your RAM size of your computer   -Xms512m -Xmx1024m -XX MaxPermSize 256m   OR  in windows  go to eclipse shortcut in desktop  right click- properties-  add following  C  software eclipse sts-3 6 2 RELEASE STS exe -clean -Xms512m -Xmx1024m  Run Eclipse   Go to Eclipse- windows- preference- Validation  enable Suspend all validators  Do this if you don t want do any validation listed in the list given in Validator panel

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In my case it helped to remove the source folders from my favorites in the Windows Explorer  Windows 8 0   It seems that the build was not actually stuck  but triggered in some kind of infinite loop  as mentioned here - Bug 342931

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None of the the answers here worked for me  What worked was to delete the following folder     C  Users your username workspace project   name metadata plugins org eclipse core resources projects project   name  indexes

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Refresh all the projects u want to build  Worked

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In case there is a problem on start when building your project disable the build automatically from menu  Project - gt  Build Automatically  This solved my problem while more sophisticated solutions could not

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eclipse -clean did not work but following did  eclipse -clean -clearPersistedState

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I faced the same problem when I tried to install Angular js with bower in my project  I seems bower has lots of javascript files it downloaded automatically which caused my IDE to stuck in validation process for a long time  So  I solved this problem this way     I first installed tern js 0 9 0  Then I went to the project properties  selected tern script path included only the path I needed for validation  My project s javascript folder  I excluded other path like placeholders  Angular js files  Jquery files  I selected the Javascript from the properties again and did the same things in include path s source    My IDE currently working without freezing  I took help from there  Tern I guess it can be helpful  where any IDE stuck due to lots of Javascript file

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You may want to take a look at How to report a deadlock  You may also want to check the Error view and or the error log   workspace   metadata  log   If that doesn t help  you ll probably need to include more info about which plugins you have installed and which projects you have  Can you create a minimal workspace which reproduces the problem

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The only solution for me  Luna 4 4 1  was this   Go to Project Properties   Builders and then uncheck the Javascript Validator

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Some time it s very helpful to execute eclipse from command line with  -clean  parameter to enforce it produce clean up for workspace

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Sometimes the problem seems to be fixed by killing other programs which have files open from the project folder

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Unselect automatic build using Eclipse-  Windows- Preferences helps fixing this issue

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I faced Similar issue in Eclipse Indigo  I changed the HeapSize it started working correctly  I just added following eclipse ini file  -vmargs -Xms1024m -Xmx1024m  It worked fine after increasing the VM size

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I was able to fix this with the following   First  exit Eclipse  Then temporarily move the following  projects folder to a safe location   mv  metadata  plugins org eclipse core resources  projects projects   Start and exit Eclipse  then move the  projects folder back to where it was originally   mv projects  metadata  plugins org eclipse core resources  projects   Use at your own risk  of course

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I just restarted eclipse and it started working the next time

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Restart eclipse   It worked for me several times

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Rather than debug and find the exact root cause s  for this  I just deleted the projects and the metadata folder   Eclipse will rebuild the  metadata file the next time it s launched   I then pulled in the latest project code and the problem was solved   It was more work as I had to reconfigure everything  including my servers  but build workspace had been stopping at 50  for anywhere from 3 to 5 minutes before it would completely finish  so it was worth the effort   Also  I ve found that with Eclipse  if you stop the build workspace before it completes and shut down Eclipse if that hangs up everything  you can really mess up your configuration and waste lots of time trying to get it stable again   I m using Eclipse Oxygen  but I ve had this happen in all the versions of Eclipse I ve used  so I really try to avoid it  if possible

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If you are using Maven as a build tool you might want to   Close eclipse  Delete dependency directories located in  m2 repository  - in Linux it s located under Home directory and in Windows it should be in c  Users lt YourUsername gt  m2  replace    with your username   Start Eclipse and enjoy normal work      That helped me resolve this issue and I hope it helps you too     Cheers  P S  I ve edited my answer  as  howlger asked  where it was also suggested to delete  eclipse and  p2 folders as it can do harm  although it did NOT in my case   I had to reinstall some of plugins I m using

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Eclipse often freezes for me at 44  if I m debugging Android over USB  When disconnecting the device  Eclipse starts

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I ve found that this might also happen if you rebuild a workspace with a project containing a lot of image data  such as a dedicated images project   Might be best to put something like that into its own workspace and handle it separately to the rest of the projects you deal with    If you can t  then don t clean that project when you clean and rebuild  Only rebuild when necessary

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The accepted answer allowed me to get Eclipse started again  but it seems that the projects lost their metadata   E g   all the Git Gradle Spring icons disappeared from the project names   I have a lot of projects in there  and I didn t want to have to import them all over again   So here s what worked for me under Kepler  YMMV but I wanted to record this just in case it helps somebody   Step 1  Temporarily move the  projects file out of the way     cd  metadata  plugins org eclipse core resources   mv  projects  projects bak   Step 2  Then start Eclipse  The metadata will be missing  but at least Eclipse starts without getting stuck   Step 3  Close Eclipse   Step 4  Revert the  projects bak file to its original name     mv  projects bak  projects   Step 5  Restart Eclipse  It may build some stuff  but this time it should get through   At least it did for me

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In my case problem arise after importing downloaded project - stuck at 80  build  Solved by adding write permissions for group to project s files  Ubuntu 12 04

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Looking at the logs in  workspace   metadata  log provided useful information for me  Turned out there was a java lang OutOfMemoryError  PermGen space error when the workspace build would hang  This can be edited in the eclipse ini or sts ini If you are using SpringSource Tool Suite  file

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Inside the project folder open  project file  There is a bad entry and it might help       lt buildCommand gt           lt name gt org eclipse m2e core maven2Builder lt  name gt           lt arguments gt           lt  arguments gt       lt  buildCommand gt

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I was able to solve this by removing extra folder that Eclipse had created in my eclipse installation folder  I didn t install and I was using Eclilpse Neon 3 with Spring Tool suite also installed  But  when I looked into extracted eclipse installation  I had C  folder which had some folder structure  It was mirror image of my Downloads folder  I removed it and restarted   It worked for me

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I just had the same problem   By using Task Manager to kill the build process and exiting Eclipse with no projects open  I was able to get back into Eclipse and clean the project without opening it   I then restarted Eclipse again loaded my project and all OK

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Deleting some of the JDT indexes  in  metadata plugins org eclipse jdt core   particularly the big files  often fix or ease the problem for me

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I have this problem whe I have too much maven projects open at once  What I tend to do is    Restart eclipse  sometimes I need to kill eclipse  Disable automatic build immediatly  project   uncheck Build automatically  Right click the project s  I want to have rebuild Close unrelated projects Re-enable automatic build   This enables a functioning rebuild in 99  off the cases in my workspace

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I tried lots of these suggestions  but the only thing that finally worked for me was creating a new workspace  and freshly checking out all my projects into that folder  Then it worked fine  -

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I had same issue with my Eclipse and as a solution  I created new project  copied all resources manually  using windows copy paste  to new project  deleted old project and that s it   Sometimes  this happens due to improper System shutdown and Eclipse workspace started facing similar issues   Hope it will work

[eclipse] eclipse stuck when building workspace

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