Uploaded image for project: 'Jenkins'
  1. Jenkins
  2. JENKINS-17330

FilePath.installIfNecessaryFrom routes download over remoting channel

      Installing a large downloaded tool on a network slave can be quite slow:

      "Executor #... for ... : executing ... #... / waiting for hudson.remoting.Channel@...:HTTP full-duplex channel ..." Id=... Group=main TIMED_WAITING on hudson.remoting.UserRequest@...
      	at java.lang.Object.wait(Native Method)
      	-  waiting on hudson.remoting.UserRequest@...
      	at hudson.remoting.Request.call(Request.java:146)
      	at hudson.remoting.Channel.call(Channel.java:672)
      	at hudson.FilePath.act(FilePath.java:831)
      	at hudson.FilePath.act(FilePath.java:824)
      	at hudson.FilePath.unzipFrom(FilePath.java:485)
      	at hudson.FilePath.installIfNecessaryFrom(FilePath.java:718)
      	at hudson.tools.DownloadFromUrlInstaller.performInstallation(DownloadFromUrlInstaller.java:72)
      	at com.soasta.jenkins.MakeAppTouchTestableInstaller.performInstallation(MakeAppTouchTestableInstaller.java:49)
      	at com.soasta.jenkins.MakeAppTouchTestable.perform(MakeAppTouchTestable.java:94)
      	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
      	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:728)
      	at hudson.model.Build$BuildExecution.build(Build.java:199)
      	at hudson.model.Build$BuildExecution.doRun(Build.java:160)
      	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:510)
      	at hudson.model.Run.execute(Run.java:1505)
      	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
      	at hudson.model.ResourceController.execute(ResourceController.java:88)
      	at hudson.model.Executor.run(Executor.java:237)
      

      JENKINS-7813 is partly to blame, but the main issue here is that the URL is being opened on master, a RemoteInputStream constructed, and the archive unpacked on the slave. It would be much faster to open the URL directly from the slave and use the remoting channel only for control.

      In typical cases the slave can access a tool URL. There are some rarer cases where it is really intentional that the URL is resolved from the master; it might be a file-protocol URL, the slave might have no public internet access, the download location might be limited to particular IPs, etc. So installIfNecessaryFrom should first try to open from the slave, then fall back to the current implementation.

          [JENKINS-17330] FilePath.installIfNecessaryFrom routes download over remoting channel

          Jesse Glick created issue -
          SCM/JIRA link daemon made changes -
          Resolution New: Fixed [ 1 ]
          Status Original: Open [ 1 ] New: Resolved [ 5 ]
          vjuranek made changes -
          Labels Original: lts-candidate performance New: 1.509.1-fixed lts-candidate performance
          vjuranek made changes -
          Labels Original: 1.509.1-fixed lts-candidate performance New: 1.509.1-fixed performance
          Jesse Glick made changes -
          Link New: This issue is related to JENKINS-18664 [ JENKINS-18664 ]
          R. Tyler Croy made changes -
          Workflow Original: JNJira [ 148164 ] New: JNJira + In-Review [ 192751 ]

            jglick Jesse Glick
            jglick Jesse Glick
            Votes:
            0 Vote for this issue
            Watchers:
            5 Start watching this issue

              Created:
              Updated:
              Resolved: