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-rw-r--r--docs/streaming-programming-guide.md72
1 files changed, 72 insertions, 0 deletions
diff --git a/docs/streaming-programming-guide.md b/docs/streaming-programming-guide.md
index 1fcd198685..38b4f78177 100644
--- a/docs/streaming-programming-guide.md
+++ b/docs/streaming-programming-guide.md
@@ -1246,6 +1246,22 @@ dstream.foreachRDD { rdd =>
}
{% endhighlight %}
</div>
+<div data-lang="java" markdown="1">
+{% highlight java %}
+dstream.foreachRDD(new VoidFunction<JavaRDD<String>>() {
+ @Override
+ public void call(JavaRDD<String> rdd) {
+ final Connection connection = createNewConnection(); // executed at the driver
+ rdd.foreach(new VoidFunction<String>() {
+ @Override
+ public void call(String record) {
+ connection.send(record); // executed at the worker
+ }
+ });
+ }
+});
+{% endhighlight %}
+</div>
<div data-lang="python" markdown="1">
{% highlight python %}
def sendRecord(rdd):
@@ -1279,6 +1295,23 @@ dstream.foreachRDD { rdd =>
}
{% endhighlight %}
</div>
+<div data-lang="java" markdown="1">
+{% highlight java %}
+dstream.foreachRDD(new VoidFunction<JavaRDD<String>>() {
+ @Override
+ public void call(JavaRDD<String> rdd) {
+ rdd.foreach(new VoidFunction<String>() {
+ @Override
+ public void call(String record) {
+ Connection connection = createNewConnection();
+ connection.send(record);
+ connection.close();
+ }
+ });
+ }
+});
+{% endhighlight %}
+</div>
<div data-lang="python" markdown="1">
{% highlight python %}
def sendRecord(record):
@@ -1309,6 +1342,25 @@ dstream.foreachRDD { rdd =>
}
{% endhighlight %}
</div>
+<div data-lang="java" markdown="1">
+{% highlight java %}
+dstream.foreachRDD(new VoidFunction<JavaRDD<String>>() {
+ @Override
+ public void call(JavaRDD<String> rdd) {
+ rdd.foreachPartition(new VoidFunction<Iterator<String>>() {
+ @Override
+ public void call(Iterator<String> partitionOfRecords) {
+ Connection connection = createNewConnection();
+ while (partitionOfRecords.hasNext()) {
+ connection.send(partitionOfRecords.next());
+ }
+ connection.close();
+ }
+ });
+ }
+});
+{% endhighlight %}
+</div>
<div data-lang="python" markdown="1">
{% highlight python %}
def sendPartition(iter):
@@ -1342,6 +1394,26 @@ dstream.foreachRDD { rdd =>
{% endhighlight %}
</div>
+<div data-lang="java" markdown="1">
+{% highlight java %}
+dstream.foreachRDD(new VoidFunction<JavaRDD<String>>() {
+ @Override
+ public void call(JavaRDD<String> rdd) {
+ rdd.foreachPartition(new VoidFunction<Iterator<String>>() {
+ @Override
+ public void call(Iterator<String> partitionOfRecords) {
+ // ConnectionPool is a static, lazily initialized pool of connections
+ Connection connection = ConnectionPool.getConnection();
+ while (partitionOfRecords.hasNext()) {
+ connection.send(partitionOfRecords.next());
+ }
+ ConnectionPool.returnConnection(connection); // return to the pool for future reuse
+ }
+ });
+ }
+});
+{% endhighlight %}
+</div>
<div data-lang="python" markdown="1">
{% highlight python %}
def sendPartition(iter):