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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2015/07/29 15:11:05 UTC
[jira] [Updated] (SPARK-4557) Spark Streaming' foreachRDD method
should accept a VoidFunction<...>, not a Function<..., Void>
[ https://issues.apache.org/jira/browse/SPARK-4557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated SPARK-4557:
-----------------------------
Target Version/s: 2+
> Spark Streaming' foreachRDD method should accept a VoidFunction<...>, not a Function<..., Void>
> -----------------------------------------------------------------------------------------------
>
> Key: SPARK-4557
> URL: https://issues.apache.org/jira/browse/SPARK-4557
> Project: Spark
> Issue Type: Improvement
> Components: Streaming
> Affects Versions: 1.1.0
> Reporter: Alexis Seigneurin
> Priority: Minor
> Labels: starter
>
> In *Java*, using Spark Streaming's foreachRDD function is quite verbose. You have to write:
> {code:java}
> .foreachRDD(items -> {
> ...;
> return null;
> });
> {code}
> Instead of:
> {code:java}
> .foreachRDD(items -> ...);
> {code}
> This is because the foreachRDD method accepts a Function<JavaRDD<...>, Void> instead of a VoidFunction<JavaRDD<...>>. This would make sense to change it to a VoidFunction as, in Spark's API, the foreach method already accepts a VoidFunction.
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