GitHub user JoshRosen opened a pull request:
https://github.com/apache/spark/pull/18083
[SPARK-20863] Add metrics/instrumentation to LiveListenerBus
## What changes were proposed in this pull request?
This patch adds Coda Hale metrics for instrumenting the `LiveListenerBus`
in order to track the number of events received, dropped, and processed, as
well as a timer to track the processing time per event. See the new
`LiveListenerBusMetrics` for a complete description of the new metrics.
## How was this patch tested?
New tests in SparkListenerSuite, including a test to ensure proper counting
of dropped listener events.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/JoshRosen/spark listener-bus-metrics
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18083.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #18083
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commit a1fb5a8f2e58fe774aabc76e9d1a6859cfa99370
Author: Josh Rosen <joshro...@databricks.com>
Date: 2017-05-23T21:49:35Z
WIP
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