Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/13342#discussion_r66541395
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala ---
@@ -401,6 +383,91 @@ final class DataFrameWriter private[sql](df:
DataFrame) {
}
/**
+ * :: Experimental ::
+ * Starts the execution of the streaming query, which will continually
send results to the given
+ * [[ForeachWriter]] as as new data arrives. The [[ForeachWriter]] can
be used to send the data
+ * generated by the [[DataFrame]]/[[Dataset]] to an external system. The
returned The returned
+ * [[ContinuousQuery]] object can be used to interact with the stream.
+ *
+ * Scala example:
+ * {{{
+ * datasetOfString.write.foreach(new ForeachWriter[String] {
+ * def open(partitionId: Long, version: Long): Boolean = {
+ * // open connection
+ * }
+ * def process(record: String) = {
+ * // write string to connection
+ * }
+ * def close(errorOrNull: Throwable): Unit = {
--- End diff --
check indents.
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