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Showing posts with the label Apache Spark Sql

Pyspark: Split And Select Part Of The String Column Values

How can I select the characters or file path after the Dev\” and dev\ from the column in a spark D… Read more Pyspark: Split And Select Part Of The String Column Values

Pyspark. Transformer That Generates A Random Number Generates Always The Same Number

I am trying to measure the performance impact on having to copy a dataframe from scala to python an… Read more Pyspark. Transformer That Generates A Random Number Generates Always The Same Number

Assertionerror: Col Should Be Column

How to create a new column in PySpark and fill this column with the date of today? This is what I t… Read more Assertionerror: Col Should Be Column

Convert A Pandas Dataframe To A Pyspark Dataframe

I have a script with the below setup. I am using: 1) Spark dataframes to pull data in 2) Converting… Read more Convert A Pandas Dataframe To A Pyspark Dataframe

Selecting Empty Array Values From A Spark Dataframe

Given a DataFrame with the following rows: rows = [ Row(col1='abc', col2=[8], col3=[18]… Read more Selecting Empty Array Values From A Spark Dataframe

How To Use To_json And From_json To Eliminate Nested Structfields In Pyspark Dataframe?

This solution in theory, works perfectly for what I need, which is to create a new copied version o… Read more How To Use To_json And From_json To Eliminate Nested Structfields In Pyspark Dataframe?

How To Read Parquet Files Under A Directory Using Pyspark?

I have searched online and the solutions provided online didn't resolve my issue. I am trying t… Read more How To Read Parquet Files Under A Directory Using Pyspark?

Mode Of Row As A New Column In Pyspark Dataframe

Is it possible to add a new column based on the maximum of previous columns where the previous colu… Read more Mode Of Row As A New Column In Pyspark Dataframe

Pyspark Best Alternative For Using Spark Sql/df Withing A Udf?

I'm stuck in a process where I need to perform some action for each column value in my Datafram… Read more Pyspark Best Alternative For Using Spark Sql/df Withing A Udf?

Where Do You Need To Use Lit() In Pyspark Sql?

I'm trying to make sense of where you need to use a lit value, which is defined as a literal co… Read more Where Do You Need To Use Lit() In Pyspark Sql?

How To Make An Integer Index Row?

I have a DataFrame: +-----+--------+---------+ | usn|log_type|item_code| +-----+--------+--------… Read more How To Make An Integer Index Row?

Pyspark Converting An Array Of Struct Into String

I have the following dataframe in Pyspark +----+-------+-----+ … Read more Pyspark Converting An Array Of Struct Into String

How To Read Csv File With Additional Comma In Quotes Using Pyspark?

I am having some troubles reading the following CSV data in UTF-16: FullName, FullLabel, Type TEST.… Read more How To Read Csv File With Additional Comma In Quotes Using Pyspark?

How Do I Add A New Column To A Spark Dataframe (using Pyspark)?

I have a Spark DataFrame (using PySpark 1.5.1) and would like to add a new column. I've tried t… Read more How Do I Add A New Column To A Spark Dataframe (using Pyspark)?

Pyspark 2: Kmeans The Input Data Is Not Directly Cached

I don't know why I receive the message WARN KMeans: The input data is not directly cached, whi… Read more Pyspark 2: Kmeans The Input Data Is Not Directly Cached

Pyspark: Select Part Of The String(file Path) Column Values

Pyspark: Split and select part of the string column values How can I select the characters or file … Read more Pyspark: Select Part Of The String(file Path) Column Values

In Pyspark Is There Any Way To Dynamically Register Udf Using Functions Of Python Class Given At Run Time?

I am new to Python, so apologizing if there is any mistake in my approach I have a scenario where c… Read more In Pyspark Is There Any Way To Dynamically Register Udf Using Functions Of Python Class Given At Run Time?

How To Get 1000 Records From Dataframe And Write Into A File Using Pyspark?

I am having 100,000+ of records in dataframe. I want to create a file dynamically and push 1000 rec… Read more How To Get 1000 Records From Dataframe And Write Into A File Using Pyspark?

Hourly Aggregation In Pyspark

I'm looking for a way to aggregate by hour my data. I want firstly to keep only hours in my evt… Read more Hourly Aggregation In Pyspark

Pyspark Hive Context -- Read Table With Utf-8 Encoding

I have a table in hive, And I am reading that table in pyspark df_sprk_df from pyspark import Spark… Read more Pyspark Hive Context -- Read Table With Utf-8 Encoding