Github user piggybox commented on the pull request:
https://github.com/apache/spark/pull/8899#issuecomment-145629205
This is indeed confusing. I once used sqlContext.read.json() to read a path
to a folder of JSON files and that worked, so I then tried the parent folder to
read recursively and saw this error. Also I tried the parent path ended with
'/*' or '/*/' as a glob I used in Hadoop and got the same error.
I want to add that it's confusing also because in the log I can see things
like " HadoopRDD: Input split: " followed by the path to one of actual JSON
file, so that seems Spark does find the file and starts reading.
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