From c4b8a7eab4e0bf387efba02986d5b9d1bf914038 Mon Sep 17 00:00:00 2001 From: Rajini Sivaram Date: Wed, 4 Oct 2017 10:53:18 -0400 Subject: [PATCH] KAFKA-5738; Upgrade note for cumulative count metric (KIP-187) Author: Rajini Sivaram Reviewers: Ismael Juma Closes #4014 from rajinisivaram/MINOR-upgrade-KIP-187 --- docs/upgrade.html | 3 +++ 1 file changed, 3 insertions(+) diff --git a/docs/upgrade.html b/docs/upgrade.html index fbf47d6c89f..b7844020a39 100644 --- a/docs/upgrade.html +++ b/docs/upgrade.html @@ -76,6 +76,9 @@ will return 0.0 in such cases to minimise the probability of breaking users who read the value of every client metric (via a MetricsReporter implementation or by calling the metrics() method). org.apache.kafka.common.Metric#metricValue() can be used to retrieve numeric and non-numeric metric values. +
  • Every Kafka rate metric now has a corresponding cumulative count metric with the suffix -total + to simplify downstream processing. For example, records-consumed-rate has a corresponding + metric named records-consumed-total.
  • Mx4j will only be enabled if the system property kafka_mx4jenable is set to true. Due to a logic inversion bug, it was previously enabled by default and disabled if kafka_mx4jenable was set to true.