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https://issues.apache.org/jira/browse/SPARK-21508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16106110#comment-16106110
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Remis Haroon commented on SPARK-21508:
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[~srowen] , I raised a pull request for this
https://github.com/apache/spark/pull/18770
> Documentation on 'Spark Streaming Custom Receivers' has error in example code
> -----------------------------------------------------------------------------
>
> Key: SPARK-21508
> URL: https://issues.apache.org/jira/browse/SPARK-21508
> Project: Spark
> Issue Type: Bug
> Components: Documentation
> Affects Versions: 2.2.0
> Reporter: Remis Haroon
> Priority: Minor
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> The example code provided in the documentation on 'Spark Streaming Custom
> Receivers' has an error.
> https://spark.apache.org/docs/latest/streaming-custom-receivers.html
> {code}
> // Assuming ssc is the StreamingContext
> val customReceiverStream = ssc.receiverStream(new CustomReceiver(host, port))
> val words = lines.flatMap(_.split(" "))
> ...
> {code}
> instead of {code}lines.flatMap(_.split(" ")){code} it should be
> {code}customReceiverStream.flatMap(_.split(" ")){code}
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