pan3793 commented on code in PR #31451:
URL: https://github.com/apache/spark/pull/31451#discussion_r935521681
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/ui/SQLAppStatusListener.scala:
##########
@@ -199,7 +202,37 @@ class SQLAppStatusListener(
}
private def aggregateMetrics(exec: LiveExecutionData): Map[Long, String] = {
- val metricTypes = exec.metrics.map { m => (m.accumulatorId, m.metricType)
}.toMap
+ val accumIds = exec.metrics.map(_.accumulatorId).toSet
+
+ val metricAggregationMap = new mutable.HashMap[String, (Array[Long],
Array[Long]) => String]()
+ val metricAggregationMethods = exec.metrics.map { m =>
+ val optClassName = CustomMetrics.parseV2CustomMetricType(m.metricType)
+ val metricAggMethod = optClassName.map { className =>
+ if (metricAggregationMap.contains(className)) {
+ metricAggregationMap(className)
+ } else {
+ // Try to initiate custom metric object
+ try {
+ val metric = Utils.loadExtensions(classOf[CustomMetric],
Seq(className), conf).head
Review Comment:
Hi @viirya, the `loadExtensions` requires that class has a no-arg
constructor, or a 1-arg constructor that takes a `SparkConf`, do we really need
this restriction for `CustomMetric`?
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