spena commented on a change in pull request #10917:
URL: https://github.com/apache/kafka/pull/10917#discussion_r661606393



##########
File path: 
streams/src/main/java/org/apache/kafka/streams/kstream/internals/KStreamKStreamJoin.java
##########
@@ -96,11 +98,20 @@ public void init(final 
org.apache.kafka.streams.processor.ProcessorContext conte
 
             if (enableSpuriousResultFix
                 && StreamsConfig.InternalConfig.getBoolean(
-                    context().appConfigs(),
+                    context.appConfigs(),
                     ENABLE_KSTREAMS_OUTER_JOIN_SPURIOUS_RESULTS_FIX,
                     true
                 )) {
                 outerJoinWindowStore = 
outerJoinWindowName.map(context::getStateStore);
+                sharedTimeTracker.nextTimeToEmit = 
context.currentSystemTimeMs();
+
+                final Object emitIntervalConfig = context.appConfigs()
+                    
.get(InternalConfig.EMIT_INTERVAL_MS_KSTREAMS_OUTER_JOIN_SPURIOUS_RESULTS_FIX);
+                if (emitIntervalConfig instanceof Number) {
+                    sharedTimeTracker.setEmitInterval(((Number) 
emitIntervalConfig).longValue());
+                } else if (emitIntervalConfig instanceof String) {
+                    sharedTimeTracker.setEmitInterval(Long.parseLong((String) 
emitIntervalConfig));
+                }

Review comment:
       Shouldn't be good to move this code inside 
`StreamsConfig.InternalConfig`? I did that for the `getBoolean` so I could 
re-use it in other places. This is a good candidate for internal configs.




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