gaborgsomogyi commented on a change in pull request #23791:
[SPARK-20597][SQL][SS][WIP] KafkaSourceProvider falls back on path as synonym
for topic
URL: https://github.com/apache/spark/pull/23791#discussion_r261522887
##########
File path: docs/structured-streaming-kafka-integration.md
##########
@@ -539,35 +578,43 @@ ds = df \
<div data-lang="scala" markdown="1">
{% highlight scala %}
-// Write key-value data from a DataFrame to a specific Kafka topic specified
in an option
+// Write key-value data from a DataFrame to Kafka using the topic specified in
the topic option
df.selectExpr("CAST(key AS STRING)", "CAST(value AS STRING)")
.write
.format("kafka")
.option("kafka.bootstrap.servers", "host1:port1,host2:port2")
.option("topic", "topic1")
.save()
-// Write key-value data from a DataFrame to Kafka using a topic specified in
the data
+// Write key-value data from a DataFrame to Kafka using the topic specified in
the data
df.selectExpr("topic", "CAST(key AS STRING)", "CAST(value AS STRING)")
.write
.format("kafka")
.option("kafka.bootstrap.servers", "host1:port1,host2:port2")
.save()
+// Write key-value data from a DataFrame to Kafka using the topic specified in
the path option
+df.selectExpr("CAST(key AS STRING)", "CAST(value AS STRING)")
+ .write
+ .format("kafka")
+ .option("kafka.bootstrap.servers", "host1:port1,host2:port2")
+ .option("topic", "topic1")
+ .save()
Review comment:
The java example in the java tab.
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