Github user HeartSaVioR commented on a diff in the pull request: https://github.com/apache/storm/pull/2200#discussion_r126547602 --- Diff: docs/Metrics.md --- @@ -125,3 +126,193 @@ The [builtin metrics]({{page.git-blob-base}}/storm-client/src/jvm/org/apache/sto [BuiltinMetricsUtil.java]({{page.git-blob-base}}/storm-client/src/jvm/org/apache/storm/daemon/metrics/BuiltinMetricsUtil.java) sets up data structures for the built-in metrics, and facade methods that the other framework components can use to update them. The metrics themselves are calculated in the calling code -- see for example [`ackSpoutMsg`]({{page.git-blob-base}}/storm-client/src/jvm/org/apache/storm/executor/Executor.java). +#### Reporting Rate + +The rate at which built in metrics are reported is configurable through the `topology.builtin.metrics.bucket.size.secs` metric. If you set this too low it can overload the consumers +and some metrics consumers expect metrics to show up at a fixed rate or the numbers could be off, so please use caution when modifying this. --- End diff -- If bucket.size.secs is configured to be too small, the update to metrics consumers will happen more frequently and it could make some metrics consumers being overloaded.
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