gaborgsomogyi commented on a change in pull request #30336:
URL: https://github.com/apache/spark/pull/30336#discussion_r525270932
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/streaming/ui/StreamingQueryStatisticsPage.scala
##########
@@ -236,12 +239,61 @@ private[ui] class StreamingQueryStatisticsPage(parent:
StreamingQueryTab)
<td
class={"aggregated-num-state-rows-dropped-by-watermark-timeline"}>{graphUIDataForNumRowsDroppedByWatermark.generateTimelineHtml(jsCollector)}</td>
<td
class={"aggregated-num-state-rows-dropped-by-watermark-histogram"}>{graphUIDataForNumRowsDroppedByWatermark.generateHistogramHtml(jsCollector)}</td>
</tr>
- // scalastyle:on
+ // scalastyle:on
+
+ result ++= generateAggregatedCustomMetrics(query, minBatchTime,
maxBatchTime, jsCollector)
+ result
} else {
new NodeBuffer()
}
}
+ def generateAggregatedCustomMetrics(
+ query: StreamingQueryUIData,
+ minBatchTime: Long,
+ maxBatchTime: Long,
+ jsCollector: JsCollector): NodeBuffer = {
+ val result: NodeBuffer = new NodeBuffer
+
+ // This is made sure on caller side but put it here to be defensive
+ require(query.lastProgress.stateOperators.nonEmpty)
+ val enabledCustomMetrics =
parent.parent.conf.get(ENABLED_STREAMING_UI_CUSTOM_METRIC_LIST)
+ logDebug(s"Enabled custom metrics: $enabledCustomMetrics")
+ query.lastProgress.stateOperators.head.customMetrics.keySet().asScala
+ .filter(enabledCustomMetrics.contains(_)).map { metricName =>
+ val data = query.recentProgress.map(p =>
(parseProgressTimestamp(p.timestamp),
+ p.stateOperators.map(_.customMetrics.get(metricName).toDouble).sum))
+ val max = data.maxBy(_._2)._2
+
+ val graphUIData =
+ new GraphUIData(
+ s"aggregated-$metricName-timeline",
+ s"aggregated-$metricName-histogram",
+ data,
+ minBatchTime,
+ maxBatchTime,
+ 0,
+ max,
+ "")
Review comment:
The only concern what I see is that all `StateStoreProvider`
implementation must support lightweight initialization which can be done from
UI thread w/o exception. Not sure this implicit requirement is or will be known
to all `StateStoreProvider` implementor.
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