srowen commented on a change in pull request #22282: [SPARK-23539][SS] Add
support for Kafka headers in Structured Streaming
URL: https://github.com/apache/spark/pull/22282#discussion_r247349475
##########
File path:
external/kafka-0-10-sql/src/test/scala/org/apache/spark/sql/kafka010/KafkaSinkSuite.scala
##########
@@ -62,14 +62,23 @@ class KafkaSinkSuite extends StreamTest with
SharedSQLContext with KafkaTest {
val topic = newTopic()
testUtils.createTopic(topic)
val df = Seq("1", "2", "3", "4", "5").map(v => (topic, v)).toDF("topic",
"value")
+ .withColumn("headers",
+ map(lit("x"),
col("value").plus(1).cast(IntegerType).cast(StringType).cast(BinaryType),
Review comment:
What about `$col + 1`? and that's already an integer type, right?
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