Processing Large Data with Dask Dataframe

Processing Large Data with Dask Dataframe

At work we visualise and analyze typically very large data. In a typical day, this amounts to 65 million records and 20 GB of data. The volume of data can be challenging to analyze over a range of many days

At work we visualise and analyze typically very large data. In a typical day, this amounts to 65 million records and 20 GB of data. The volume of data can be challenging to analyze over a range of many days. The size of the data forces our analyses to be performed over a shorter period than we would like.

I recently discovered the Dask library, hence I wanted to write an article on it for anyone who wants to get started on this amazing tool.

We use the typical Python data toolkit for our ETL jobs. The sheer volume of data is too large for our standard toolsnumpy / pandas to handle. There are distributed computing frameworks, like Spark, that handles the heavy lifting. While Spark could handle the job, moving to Spark from the Python data toolkit is a radical change.

So here comes Dask!

What is Dask?

Dask is designed to extend the numpy and pandas packages to work on data processing problems that are too large to be kept in memory. It breaks the larger processing job into many smaller tasks that are handled by numpy or pandas and then it reassembles the results into a coherent whole. This happens behind a seamless interface that is designed to mimic the numpy / pandas interfaces.

python-programming data-science python machine-learning dask

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