[
https://issues.apache.org/jira/browse/MINIFI-128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15768325#comment-15768325
]
ASF GitHub Bot commented on MINIFI-128:
---------------------------------------
Github user JPercivall commented on a diff in the pull request:
https://github.com/apache/nifi-minifi/pull/68#discussion_r93529968
--- Diff:
minifi-bootstrap/src/main/java/org/apache/nifi/minifi/bootstrap/ShutdownHook.java
---
@@ -55,10 +55,12 @@ public void run() {
System.out.println("Initiating shutdown of bootstrap change
ingestors...");
ConfigurationChangeCoordinator notifier =
runner.getChangeCoordinator();
- try {
- notifier.close();
- } catch (IOException ioe) {
- System.out.println("Could not successfully stop notifier due
to " + ioe);
+ if (notifier != null) {
--- End diff --
After attempting to start without setting the file path I see the following
message printed to the terminal ~20 seconds after the initial "start" command
ends (and gives control back to the user). Is there a way to check if the
MiNiFi instance was ever started in the first place before attempting to stop
it?
```
MiNiFi has not finished shutting down after 20 seconds. Killing process.
MiNiFi is done shutting down
```
> NPE if nifi.minifi.notifier.file.config.path wasn't configured
> --------------------------------------------------------------
>
> Key: MINIFI-128
> URL: https://issues.apache.org/jira/browse/MINIFI-128
> Project: Apache NiFi MiNiFi
> Issue Type: Bug
> Components: Agent Configuration/Installation
> Affects Versions: 0.0.1
> Environment: current master branch build
> Reporter: Andrew Grande
> Assignee: Aldrin Piri
> Priority: Minor
> Fix For: 0.2.0
>
>
> When enabling a FileChangeNotifier, it's easy to forget uncommenting the
> *nifi.minifi.notifier.file.config.path* property (required). Minifi restart
> will throw an unfriendly error:
> {noformat}
> Exception in thread "main" java.lang.IllegalArgumentException: Property,
> nifi.minifi.notifier.file.config.path, for the path of the config file must
> be specified.
> at
> org.apache.nifi.minifi.bootstrap.configuration.notifiers.FileChangeNotifier.initialize(FileChangeNotifier.java:154)
> at
> org.apache.nifi.minifi.bootstrap.RunMiNiFi.initializeNotifiers(RunMiNiFi.java:1452)
> at
> org.apache.nifi.minifi.bootstrap.RunMiNiFi.start(RunMiNiFi.java:1116)
> at org.apache.nifi.minifi.bootstrap.RunMiNiFi.main(RunMiNiFi.java:224)
> Initiating shutdown of bootstrap change notifiers...
> Exception in thread "Thread-2" java.lang.NullPointerException
> at
> java.util.Collections$UnmodifiableCollection.<init>(Collections.java:1026)
> at java.util.Collections$UnmodifiableSet.<init>(Collections.java:1128)
> at java.util.Collections.unmodifiableSet(Collections.java:1118)
> at
> org.apache.nifi.minifi.bootstrap.RunMiNiFi.getChangeNotifiers(RunMiNiFi.java:1438)
> at
> org.apache.nifi.minifi.bootstrap.ShutdownHook.run(ShutdownHook.java:57)
> {noformat}
> Expected: improve the error message to be meaningful and suggest the user
> configure the property. No stacktrace, as we know what's going on exactly.
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