werner

werner has asked 4 questions and find answers to 38 problems.

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werner questions

Are AspectJ aspects Singletons?
How to check if unsupported parameter is contained in REST request?

werner answers

Pyspark Count includes Nulls
Dynamic evaluation of Boolean expressions in a Spark DataFrame
Differences: Object instantiation within mapPartitions vs outside
Shutdown Hook for spark batch application
See progress while "iterating" over Dataframe
Pyspark convert array of key/value structs into single struct
Calendarized cost by year and month in Spark
Update target column with optional source columns
How to get the N most recent dates in Pyspark
pyspark aggregate while find the first value of the group