[jira] [Created] (NIFI-1491) NPE error on startup because of file permission issues

["Matthew Clarke (JIRA)" <ji...@apache.org>]

Matthew Clarke created NIFI-1491:
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             Summary: NPE error on startup because of file permission issues
                 Key: NIFI-1491
                 URL: https://issues.apache.org/jira/browse/NIFI-1491
             Project: Apache NiFi
          Issue Type: Bug
          Components: Core Framework
    Affects Versions: 0.4.1
            Reporter: Matthew Clarke
            Priority: Minor


 A node that was part of a NiFi cluster would not start.  It immediately through this error in the app log:

2016-02-08 15:26:46,617 DEBUG [main] org.apache.nifi.BootstrapListener Awaiting response from Bootstrap...
2016-02-08 15:26:46,629 INFO [main] org.apache.nifi.BootstrapListener Successfully initiated communication with Bootstrap
2016-02-08 15:26:46,635 ERROR [main] org.apache.nifi.NiFi Failure to launch NiFi due to java.lang.NullPointerException
java.lang.NullPointerException: null
at org.apache.nifi.util.FileUtils.deleteFilesInDir(FileUtils.java:141) ~[nifi-nar-utils-1.1.1.0-12.jar:1.1.1.0-12]
at org.apache.nifi.NiFi.<init>(NiFi.java:98) ~[nifi-runtime-1.1.1.0-12.jar:1.1.1.0-12]
at org.apache.nifi.NiFi.main(NiFi.java:227) ~[nifi-runtime-1.1.1.0-12.jar:1.1.1.0-12]
2016-02-08 15:26:46,637 INFO [Thread-1] org.apache.nifi.NiFi Initiating shutdown of Jetty web server...
2016-02-08 15:26:46,638 INFO [Thread-1] org.apache.nifi.NiFi Jetty web server shutdown completed (nicely or otherwise).

Turns out the problem was permission related to files in the NiFi work dir.
NiFi should present a better error to the user.



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