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Showing posts with the label Apache Spark

How To Optimize This Code On Spark?

How to make this code more efficient in Spark? I need to calculate minimum, maximum, count, mean fr… Read more How To Optimize This Code On Spark?

Pyspark: How To Flatten Nested Arrays By Merging Values In Spark

I have 10000 jsons with different ids each has 10000 names. How to flatten nested arrays by mergin… Read more Pyspark: How To Flatten Nested Arrays By Merging Values In Spark

Converting Complex Rdd To A Flatten Rdd With Pyspark

I have the following CSV (sample) id timestamp routeid creationdate parameter… Read more Converting Complex Rdd To A Flatten Rdd With Pyspark

Sparkcontext Error - File Not Found /tmp/spark-events Does Not Exist

Running a Python Spark Application via API call - On submitting the Application - response - Faile… Read more Sparkcontext Error - File Not Found /tmp/spark-events Does Not Exist

Is It Possible To Scale Data By Group In Spark?

I want to scale data with StandardScaler (from pyspark.mllib.feature import StandardScaler), by now… Read more Is It Possible To Scale Data By Group In Spark?

Pyspark Structured Streaming From Kafka Does Not Output To Console For Debugging

Below is my code. I have tried many different select variations, and yet the app runs, but without … Read more Pyspark Structured Streaming From Kafka Does Not Output To Console For Debugging

Pyspark: Remove Utf Null Character From Pyspark Dataframe

I have a pyspark dataframe similar to the following: df = sql_context.createDataFrame([ Row(a=3, … Read more Pyspark: Remove Utf Null Character From Pyspark Dataframe

Issue In Encoding Non-numeric Feature To Numeric In Spark And Ipython

I am working on something where I have to make predictions for numeric data (monthly employee spend… Read more Issue In Encoding Non-numeric Feature To Numeric In Spark And Ipython

Unable To Open Pyspark In Mac Os

I have installed pyspark through pip but unable to open it. It shows following error . Users/sonv… Read more Unable To Open Pyspark In Mac Os

Pyspark Convert Result Of Mappartitions To Spark Dataframe

I have a job requires to run on a partitioned spark dataframe, and the process looks like: rdd = sp… Read more Pyspark Convert Result Of Mappartitions To Spark Dataframe

Spark With Cassandra Python Setup

I am trying to use spark to do some simple computations on Cassandra tables, but I am quite lost. … Read more Spark With Cassandra Python Setup

Wrapping Pyspark Pipeline.__init__ And Decorators

I am trying to wrap the constructor for pyspark Pipeline.init constructor, and monkey patch in the … Read more Wrapping Pyspark Pipeline.__init__ And Decorators

Spark: How To Correctly Transform Dataframe By Mapinpandas

I'm trying to transform spark dataframe with 10k rows by latest spark 3.0.1 function mapInPanda… Read more Spark: How To Correctly Transform Dataframe By Mapinpandas

Correct Way Of Writing Two Floats Into A Regular Txt

I am running a big job, in cluster mode. However, I am only interested in two floats numbers, which… Read more Correct Way Of Writing Two Floats Into A Regular Txt

How To Drop Columns Based On Multiple Filters In A Dataframe Using Pyspark?

I have a list of valid values that a cell can have. If one cell in a column is invalid, I need to d… Read more How To Drop Columns Based On Multiple Filters In A Dataframe Using Pyspark?

Sparkui Url Becomes Inactive After Spark Standalone Application Mode Finishes

I am very new to Spark and I am trying to run the SimpleApp.py in spark. When I use spark-shell ./b… Read more Sparkui Url Becomes Inactive After Spark Standalone Application Mode Finishes

Sparkexception: Python Worker Failed To Connect Back When Execute Spark Action

When I try to execute this command line at pyspark arquivo = sc.textFile('dataset_analise_senti… Read more Sparkexception: Python Worker Failed To Connect Back When Execute Spark Action

Pyspark: Create Maptype Column From Existing Columns

I need to creeate an new Spark DF MapType Column based on the existing columns where column name is… Read more Pyspark: Create Maptype Column From Existing Columns

Pyspark Numeric Window Group By

I'd like to be able to have Spark group by a step size, as opposed to just single values. Is th… Read more Pyspark Numeric Window Group By

Spark 2.2.2 - Joining Multiple Rdds Giving Out Of Memory Excepton. Resulting Rdd Has 124 Columns. What Should Be The Optimal Joining Method?

I have a file which has multiple values for each phone number. for example : phone_no circle operat… Read more Spark 2.2.2 - Joining Multiple Rdds Giving Out Of Memory Excepton. Resulting Rdd Has 124 Columns. What Should Be The Optimal Joining Method?