Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/4794#discussion_r25466289
--- Diff: core/src/main/scala/org/apache/spark/rdd/PairRDDFunctions.scala
---
@@ -993,6 +993,7 @@ class PairRDDFunctions[K, V](self: RDD[(K, V)])
val (outputMetrics, bytesWrittenCallback) =
initHadoopOutputMetrics(context)
val writer =
format.getRecordWriter(hadoopContext).asInstanceOf[NewRecordWriter[K,V]]
+ require(writer != null, s"Unable to obtain NewRecordWriter")
--- End diff --
There's no string interpolation here, and there is no actual
`NewRecordWriter` class (it's an alias). Don't worry I can edit that before
merge. I will have Jenkins test just for completeness
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