Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/962#discussion_r14305949
--- Diff: core/src/main/scala/org/apache/spark/rdd/HadoopRDD.scala ---
@@ -196,6 +197,17 @@ class HadoopRDD[K, V](
context.addOnCompleteCallback{ () => closeIfNeeded() }
val key: K = reader.createKey()
val value: V = reader.createValue()
+
+ // Set the task input metrics.
+ val inputMetrics = new InputMetrics(DataReadMethod.Hadoop)
+ try {
+ inputMetrics.bytesRead = split.inputSplit.value.getLength()
+ } catch {
+ case e: java.io.IOException =>
+ logWarning("Unable to get input size to set InputMetrics for
task", e)
+ }
+ context.taskMetrics.inputMetrics = Some(inputMetrics)
--- End diff --
Actually, now that we display the read method on the UI, we should set this
only if `bytesRead` exists (in the try block). Otherwise we end up with a bunch
of `0 bytes (memory)`
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