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Name node is in safe mode. Not able to leave
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I'm using Hadoop 2.0.0-cdh4.1.1 When I ran the hadoop dfsadmin command, it gave me this: ______ DEPRECATED: Use of this script to execute hdfs command is deprecated. Instead use the hdfs command for it. Safe mode is OFF ______ ... but still ran. Seems ...
Java: random long number in 0
....apache.org/math/userguide/random.html
http://commons.apache.org/math/api-1.1/org/apache/commons/math/random/RandomData.html#nextLong(long,%20long)
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How can I check the system version of Android?
Does anyone know how can I check the system version (e.g. 1.0 , 2.2 , etc.) programatically?
13 Answers
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is there an virtual environment for node.js?
....1"}}
and then run:
npm bundle vendor
or if your npm version is >= 1.0 run:
npm install
to freeze into the vendor directory. and then use:
require.paths.unshift('./vendor');
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imp...
Reload Flask app when template file changes
...u can use
TEMPLATES_AUTO_RELOAD = True
From http://flask.pocoo.org/docs/1.0/config/
Whether to check for modifications of the template source and reload it automatically. By default the value is None which means that Flask checks original file only in debug mode.
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VSTS 2010 SGEN : error : Could not load file or assembly (Exception from HRESULT: 0x80131515)
...4.0 Tools
with this simple config as others have said
<?xml version ="1.0"?>
<configuration>
<runtime>
<loadFromRemoteSources enabled="true" />
</runtime>
</configuration>
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range() for floats
...y. Due to the curse of floating point arithmetics, for example frange(0.0, 1.0, 0.1) yields 11 values, where the last value is 0.9999999999999999. A practical improvement would be while x + sys.float_info.epsilon < y: although even this can probably fail with large numbers.
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How to take a screenshot programmatically on iOS
...csEndImageContext();
NSData *imageData = UIImageJPEGRepresentation(image, 1.0 ); //you can use PNG too
[imageData writeToFile:@"image1.jpeg" atomically:YES];
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How to use Python's pip to download and keep the zipped files for a package?
...dependencies and does not install any of them. (Note that prior to version 1.1 the --download option did not download dependencies.)
pip install package --download="/pth/to/downloaded/files"
The pip documentation outlines using --download for fast & local installs.
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What does the 'standalone' directive mean in XML?
... an example, consider the humble <img> tag. If you look at the XHTML 1.0 DTD, you see a markup declaration telling the parser that <img> tags must be EMPTY and possess src and alt attributes. When a browser is going through an XHTML 1.0 document and finds an <img> tag, it should no...