[GitHub] [kafka] guozhangwang commented on a change in pull request #9094: KAFKA-10054: KIP-613, add TRACE-level e2e latency metrics

[GitBox]

guozhangwang commented on a change in pull request #9094:
URL: https://github.com/apache/kafka/pull/9094#discussion_r466134186



##########
File path: 
streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamTask.java
##########
@@ -154,15 +153,15 @@ public StreamTask(final TaskId id,
         for (final String terminalNodeName : topology.terminalNodes()) {
             e2eLatencySensors.put(
                 terminalNodeName,
-                TaskMetrics.e2ELatencySensor(threadId, taskId, 
terminalNodeName, RecordingLevel.INFO, streamsMetrics)
+                TaskMetrics.e2ELatencySensor(threadId, taskId, 
terminalNodeName, streamsMetrics)

Review comment:
       This is not introduced by this PR, but I'm wondering why we record the 
`maybeRecordE2ELatency` twice, once before the record is being processed and 
once when it reaches the sink node?




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