How to use Dask on Databricks - Stack Overflow
Jun 4, 2019 · There is now a dask-databricks package from the Dask community which makes running Dask clusters alongside Spark/Photon on multi-node Databricks quick to set up. This …
Strategy for partitioning dask dataframes efficiently
Jun 20, 2017 · As of Dask 2.0.0 you may call .repartition(partition_size="100MB"). This method performs an object-considerate (.memory_usage(deep=True)) breakdown of partition size. It …
How to transform Dask.DataFrame to pd.DataFrame?
Aug 18, 2016 · Each partition in a Dask DataFrame is a Pandas DataFrame. Running df.compute() will coalesce all the underlying partitions in the Dask DataFrame into a single …
How to read a compressed (gz) CSV file into a dask Dataframe?
Oct 8, 2016 · It's actually a long-standing limitation of dask. Load the files with dask.delayed instead: import pandas as pd import dask.dataframe as dd from dask.delayed import delayed …
How to use all the cpu cores using Dask? - Stack Overflow
Jul 6, 2018 · I have a pandas series with more than 35000 rows. I want to use dask make it more efficient. However, I both the dask code and the pandas code are taking the same time. …
dask - Make Pandas DataFrame apply () use all cores? - Stack …
Jun 3, 2020 · As of August 2017, Pandas DataFame.apply() is unfortunately still limited to working with a single core, meaning that a multi-core machine will waste the majority of its compute …
Convert Pandas dataframe to Dask dataframe - Stack Overflow
Sep 27, 2016 · When I convert it into dask dataframe what should name and divisions parameter consist of: from dask import dataframe as dd …
python - Dask Dataframe: Get row count? - Stack Overflow
Mar 15, 2018 · Simple question: I have a dataframe in dask containing about 300 mln records. I need to know the exact number of rows that the dataframe contains. Is there an easy way to …
Slicing out a few rows from a `dask.DataFrame` - Stack Overflow
Mar 7, 2018 · Often, when working with a large dask.DataFrame, it would be useful to grab only a few rows on which to test all subsequent operations. Currently, according to Slicing a Dask …
How to create unique index in Dask DataFrame? - Stack Overflow
Jun 6, 2019 · import dask.dataframe as dd import pandas as pd # save some data into unindexed csv num_rows = 15 df = pd.DataFrame(range(num_rows), columns=['x']) …