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Name node is in safe mode. Not able to leave
...d:
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 command, I would suggest you to once run hadoop fsck so that any inconsistencies crept in the hdfs mig...
Can constructors throw exceptions in Java?
...
@Ghilteras: Whereas I'd definitely rather express errors through the language-idiomatic way of expressing them: which is through exceptions in Java. To my mind, avoiding that idiom is where code gymnastics come in. Likewise mocking is far more effective when you've already u...
How do I get my solution in Visual Studio back online in TFS?
...n solution, there is go online option and
when i choose it that gives this error message: "The solution is
offline because its associated Team Foundation Server is offline.
Unable to determine the workspace for this solution."
Then from File -> Source Control -> Advanced -> Change Source ...
Convert Python dict into a dataframe
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The error here, is since calling the DataFrame constructor with scalar values (where it expects values to be a list/dict/... i.e. have multiple columns):
pd.DataFrame(d)
ValueError: If using all scalar values, you must must pass...
Any reason why scala does not explicitly support dependent types?
...icitly[foo1.Bar =:= foo2.Bar] // Not OK: unequal types
<console>:11: error: Cannot prove that foo1.Bar =:= foo2.Bar.
implicitly[foo1.Bar =:= foo2.Bar]
In my view, the above should be enough to answer the question "Is Scala a dependently typed language?" in the positive: it's cl...
“CASE” statement within “WHERE” clause in SQL Server 2008
..."CASE" statement within "WHERE" clause. But SQL Server 2008 is giving some errors while executing it. Can anyone please help me with the correct query? Here is the query:
...
Check if the number is integer
... @PatrickT You are in the realm of machine dependent rounding errors. In that respect my solution is the same as the accepted one 1.0000000000000001 == 1L [1] TRUE. But my solution is better if you already get a number in string form check.integer("1000000000000000000000000000000000001...
How to add parameters to a HTTP GET request in Android?
...ic void whenSuccess(ResponseHendler<YourResponseType> rh){
LOGGER.error("Status code: " + rh.getStatusCode() + ", Error msg: " + rh.getErrorText());
}
Note: There are many useful methods to manipulate your response.
...
What is the $$hashKey added to my JSON.stringify result
... was then rendered by an ng-repeat. I was getting angular 'duplicate key' errors when using JSON.parse(JSON.stringify(obj)) to clone my element. Using JSON.parse(angular.toJson(obj)); fixed things. Thanks!
– SAL
Nov 16 '16 at 15:17
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Laravel Check If Related Model Exists
... doesn't work for a morphTo relationship that doesn't exist. It gets a SQL error.
– Charles Wood
Aug 26 at 18:21
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