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ASF GitHub Bot commented on NIFI-1491: -------------------------------------- GitHub user pvillard31 opened a pull request: https://github.com/apache/nifi/pull/227 NIFI-1491 Added comment when unable to list directory content You can merge this pull request into a Git repository by running: $ git pull https://github.com/pvillard31/nifi NIFI-1491 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/nifi/pull/227.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #227 ---- commit 4ae03bb7ed6b2739351bcda58528d16b497821ff Author: Pierre Villard <pierre.villard...@gmail.com> Date: 2016-02-16T10:02:10Z Merge remote-tracking branch 'refs/remotes/apache/master' commit c912149d99739acbacd9ddbedf2789bb9a34b96e Author: Pierre Villard <pierre.villard...@gmail.com> Date: 2016-02-16T12:08:43Z NIFI-1491 comment NPE after listFiles() Added a comment if unable to list directory content ---- > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)