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  1. Jenkins
  2. JENKINS-43630

GitSCM: First Build on New PR fails

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    Description

      Whenever a new PR gets created and the first build that is executed with that PR it will fail 100% of the time with the following behavior:

      At the end of the successful merge we get a NPE that is a result from the similarTo check that happens here (the recent change)
      https://github.com/jenkinsci/git-plugin/commit/b8f94dfed07e996e87dff4f27615bc82ff8103c3#diff-f1f2ff967f38c8b53a4901be3169035eR1109

       

      Here's my build log:

      18:21:45 Wiping out workspace first.
      18:21:45 Cloning the remote Git repository
      18:21:45 Cloning repository git@code.espn.com:dp-ops/dp-jenkins-sandbox.git
      18:21:45  > git init /var/lib/jenkins/workspace/ps_dp-jenkins-sandbox_PR-14-WU33IOH5B3HOCHSTNEOQ2GG7WJSK42NQPL2GSQDVQOCQ24WHHOEQ # timeout=10
      18:21:45 Fetching upstream changes from git@code.espn.com:dp-ops/dp-jenkins-sandbox.git
      18:21:45  > git --version # timeout=10
      18:21:45 using GIT_SSH to set credentials Gadget-Gadget (gadget_id_rsa)
      18:21:45  > git fetch --tags --progress git@code.espn.com:dp-ops/dp-jenkins-sandbox.git +refs/heads/*:refs/remotes/origin/*
      18:21:46  > git config remote.origin.url git@code.espn.com:dp-ops/dp-jenkins-sandbox.git # timeout=10
      18:21:46  > git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
      18:21:46  > git config remote.origin.url git@code.espn.com:dp-ops/dp-jenkins-sandbox.git # timeout=10
      18:21:46 Fetching upstream changes from git@code.espn.com:dp-ops/dp-jenkins-sandbox.git
      18:21:46 using GIT_SSH to set credentials Gadget-Gadget (gadget_id_rsa)
      18:21:46  > git fetch --tags --progress git@code.espn.com:dp-ops/dp-jenkins-sandbox.git +refs/heads/*:refs/remotes/origin/*
      18:21:46  > git config remote.origin1.url git@code.espn.com:dp-ops/dp-jenkins-sandbox.git # timeout=10
      18:21:46 Fetching upstream changes from git@code.espn.com:dp-ops/dp-jenkins-sandbox.git
      18:21:46 using GIT_SSH to set credentials Gadget-Gadget (gadget_id_rsa)
      18:21:46  > git fetch --tags --progress git@code.espn.com:dp-ops/dp-jenkins-sandbox.git +refs/pull/*/head:refs/remotes/origin/pr/*
      18:21:47 Merging master commit 81d267352ea18649976be512d0b510d549d8a4d5 into PR head commit dfe36150a1415afe6baaa266705babce0843a5d3
      18:21:47  > git config core.sparsecheckout # timeout=10
      18:21:47  > git checkout -f dfe36150a1415afe6baaa266705babce0843a5d3
      18:21:47  > git merge 81d267352ea18649976be512d0b510d549d8a4d5 # timeout=10
      18:21:47  > git rev-parse HEAD^{commit} # timeout=10
      18:21:47 Merge succeeded, producing dfe36150a1415afe6baaa266705babce0843a5d3
      [Pipeline] }
      [Pipeline] // stage
      [Pipeline] echo
      18:21:47 Exception in pipeline: java.lang.NullPointerException
      [Pipeline] fileExists
      [Pipeline] stage
      [Pipeline] { (BuildFailure)
      [Pipeline] echo
      18:21:47 Loading ./build-scripts/buildfailure.groovy
      

      and finally the exception that we print

      java.lang.NullPointerException
      	at hudson.plugins.git.util.BuildData.normalize(BuildData.java:307)
      	at hudson.plugins.git.util.BuildData.similarTo(BuildData.java:346)
      	at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1109)
      	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:109)
      	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:83)
      	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:73)
      	at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1$1.call(AbstractSynchronousNonBlockingStepExecution.java:47)
      	at hudson.security.ACL.impersonate(ACL.java:221)
      	at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1.run(AbstractSynchronousNonBlockingStepExecution.java:44)
      	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
      	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      	at java.lang.Thread.run(Thread.java:745)
      Finished: FAILURE

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            markewaite Mark Waite
            shawnchasse Shawn Chasse
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              Created:
              Updated:
              Resolved: