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PySpark DataFrame ordering based on multiple columns
How to deal with the requirement to order a DataFrame using more than one column simultaneously? Also, consider some values…
How to retain the first row of each ‘group’ in a PySpark DataFrame?
For a given dataframe, with multiple occurrence of a particular column value, one may desire to retain only one (or…
Installing ‘s3cmd’ on centOS 7+
AWS S3 is one of the oldest offerings for ‘object storage’, from Amazon AWS and when working through a terminal,…
How to split contents of a column into *only two* by a delimiter?
While working with PySpark, I came across a requirement, where data in a column had to be split using delimiters…
Change java for Cloudera cluster using ambari
If you are using Hortonworks (presently Cloudera) cluster, the default value for java is Oracle JDK 1.8. If you have…
How to encrypt files before sharing online?
As a Data Engineer, one faces the need to share files securely over the internet. An easy way of doing…
Optimized Import of Text Data for Analytics
Text data analysis is a staple use case for the Data Analytics world! There are multiple firms which enable capture…
