[JIRA] (JENKINS-54144) Job fails as JiraSCMListsener/JiraSite potentially creating Executor with 0 threads

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Matthew Kelly created an issue   Jenkins / JENKINS-54144 Job fails as JiraSCMListsener/JiraSite potentially creating Executor with 0 threads Issue Type: Bug Assignee: Unassigned Components: blueocean-plugin Created: 2018-10-18 13:24 Priority: Major Reporter: Matthew Kelly After the release of v1.9.0 for Blue Ocean Plugins, invoking a Multibranch Pipeline job from Stash using the URL for "Scan Multibranch Pipeline Now" causes a build to fail on SCM checkout. The failure is from JiraSCMListener: java.lang.IllegalArgumentException at java.util.concurrent.ThreadPoolExecutor.<init>(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.<init>(Unknown Source) at java.util.concurrent.Executors.newFixedThreadPool(Unknown Source) at hudson.plugins.jira.JiraSite.createSession(JiraSite.java:457) at hudson.plugins.jira.JiraSite.getSession(JiraSite.java:426) at io.jenkins.blueocean.service.embedded.jira.JiraSCMListener.onChangeLogParsed(JiraSCMListener.java:45) at org.jenkinsci.plugins.workflow.job.WorkflowRun.onCheckout(WorkflowRun.java:1050) at org.jenkinsci.plugins.workflow.job.WorkflowRun.access$1400(WorkflowRun.java:143) at org.jenkinsci.plugins.workflow.job.WorkflowRun$SCMListenerImpl.onCheckout(WorkflowRun.java:1253) at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:136) at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:144) at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:67) at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:303) at hudson.model.ResourceController.execute(ResourceController.java:97) at hudson.model.Executor.run(Executor.java:429) This seems to have occurred after the release of JENKINS-53320, potentially from this commit in JiraSite.java. From what I can see, the threadExecutorNumber is be supplied to the Executor as 0. This does look highly possible, as there are quite a lot of places that directly set the "this.threadExecutorNumber" without using the DEFAULT value to protect against 0s. There is a new "setThreadExecutorNumber" method within that commit, so the protection could be in there, and everything uses that to set the variable instead of directly. Reverting back to the previous Plugins version, or disabling Jira in Jenkins stops the error from occurring. Also, going to the branch that failed for the above and clicking "Build Now" succeeds - it only seems to be for existing branches after the update, and only when invoked using "Scan Now". Add Comment   This message was sent by Atlassian Jira (v7.11.2#711002-sha1:fdc329d) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.