Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/13342#discussion_r66533974
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala ---
@@ -401,6 +381,53 @@ 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 new data arrives. The returned
[[ContinuousQuery]] object can be used to
--- End diff --
Also can you add a simple example code showing the use of ForeachWriter.
```
datasetOfString.write.foreach(new ForeachWriter[String] {
def open(): Boolean = { // open connection }
def process(record: String) = { // write string to connection }
def close(errorOrNull: Throwable): Unit = { // close the connection }
}
```
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