topic Re: How can I somehow run spark.something in a worker? - rdd foreach spark.context in Data Engineering

How can I somehow run spark.something in a worker? - rdd foreach spark.context

alexgv12 — Tue, 20 Sep 2022 22:52:15 GMT

i am using rdd to parallelize a function, in this function i format the record i want to save, how can i store from this function the record with a dataframe? because every time i use spark..... an error is generated Caused by: org.apache.spark.api.python.PythonException: 'RuntimeError: SparkContext should only be created and accessed on the driver.'

How can I somehow run spark. something in a worker?

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Re: How can I somehow run spark.something in a worker? - rdd foreach spark.context

Ryan_Chynoweth — Wed, 21 Sep 2022 22:27:29 GMT

You cannot. It is not serializable and not available on a worker. I would recommend that you use the DataFrame APIs. It should be much more performant and there are very limited reasons why RDDs should be used over a DataFrame. Your function looks like it could be converted to a user defined function.

Re: How can I somehow run spark.something in a worker? - rdd foreach spark.context

Anonymous — Mon, 03 Oct 2022 06:15:36 GMT

Hi @alexander grajales vanegas

Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help.

We'd love to hear from you.

Thanks!