[
https://issues.apache.org/jira/browse/SPARK-8412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
jweinste reopened SPARK-8412:
-----------------------------
This is improperly implemented or improperly documented. Either way something
needs to be corrected.
http://spark.apache.org/docs/latest/streaming-kafka-integration.html
You'll have to scan down to
http://spark.apache.org/docs/latest/streaming-kafka-integration.html
#tab_java_2
directKafkaStream.foreachRDD(
new Function<JavaPairRDD<String, String>, Void>() {
@Override
public Void call(JavaPairRDD<String, Integer> rdd) throws IOException {
OffsetRange[] offsetRanges = ((HasOffsetRanges)rdd).offsetRanges
// offsetRanges.length = # of Kafka partitions being consumed
...
return null;
}
}
);
> java#KafkaUtils.createDirectStream Java(Pair)RDDs do not implement
> HasOffsetRanges
> ----------------------------------------------------------------------------------
>
> Key: SPARK-8412
> URL: https://issues.apache.org/jira/browse/SPARK-8412
> Project: Spark
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 1.3.0
> Reporter: jweinste
> Priority: Critical
>
> // Create direct kafka stream with brokers and topics
> final JavaPairInputDStream<String, String> messages =
> KafkaUtils.createDirectStream(jssc, String.class, String.class,
> StringDecoder.class,
> StringDecoder.class, kafkaParams, topics);
> messages.foreachRDD(new Function<JavaPairRDD<String, String>,
> Void>() {
> @Override
> public Void call(final JavaPairRDD<String, String> rdd)
> throws Exception {
> if (rdd instanceof HasOffsetRanges) {
> //will never happen.
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