Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21029#discussion_r180705366
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/memory.scala
---
@@ -143,7 +144,7 @@ case class MemoryStream[A : Encoder](id: Int,
sqlContext: SQLContext)
logDebug(generateDebugString(newBlocks.flatten, startOrdinal,
endOrdinal))
newBlocks.map { block =>
- new
MemoryStreamDataReaderFactory(block).asInstanceOf[DataReaderFactory[UnsafeRow]]
+ new
MemoryStreamDataReaderFactory(block).asInstanceOf[DataReaderFactory]
--- End diff --
Array is a java-friendly type.
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