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https://issues.apache.org/jira/browse/METRON-1887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16699594#comment-16699594
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ASF GitHub Bot commented on METRON-1887:
----------------------------------------
Github user mmiklavc commented on a diff in the pull request:
https://github.com/apache/metron/pull/1274#discussion_r236430858
--- Diff:
metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/utils/VFSClassloaderUtil.java
---
@@ -112,14 +112,18 @@ public static FileSystemManager generateVfs() throws
FileSystemException {
* @throws FileSystemException
*/
public static Optional<ClassLoader> configureClassloader(String paths)
throws FileSystemException {
+ LOG.debug("Configuring class loader with paths = {}", paths);
if(paths.trim().isEmpty()) {
--- End diff --
We haven't encountered any instances with path being null that I'm aware of
- I'd like to start with this and add more checks as needed.
> Add logging to the ClasspathFunctionResolver
> --------------------------------------------
>
> Key: METRON-1887
> URL: https://issues.apache.org/jira/browse/METRON-1887
> Project: Metron
> Issue Type: Improvement
> Reporter: Michael Miklavcic
> Assignee: Michael Miklavcic
> Priority: Major
>
> We had a user reporting non-deterministic NPE's here -
> [https://github.com/apache/metron/blob/master/metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/dsl/functions/resolver/ClasspathFunctionResolver.java#L250.]
> The purpose of this ticket is to more gracefully handle the NPE and add some
> additional debugging information to better track down the source of this
> issue should it come up again.
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