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Apache Spark: The number of cores vs. the number of executors
... Imagine a cluster with six nodes running NodeManagers, each
equipped with 16 cores and 64GB of memory. The NodeManager capacities,
yarn.nodemanager.resource.memory-mb and
yarn.nodemanager.resource.cpu-vcores, should probably be set to 63 *
1024 = 64512 (megabytes) and 15 respectively. We avoid allo...
What is the simplest SQL Query to find the second largest value?
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Differences in boolean operators: & vs && and | vs ||
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How do I check out version version/tag 1.1.4 of the rspec bundle ?
2 Answers
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Case insensitive searching in Oracle
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Since 10gR2, Oracle allows to fine-tune the behaviour of string comparisons by setting the NLS_COMP and NLS_SORT session parameters:
SQL> SET HEADING OFF
SQL> SELECT *
2 FROM NLS_SESSION_PARAMETERS
3 WHERE PARAMETER IN...
Appropriate datatype for holding percent values?
What is the best datatype for holding percent values ranging from 0.00% to 100.00%?
5 Answers
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Is it safe to resolve a promise multiple times?
I have an i18n service in my application which contains the following code:
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How can I use a local image as the base image with a dockerfile?
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You can use it without doing anything special. If you have a local image called blah you can d...
Get person's age in Ruby
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I know I'm late to the party here, but the accepted answer will break horribly when trying to w...
How to iterate a loop with index and element in Swift
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