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  1. Jenkins
  2. JENKINS-11743

selenium plugin -- slaves/remote control servers stay in "in use" status even they are not really "in use"

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    Details

    • Type: Bug
    • Status: Resolved (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Component/s: selenium-plugin
    • Labels:
      None
    • Environment:
      jenkins 1.437
      selenium plugin 1.4
      OS: CentOS release 5.7 (Final)
    • Similar Issues:

      Description

      I have been running into this problem ever since I switched to use the jenkins selenium plugin as my grid. After the grid has been running for a while, the slaves/rc servers which are connected to the grid start to appear as "in use". When I logged on to the rc servers to check whether they are actually "in use", they were actually idle with the browser windows still open but not doing anything. I checked the RC log and it usually stuck at "Slave successfully connected":

      JNLP agent connected from /10.1.104.72
      <===[JENKINS REMOTING CAPACITY]===>Slave.jar version: 2.11
      This is a Windows slave
      Copied maven-agent.jar
      Copied maven3-agent.jar
      Copied maven3-interceptor.jar
      Copied maven-interceptor.jar
      Copied maven2.1-interceptor.jar
      Copied plexus-classworld.jar
      Copied classworlds.jar
      Slave successfully connected and online

      When this happens, it happens to all the RCs. I have to restart the jenkins server to get out of this "in use" state.

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          darkrift Richard Lavoie added a comment -

          The problem is not solely related to the jenkins plugin. If your tests don't close/quit the browser at the end, selenium nodes think they are still having a session which is what jenkins plugin uses to validate if it's in use.

          Thankfully, there is actually a way to tell the nodes to close the browsers when they didn't receive a command after a while thus closing dangling sessions/browsers. The current plugin doesn't support that option yet (-timeout) but there is an an opened issue I'm currently working on to improve node configurations which will include that option. See https://issues.jenkins-ci.org/browse/JENKINS-12463

          Show
          darkrift Richard Lavoie added a comment - The problem is not solely related to the jenkins plugin. If your tests don't close/quit the browser at the end, selenium nodes think they are still having a session which is what jenkins plugin uses to validate if it's in use. Thankfully, there is actually a way to tell the nodes to close the browsers when they didn't receive a command after a while thus closing dangling sessions/browsers. The current plugin doesn't support that option yet (-timeout) but there is an an opened issue I'm currently working on to improve node configurations which will include that option. See https://issues.jenkins-ci.org/browse/JENKINS-12463
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          darkrift Richard Lavoie added a comment -

          Should not happen anymore with the timeout option from selenium grid.

          Latest version v2.1 now includes selenium 2.25 which would take care of the timeout of the sessions.

          Show
          darkrift Richard Lavoie added a comment - Should not happen anymore with the timeout option from selenium grid. Latest version v2.1 now includes selenium 2.25 which would take care of the timeout of the sessions.

            People

            Assignee:
            darkrift Richard Lavoie
            Reporter:
            hinling hinling yeung
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              Dates

              Created:
              Updated:
              Resolved: