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Name node is in safe mode. Not able to leave
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In order to forcefully let the namenode leave safemode, following command should be executed:
bin/hadoop dfsadmin -safemode leave
You are getting Unknown command error for your command as -safemode isn't a sub-command for hadoop fs, but it is of hadoop dfsadmin.
Also after the above co...
How can we print line numbers to the log in java
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74
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Case insensitive regular expression without re.compile?
In Python, I can compile a regular expression to be case-insensitive using re.compile :
9 Answers
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What's the most efficient way to test two integer ranges for overlap?
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Explanation is here: stackoverflow.com/questions/325933/…
– Alex
Sep 5 '18 at 19:16
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How do I get my solution in Visual Studio back online in TFS?
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pydot and graphviz error: Couldn't import dot_parser, loading of dot files will not be possible
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Answer for pydot >= 1.1:
The incompatibility of (upstream) pydot has been fixed by 6dff94b3f1, and thus pydot >= 1.1 will be compatible with pyparsing >= 1.5.7.
Answer applicable to pydot <= 1.0.28:
For anyone else who comes across this, it is...
Convert Python dict into a dataframe
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I'm seeing pandas.core.common.PandasError: DataFrame constructor not properly called! from the first example
– allthesignals
Mar 29 '16 at 17:44
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How to merge a transparent png image with another image using PIL
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Using getResources() in non-activity class
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^Dororo, This is one of the most important comments I've ever read. Proper use of context is rarely if ever, discussed. I get the feeling I've had many an inexplicable bug because of it!
– Jonathan Dunn
Apr 13 '18 at 13:06
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Images can't contain alpha channels or transparencies
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