Github user maropu commented on the issue:
https://github.com/apache/spark/pull/16030
@brkyvz How should we handle this query? I think we have some overheads to
check the constant value (`1480617712537`) in path matches all the data in
DataFrame and to throw an exception if illegal values detected.
```
case class A(a: Long, b: Int)
val as = Seq(A(1, 2))
val path = "/tmp/part"
sqlContext.createDataFrame(as).write.mode("overwrite").parquet(s"$path/a=1480617712537/")
val df = sqlContext.read.parquet(path)
df.printSchema()
df.collect()
```
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