gatorsmile commented on a change in pull request #25769: [SPARK-29032][CORE]
Add PrometheusServlet to monitor Master/Worker/Driver
URL: https://github.com/apache/spark/pull/25769#discussion_r331765392
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File path: conf/metrics.properties.template
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@@ -192,4 +201,10 @@
#driver.source.jvm.class=org.apache.spark.metrics.source.JvmSource
-#executor.source.jvm.class=org.apache.spark.metrics.source.JvmSource
\ No newline at end of file
+#executor.source.jvm.class=org.apache.spark.metrics.source.JvmSource
+
+# Example configuration for PrometheusServlet
+#*.sink.prometheusServlet.class=org.apache.spark.metrics.sink.PrometheusServlet
+#*.sink.prometheusServlet.path=/metrics/prometheus
+#master.sink.prometheusServlet.path=/metrics/master/prometheus
+#applications.sink.prometheusServlet.path=/metrics/applications/prometheus
Review comment:
@dongjoon-hyun Will this swamp the Prometheus server? A lot of metrics of
numerous Spark applications will be sent to the central server, for example,
`metrics_{$app_id}_driver_BlockManager_disk_diskSpaceUsed_MB_Value 0`
Have you tried to run it ? How to deal with the high load issues?
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