Issue

• The Jenkins logs show lots of WARNING like the following:

[...] WARNING [Handling GET / from 127.0.0.1 : http-nio-127.0.0.1-8080-exec-1 View/index.jelly WeatherColumn/column.jelly] hudson.model.RunMap.retrieve could not load <buildLocation>
java.lang.NullPointerException
  at org.jenkinsci.plugins.workflow.cps.FlowHead.newStartNode(FlowHead.java:97)
  at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.loadProgramFailed(CpsFlowExecution.java:684)
  at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.loadProgramAsync(CpsFlowExecution.java:660)
  at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.onLoad(CpsFlowExecution.java:588)
  at org.jenkinsci.plugins.workflow.job.WorkflowRun.onLoad(WorkflowRun.java:612)
  at hudson.model.RunMap.retrieve(RunMap.java:225)
  at hudson.model.RunMap.retrieve(RunMap.java:57)

Environment

• CloudBees Jenkins Enterprise - Managed Master (CJE-MM)
• CloudBees Jenkins Team (CJT)
• CloudBees Jenkins Platform - Client Master (CJP-CM)
• DEV@cloud (DAC)
• Jenkins LTS
• Pipeline: Groovy < 2.38

Related Issues

• JENKINS-44548

Resolution

This exception is an evidence of JENKINS-44548, a known issue with corrupted FlowExecution records in pipeline builds.

Solution

The issue had been fixed in the following plugin versions:

• Pipeline: Groovy 2.38 available since CJP CM 2.60.3.1

The solution is to upgrade.

Workaround

If this issue is impacting performance on the instance - due to the log being polluted with tons of WARNINGS - you can change the log level of hudson.model.RunMap to SEVERE so that only SEVERE errors are logged for that class in the Jenkins logs. You can do this under Manage Jenkins > Script Console > Log Levels. See for example:

Note: This will not persist upon restart.