Nick Chammas

Nick Chammas has asked 24 questions and find answers to 24 problems.

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Notable posts:

Debunking a persistent SQL Server myth about TRUNCATE.
Debunking another SQL Server myth about variable declarations causing proc recompiles.
Understanding how certain SQL Server functions dynamically cast their output.
Using a recursive CTE to find the first ancestor in a hierarchy to satisfy certain conditions.

Nick Chammas questions

BaseEventLoop.run_in_executor() throws "unexpected keyword argument 'callback'" starting in Python 3.5
SqlDataReader.RecordsAffected incorrectly returns -1 when using INSERT...OUTPUT.inserted
Suppress messages from spark-submit when loading packages
How do Spark scheduler pools work when running on YARN?
Why is this Bash script not inheriting all environment variables?
How do I keep my stored procedure inputs from being silently truncated?
Copying one file to multiple remote hosts in parallel over SFTP
Programmatically determine number of cores and amount of memory available to Spark
Did something about `namedtuple` change in 3.5.1?
What's the correct way to clean up after an interrupted event loop?

Nick Chammas answers

pyspark: count number of rows written
SqlDataReader.RecordsAffected incorrectly returns -1 when using INSERT...OUTPUT.inserted
How to save a DataFrame as compressed (gzipped) CSV?
How do Spark scheduler pools work when running on YARN?
Why is this Bash script not inheriting all environment variables?
pyspark - getting Latest partition from Hive partitioned column logic
How to use TwitterUtils in Spark shell?
Is there a way to make a column's nullability depend on another column's nullability?
What are the differences between slices and partitions of RDDs?
How to fully utilize all Spark nodes in cluster?