Github user jerryshao commented on a diff in the pull request:
https://github.com/apache/spark/pull/17617#discussion_r118809133
--- Diff: core/src/main/scala/org/apache/spark/rdd/HadoopRDD.scala ---
@@ -251,7 +251,13 @@ class HadoopRDD[K, V](
null
}
// Register an on-task-completion callback to close the input stream.
- context.addTaskCompletionListener{ context => closeIfNeeded() }
+ context.addTaskCompletionListener { context =>
+ // Update the bytes read before closing is to make sure lingering
bytesRead statistics in
+ // this thread get correctly added.
+ updateBytesRead()
--- End diff --
Close can be called in another thread as I remembered, so I added here to
avoid lingering bytesRead in task running thread (Some bytes can be read when
creating InputFormat), also it is no harm to call this `updateBytesRead` again.
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