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Showing posts with the label Apache Spark
Why Does Using Rank() Windowing Function Break The Parser?

Why Does Using Rank() Windowing Function Break The Parser?

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The windowing functions online docs for spark sql include the following example: https://databricks… Read more Why Does Using Rank() Windowing Function Break The Parser?
Spark Couldn't Find Window Function

Spark Couldn't Find Window Function

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Using the solution provided in https://stackoverflow.com/a/32407543/5379015 I tried to recreate the… Read more Spark Couldn't Find Window Function
Pyspark: Add The Average As A New Column To Dataframe

Pyspark: Add The Average As A New Column To Dataframe

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I am computing mean of a column in data-frame but it resulted in all the values zeros. Can someone … Read more Pyspark: Add The Average As A New Column To Dataframe
Spark-sql Window Functions On Dataframe - Finding First Timestamp In A Group

Spark-sql Window Functions On Dataframe - Finding First Timestamp In A Group

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I have below dataframe (say UserData). uid region timestamp a 1 1 a 1 2 a 1 3 a 1 … Read more Spark-sql Window Functions On Dataframe - Finding First Timestamp In A Group
Doing Some Of Columns Based On Some Complex Logic In Pyspark

Doing Some Of Columns Based On Some Complex Logic In Pyspark

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Here is the question in the image attached: Table: Row Col1 Col2 Col3 Result 1 10 … Read more Doing Some Of Columns Based On Some Complex Logic In Pyspark
Save A Spark Rdd To The Local File System Using Java

Save A Spark Rdd To The Local File System Using Java

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I have a RDD that is generated using Spark. Now if I write this RDD to a csv file, I am provided wi… Read more Save A Spark Rdd To The Local File System Using Java