The current implementation of tf.io.gfile.glob may return sorted results on __some__ filesystems. #455
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The current implementation of tf.io.gfile.glob may return sorted results on some filesystems.
But in general this API provides no ordering guarantee on all file systems.
If, in a remote chance, that different calls to this function returns results in different orders,
the sharding logic in FileDataSource would break.
This CL sorts the results to ensure that will not happen.