danny0405 commented on code in PR #18882:
URL: https://github.com/apache/hudi/pull/18882#discussion_r3332946458
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hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/HoodieMergeOnReadRDDV2.scala:
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@@ -259,6 +255,34 @@ class HoodieMergeOnReadRDDV2(@transient sc: SparkContext,
}
}
+ private def withInputMetrics(iter: Iterator[InternalRow],
+ closeableIter: Iterator[InternalRow],
+ context: TaskContext,
+ bytesReadCallback: () => Long):
Iterator[InternalRow] = {
+ val metricIter = new Iterator[InternalRow] with Closeable {
+ override def hasNext: Boolean = iter.hasNext
+
+ override def next(): InternalRow = {
+ val row = iter.next()
+ HoodieSparkInputMetricsUtils.incRecordsRead(context, 1)
+ row
+ }
+
+ override def close(): Unit = {
+ closeableIter match {
+ case closeable: Closeable => closeable.close()
+ case _ =>
+ }
+ }
+ }
+
+ context.addTaskCompletionListener[Unit] { _ =>
+ HoodieSparkInputMetricsUtils.incBytesRead(context, bytesReadCallback())
Review Comment:
will this incur perf/resource cost, do you have micro-benchmark for this?
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