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Difference between Hive internal tables and external tables?
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Hive has a relational database on the master node it uses to keep track of state.
For instance, when you CREATE TABLE FOO(foo string) LOCATION 'hdfs://tmp/';, this table schema is stored in the database.
If you have a partitioned table, the partitions are stored in the data...
Windows batch files: .bat vs .cmd?
As I understand it, .bat is the old 16-bit naming convention, and .cmd is for 32-bit Windows, i.e., starting with NT. But I continue to see .bat files everywhere, and they seem to work exactly the same using either suffix. Assuming that my code will never need to run on anything older than NT, d...
Should methods that throw RuntimeException indicate it in method signature?
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I would not declare an unchecked exception in the signature, since it is misleading to the user of that API. It is no longer obvious whether the exception has to be explicitly handled.
Declaring it in the javadoc is a better approach since it allows someone to handle it if they think it is...
Is there an alternative to bastard injection? (AKA poor man's injection via default constructor)
... understand, this question relates to how to expose a loosely coupled API with some appropriate defaults. In this case, you may have a good Local Default, in which case the dependency can be regarded as optional. One way to deal with optional dependencies is to use Property Injection instead of Cons...
Global Git ignore
I want to set up Git to globally ignore certain files.
12 Answers
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How to retry after exception?
I have a loop starting with for i in range(0, 100) . Normally it runs correctly, but sometimes it fails due to network conditions. Currently I have it set so that on failure, it will continue in the except clause (continue on to the next number for i ).
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Exposing a port on a live Docker container
...ruction inside a Dockerfile to expose a port, and I can use the -p flag with docker run to assign ports, but once a container is actually running, is there a command to open/map additional ports live?
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How to check if a string in Python is in ASCII?
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It's not inefficient. all() will short-circuit and return False as soon as it encounters an invalid byte.
– John Millikin
Oct 13 '08 at 20:03
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setImmediate vs. nextTick
...introduced setImmediate . The API changes documentation suggests using it when doing recursive nextTick calls.
7 Answ...
How do I know if a generator is empty from the start?
Is there a simple way of testing if the generator has no items, like peek , hasNext , isEmpty , something along those lines?
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