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Apache Spark: The number of cores vs. the number of executors
I'm trying to understand the relationship of the number of cores and the number of executors when running a Spark job on YARN.
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Bash ignoring error for a particular command
I am using following options
12 Answers
12
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How to know/change current directory in Python shell?
I am using Python 3.2 on Windows 7. When I open the Python shell, how can I know what the current directory is and how can I change it to another directory where my modules are?
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Determine which MySQL configuration file is being used
Is there a command to determine which configuration file MySQL 5.0 is currently using?
15 Answers
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Only get hash value using md5sum (without filename)
I use md5sum to generate a hash value for a file.
But i only need to receive the hash value, not the file name.
15 Answers
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Why is printing “B” dramatically slower than printing “#”?
I generated two matrices of 1000 x 1000 :
3 Answers
3
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How do you determine what SQL Tables have an identity column programmatically
I want to create a list of columns in SQL Server 2005 that have identity columns and their corresponding table in T-SQL.
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Array.push() if does not exist?
How can I push into an array if neither values exist? Here is my array:
23 Answers
23
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How do I find the duplicates in a list and create another list with them?
How can I find the duplicates in a Python list and create another list of the duplicates? The list only contains integers.
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