Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/20382#discussion_r167128652
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/streaming/DataStreamReader.scala
---
@@ -177,11 +177,14 @@ final class DataStreamReader
private[sql](sparkSession: SparkSession) extends Lo
Optional.ofNullable(userSpecifiedSchema.orNull),
Utils.createTempDir(namePrefix =
s"temporaryReader").getCanonicalPath,
options)
+ val schema = tempReader.readSchema()
+ // Stop tempReader to avoid side-affect thing
--- End diff --
nit: side-affect -> side-effect.
good catch.
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