Github user dongjoon-hyun commented on the pull request:
https://github.com/apache/spark/pull/12290#issuecomment-208117591
Other examples in
`http://spark.apache.org/docs/latest/sql-programming-guide.html` also shows
`long`.
By the way, as you requested, I cleanly synced, built and tested this again
a minute ago. I hope it helps your review.
```
scala> val path = "examples/src/main/resources/people.json"
path: String = examples/src/main/resources/people.json
scala> val people = sqlContext.read.json(path)
people: org.apache.spark.sql.DataFrame = [age: bigint, name: string]
scala> people.printSchema()
root
|-- age: long (nullable = true)
|-- name: string (nullable = true)
```
Thank you, @srowen .
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