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Spark java.lang.OutOfMemoryError: Java heap space
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Have a look at the start up scripts a Java heap size is set there, it looks like you're not setting this before running Spark worker.
# Set SPARK_MEM if it isn't already set since we also use it for this process
SPARK_MEM=${SPARK_MEM:-512m}
export SPAR...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
...e-vs-queryselectorall/25. Conclusion : one should far more prefer pure javascript than jquery, and the specific functions getElementById and getElementsByClassName. The className selection can be few hundreds times slower without getElementsByClassName.
– Atrahasis
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Batch files - number of command line arguments
Just converting some shell scripts into batch files and there is one thing I can't seem to find...and that is a simple count of the number of command line arguments.
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How to delete images from a private docker registry?
...lly removing the reference to the associated images. Then you can run this script to remove all images, that are not referenced by any tag or the ancestry of any used image.
Terminology (images and tags)
Consider an image graph like this where the capital letters (A, B, ...) represent short image ...
How to make a chain of function decorators?
...But remember decorators are called only once. Just when Python imports the script. You can't dynamically set the arguments afterwards. When you do "import x", the function is already decorated, so you can't
change anything.
Let’s practice: decorating a decorator
Okay, as a bonus, I'll give you...
How to exit from the application and show the home screen?
...needs internet and the connection breaks a few activities into the app. An alert dialog can be displayed (without buttons). The Back button needs to exit the entire app since reentry requires login/initialization again. System.exit is the only thing that works reasonably I've found. Not sure about @...
Best algorithm for detecting cycles in a directed graph [closed]
...opological_sorting
has the pseudo-code for one algorithm, and a brief description of another from Tarjan. Both have O(|V| + |E|) time complexity.
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PHP - include a php file and also send query parameters
I have to show a page from my php script based on certain conditions. I have an if condition and am doing an "include" if the condition is satisfied.
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Regular Expression to reformat a US phone number in Javascript
...lace(/\D+/g, '')
.replace(/(\d{3})(\d{3})(\d{4})/, '($1) $2-$3');
alert(x);
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warning about too many open figures
In a script where I create many figures with fix, ax = plt.subplots(...) , I get the warning RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (matplotlib.pyplot.figure) are retained until explicitly closed and may consume too much memory.
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