Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/2310#issuecomment-56290108
@ash211 this particular fix will only work for HadoopRDD but not other
cases where we track input bytes read. A more general fix is pretty simple
though, I think.
The way to fix this is to change the input bytes read from a Long to an
AtomicLong and to `incrementAndGet` it whenever it is modified (currently in
HadoopRDD, newHadoopRDD, and BlockManager) instead of just setting the value
directly. I think that would fix the case where it's mutated multiple times in
a single task.
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