dongjoon-hyun commented on a change in pull request #23328:
[SPARK-26327][SQL][FOLLOW-UP] Refactor the code and restore the metrics name
URL: https://github.com/apache/spark/pull/23328#discussion_r242007662
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/DataSourceScanExec.scala
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@@ -167,14 +167,26 @@ case class FileSourceScanExec(
partitionSchema = relation.partitionSchema,
relation.sparkSession.sessionState.conf)
- private var fileListingTime = 0L
+ val driverMetrics: HashMap[String, Long] = HashMap.empty
+
+ /**
+ * Send the driver-side metrics. Before calling this function,
selectedPartitions has
+ * been initialized. See SPARK-26327 for more details.
+ */
+ private def sendDriverMetrics(): Unit = {
+ driverMetrics.foreach(e => metrics(e._1).add(e._2))
+ val executionId =
sparkContext.getLocalProperty(SQLExecution.EXECUTION_ID_KEY)
+ SQLMetrics.postDriverMetricUpdates(sparkContext, executionId,
+ metrics.filter(e => driverMetrics.contains(e._1)).values.toSeq)
+ }
@transient private lazy val selectedPartitions: Seq[PartitionDirectory] = {
val optimizerMetadataTimeNs =
relation.location.metadataOpsTimeNs.getOrElse(0L)
val startTime = System.nanoTime()
val ret = relation.location.listFiles(partitionFilters, dataFilters)
+ driverMetrics("filesNum") = ret.map(_.files.size.toLong).sum
Review comment:
Hi, @gatorsmile . It looks like a typo of `numFiles`.
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