OmniaGM commented on code in PR #15836:
URL: https://github.com/apache/kafka/pull/15836#discussion_r1586084377
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core/src/main/scala/kafka/server/FetchSession.scala:
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@@ -603,14 +619,16 @@ class FetchSessionCache(private val maxEntries: Int,
// A map containing sessions which can be evicted by privileged sessions.
private val evictableByPrivileged = new util.TreeMap[EvictableKey,
FetchSession]
+ private val metricTag = Map("shard" -> s"$shardNum").asJava
+
// Set up metrics.
- metricsGroup.removeMetric(FetchSession.NUM_INCREMENTAL_FETCH_SESSIONS)
- metricsGroup.newGauge(FetchSession.NUM_INCREMENTAL_FETCH_SESSIONS, () =>
FetchSessionCache.this.size)
-
metricsGroup.removeMetric(FetchSession.NUM_INCREMENTAL_FETCH_PARTITIONS_CACHED)
- metricsGroup.newGauge(FetchSession.NUM_INCREMENTAL_FETCH_PARTITIONS_CACHED,
() => FetchSessionCache.this.totalPartitions)
-
metricsGroup.removeMetric(FetchSession.INCREMENTAL_FETCH_SESSIONS_EVICTIONS_PER_SEC)
+ metricsGroup.removeMetric(FetchSession.NUM_INCREMENTAL_FETCH_SESSIONS,
metricTag)
+ metricsGroup.newGauge(FetchSession.NUM_INCREMENTAL_FETCH_SESSIONS, () =>
FetchSessionCache.this.size, metricTag)
Review Comment:
Am maybe wrong here but don't change tags of an existing metrics need a KIP!
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