Github user fhueske commented on the pull request:
https://github.com/apache/incubator-flink/pull/260#issuecomment-66800177
Ah, OK. I got it :-)
I think we need only one method to recursively enumerate files (and compute
their length).
Not doing the `acceptFile()` check in the `getFileStats()` call is a bug,
that you could fix with this PR. Otherwise, files which will not be read are
included in the size estimates for the optimizer.
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