[NIFI-7535] Adding nar's to auto load nar directory unreadable by user running the nifi jvm fails to start nifi

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.17.0
• Component/s: Extensions
• Environment: NiFi 1.9
• Assignee: Nandor Soma Abonyi
• Reporter: Juan C. Sequeiros
• Created: 15/Jun/20 17:50
• Updated: 10/Jun/22 07:44
• Resolved: 10/Jun/22 07:44

Description

If nar's are added to the extensions directory while NiFi is not running and those nar's do not have read permissions by the user set to run nifi jvm, nifi fails to start up and throws NPE

 

2020-06-15 13:34:16,988 WARN [main] org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down. java.lang.NullPointerException: null at org.apache.nifi.documentation.DocGenerator.generate(DocGenerator.java:62) at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:932) at org.apache.nifi.NiFi.<init>(NiFi.java:158) at org.apache.nifi.NiFi.<init>(NiFi.java:72) at org.apache.nifi.NiFi.main(NiFi.java:297) 2020-06-15 13:34:16,988 INFO [Thread-1] org.apache.nifi.NiFi Initiating shutdown of Jetty web server... 2020-06-15 13:34:16,989 INFO [Thread-1] org.apache.nifi.NiFi Jetty web server shutdown completed (nicely or otherwise).

Issue Links

• links to: GitHub Pull Request #6056