cameronlee314 commented on a change in pull request #1040: SAMZA-2199: [Scala 
cleanup] Convert MetricsConfig to Java
URL: https://github.com/apache/samza/pull/1040#discussion_r292192065
 
 

 ##########
 File path: samza-core/src/main/java/org/apache/samza/util/DiagnosticsUtil.java
 ##########
 @@ -122,6 +122,8 @@ public MetadataFileContents(String version, String 
metricsSnapshot) {
       DiagnosticsManager diagnosticsManager = new DiagnosticsManager(jobName, 
jobId, containerId, execEnvContainerId.orElse(""), taskClassVersion,
           samzaVersion, hostName, diagnosticsSystemStream, systemProducer, 
Duration.ofMillis(new TaskConfig(config).getShutdownMs()));
 
+      Option<String> blacklist = 
ScalaJavaUtil.JavaOptionals$.MODULE$.toRichOptional(
 
 Review comment:
   That's what I tried initially, but the IDE complains that it can't find 
`JavaOptionals` when doing that. Looks like this `MODULE$` syntax is used in 
some other places too.

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