KB-2070 "Another deployment is already running" when attempting to deploy using the Automated Deployment Manager (ADM)

Symptoms

While inspecting or importing a package using the Automated Deployment Manager (ADM) servlet, the status will remain on "In Progress" indefinitely. This looks like:

In the application server logs, the following error output will appear:

YYYY-MM-DD HH:MM:SS,sss [ajp-nio-8009-exec-XXX] ERROR com.appiancorp.ps.plugins.automatedimport.DeploymentUtils - Error starting the deployment. Another deployment is already running.

YYYY-MM-DD HH:MM:SS,sss [ajp-nio-8009-exec-XXX] ERROR com.appiancorp.ps.plugins.automatedimport.remote.RemoteDeploymentAutomationServlet - Error while initializing the deployment.
java.lang.IllegalStateException: Error starting the deployment. Another deployment is already running.
        at com.appiancorp.ps.plugins.automatedimport.DeploymentUtils.validateNonConcurrentDeployment(DeploymentUtils.java:409)
        at com.appiancorp.ps.plugins.automatedimport.DeploymentUtils.startDeployment(DeploymentUtils.java:148)
        at com.appiancorp.ps.plugins.automatedimport.remote.RemoteDeploymentAutomationServlet.doPost(RemoteDeploymentAutomationServlet.java:111)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
        at com.atlassian.plugin.servlet.DelegatingPluginServlet.service(DelegatingPluginServlet.java:37)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)

Cause

In the most common instance, this means that an action has been attempted while the ADM is already processing a deployment. It can also be observed after an inspect failure against the deployment package has occurred.

Action

1. Check the application server logs to ensure that the behavior is in line with this article and not KB-1445.
2. Confirm that any expected deployments have completed. KB-1738 provides steps on how to check if an application import was successful. 
3. Remove the deployment_progress_file.properties file located in the All Objects > Default Community > Temporary Documents Knowledge Center > Temporary Documents folder.
4. Re-attempt the deployment.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: January 2020