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What is an SSTable?
...ed in the form of SSTables.
SSTable (directly mapped to GFS) is key-value based immutable storage. It stores chunks of data, each is of 64KB.
Definitions:
Index of the keys: key and starting location
Chunk is a storage unit in GFS, replica management are by chunk
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What does Provider in JAX-RS mean?
...number of predefined providers that will be responsible for implementing a base level of functionality (e.g for mapping to and from XML, translating the most common exceptions etc etc). You can also create your own providers as needed.
The JAX-RS specification is a good reference for reading up on ...
Detect Click into Iframe using JavaScript
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Based on Mohammed Radwan's answer I came up with the following jQuery solution. Basically what it does is keep track of what iFrame people are hovering. Then if the window blurs that most likely means the user clicked the ifr...
Why is no one using make for Java?
...ke more of a make versus javac answer than a make versus ant/maven answer. Based on your answer, why couldn't someone just use make + javac (giving javac an entire package or "module" at a time, so circular dependencies are hidden from make)? Would ant or maven provide any benefit over that approach...
AngularJS: ng-repeat list is not updated when a model element is spliced from the model array
... app here (http://avinash.me/losh, source http://github.com/hardfire/losh) based on AngularJS. It is not very clean, but it might be of help.
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How would Git handle a SHA-1 collision on a blob?
...t enough): see "How is the git hash calculated?"): a blob SHA1 is computed based on the content and size.
See "Lifetimes of cryptographic hash functions" from Valerie Anita Aurora for more.
In that page, she notes:
Google spent 6500 CPU years and 110 GPU years to convince everyone we need to s...
What is “(program)” in Chrome debugger’s profiler?
... looks like the CPU Profiler part is like so many other profilers that are based on the same concepts as gprof.
For example, self is nearly a useless number unless there is something like a bubble-sort of a big array of numbers in some code that you can edit. Highly unlikely.
Total should include ...
Flatten nested dictionaries, compressing keys
...a kind of a "functional", "one-liner" implementation. It is recursive, and based on a conditional expression and a dict comprehension.
def flatten_dict(dd, separator='_', prefix=''):
return { prefix + separator + k if prefix else k : v
for kk, vv in dd.items()
for k, v...
What algorithms compute directions from point A to point B on a map?
...ns.
Arachnid described the usage of bidirectional search and edge pruning based on hierarchical information. These speedup techniques work quite well, but the most recent algorithms outperform these techniques by all means. With current algorithms a shortest paths can be computed in considerable le...
emacs/elisp: What is the hash (pound, number sign, octothorp) symbol used for?
...d Syntax for Circular Objects.
And then you have its use for denoting the base for integers, e.g. #x2c -> 44.
Plus more I'm sure.
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