resolved via #6149 #6154 
Fixes a problem where Kafka Plugin doesn't work in certain situations
Fixes a problem where Kafka Plugin doesn't work in certain situations

#### description 
If Sampling is not set to 1, Kafka Plugin may not handle traces properly, which may cause problems.
plugins/kafka/src/main/java/com/navercorp/pinpoint/plugin/kafka/interceptor/ConsumerRecordEntryPointInterceptor.java
plugins/kafka/src/main/java/com/navercorp/pinpoint/plugin/kafka/interceptor/ConsumerRecordEntryPointInterceptor.java
diff --git a/plugins/kafka/src/main/java/com/navercorp/pinpoint/plugin/kafka/interceptor/ConsumerRecordEntryPointInterceptor.java b/plugins/kafka/src/main/java/com/navercorp/pinpoint/plugin/kafka/interceptor/ConsumerRecordEntryPointInterceptor.java
index 0c8604f14bd6..b0ca62488086 100644
--- a/plugins/kafka/src/main/java/com/navercorp/pinpoint/plugin/kafka/interceptor/ConsumerRecordEntryPointInterceptor.java
+++ b/plugins/kafka/src/main/java/com/navercorp/pinpoint/plugin/kafka/interceptor/ConsumerRecordEntryPointInterceptor.java
@@ -148,7 +148,7 @@ Trace createTrace0(TraceContext traceContext, ConsumerRecord consumerRecord) {
                     if (isDebug) {
                         logger.debug("TraceID not exist. camSampled is false. skip trace.");
                     }
-                    return null;
+                    return trace;
                 }
             }
 
