Xoshiro is a family of fast, space-efficient and high quality PRNGs. It is considered the state-of-the-art (SOTA) family of non-cryptographic pseudo random number generators (PRNGs). The Rust crate rand_xoshiro (which is part of the popular Rust crate rand) has implementations of Xoshiro256Plus and Xoshiro256PlusPlus . Xoshiro256PlusPlus is a very good …
I countered the issue when using PySpark locally
(the issue can happen to a cluster as well).
It turned out to be caused by a misconfiguration of the environment variable JAVA_HOME in Docker.
PySpark: Exception: Java gateway process exited before sending the driver its port number
You can use Maven to download dependencies of Java packages without creating a Java project.
For example,
if you want to download all dependencies of arrow-jvm and arrow-memory
and build everything into a single fat jar (for easy use in other places),
you can first crate a file pom.xml …
PyJNIus is a simple-to-use Java interface for Python. However, JPype is a better alternative.
pip install Cython
pip install pyjnius
import os
os.environ["CLASSPATH"] = "/path/to/your.jar"
from jnius import autoclass
YourClass = autoclass(path.to.YourClass)
yourObj = YourClass()
Note: Avoid using the same …
JPype, py4j and PyJNIus are all good options for Java interface for Python. Jpype is easy to use and widely adopted. PyJNIus is an even easier solution compred to JPype. py4j is more complicated to use compared to JPype and PyJNIus, however, it has a better performance, generally speaking.
Not all jobs are suitable for parallel computing. The more comminication that threads has to make, the more dependent the jobs are and the less efficient the parallel computing is.
Generally speaking, commercial softwares (Mathematica, MATLAB and Revolution R, etc.) have very good support on parallel computing.
Please refer …