宿荣全 created SPARK-4817:
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Summary: Print the specified number of data and handle all of the
elements in RDD
Key: SPARK-4817
URL: https://issues.apache.org/jira/browse/SPARK-4817
Project: Spark
Issue Type: New Feature
Components: Streaming
Reporter: 宿荣全
Priority: Minor
Dstream.print function:Print 10 elements and handle 11 elements.
A new function based on Dstream.print function is presented:
the new function:
Print the specified number of data and handle all of the elements in RDD.
there is a work scene:
val dstream = stream.map->filter->mapPartitions->print
the data after filter need update database in mapPartitions,but don't need
print each data,only need to print the top 20 for view the data processing.
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