I’m trying to figure out how to put a specific value between two flag values, for example:

We are writing data frame to a directory like below in pySpark code.
Its writing with file name as “part-****”, is there anyway to get the name of the file in code after its written?

I have a large partitioned fact table and a small dimension table.
The partition column of the large table is the key column of the dimension table.
I would like to use the small table to reduce the number of partitions I read from the large table.
There is no condition other than that there has to be a small table record corresponding to each large table partition.
Both ‘INNER JOIN’ and ‘LEFT SEMI JOIN’ are acceptable here.

Inititaly I thought this was an easy problem, but I just can’t figure it out.
Here is a simplified example. I have 8 different people buying some items from a store. Afterwards I want to look at all the items and sort them into groups so that each overlapping initial shopping goes into the same new group.

I’ve installed pyspark using pip install pyspark command in CMD.

I am new to Apache Spark (Java) and am trying to create a text file consisting of multiple json objects that represent a combination of these two datasets. The firstToSecondGeneration is very long so I omitted some columns.

I have below Pyspark code to validate the field in nested json –