nizhikov commented on code in PR #13929:
URL: https://github.com/apache/kafka/pull/13929#discussion_r1331245323
##########
core/src/main/scala/kafka/server/AbstractFetcherManager.scala:
##########
@@ -39,27 +43,37 @@ abstract class AbstractFetcherManager[T <:
AbstractFetcherThread](val name: Stri
val failedPartitions = new FailedPartitions
this.logIdent = "[" + name + "] "
- private val tags = Map("clientId" -> clientId).asJava
+ newMetrics()
- metricsGroup.newGauge("MaxLag", () => {
- // current max lag across all fetchers/topics/partitions
- fetcherThreadMap.values.foldLeft(0L) { (curMaxLagAll, fetcherThread) =>
- val maxLagThread =
fetcherThread.fetcherLagStats.stats.values.foldLeft(0L)((curMaxLagThread,
lagMetrics) =>
- math.max(curMaxLagThread, lagMetrics.lag))
- math.max(curMaxLagAll, maxLagThread)
- }
- }, tags)
+ private[server] def newMetrics(): Unit = {
+ val tags = Map("clientId" -> clientId).asJava
+ metricsGroup.newGauge(MaxLagMetricName, () => {
Review Comment:
We can use
```
Set<MetricName> metrics = ...;
MetricName name = metricGroup.metricName(MaxLagMetricName, tags);
KafkaYammerMetrics.defaultRegistry().newGauge(name, () => { ... });
metrics.add(name);
```
And store explicit `MetricName` instead of implicit name and tags.
```
metrics.forEach(KafkaYammerMetrics.defaultRegistry()::removeMetric);
`` `
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
