...e leave hadoop dfsadmin has been deprecated and so is hadoop fs command, all hdfs related tasks are being moved to a separate command hdfs. share | improve this answer | f...

...a_home) I haven't experienced any problems with that technique. Occasionally I do have to change the value of JAVA_HOME to an earlier version of Java. For example, one program I'm maintaining requires 32-bit Java 5 on OS X, so when using that program, I set JAVA_HOME by running: export JAVA_HOM...

... But also throws if your input isn't all in the form "something=somethingelse". – Dan Olson Mar 1 '09 at 22:17 1 ...

...1. Only 128-bits are available and 5 bits are used to specify the type, so all of the hash bits don't make it into the UUID. (Also MD5 is considered cryptographically broken, and SHA1 is on its last legs, so don't use this to verify data that needs to be "very secure"). That said, it gives you a wa...

...upports a limited subset of ALTER TABLE. The ALTER TABLE command in SQLite allows the user to rename a table or to add a new column to an existing table. It is not possible to rename a column, remove a column, or add or remove constraints from a table. You can: create new table as the one you ar...

... It's called lazy loading because, like a lazy person, you are putting off doing something you don't want to. The opposite is Eager Loading, where you load something right away, long before you need it. If you are curious why peop...

...e getter method behind the expression is executed everytime when the code calls ValueExpression#getValue(). This will normally be invoked one or two times per JSF request-response cycle, depending on whether the component is an input or output component (learn it here). However, this count can get ...

... @Renato: what are you talking about? This answer isn't dangerous at all. Do you think that math.factorial returns a float, and not an arbitrary-precision integer, maybe? – DSM Mar 25 '13 at 19:03 ...

...ther_long_identifier and here_is_another_long_identifier != and_finally_another_long_name): # ... your code here ... pass share | improve this answer | follo...

... 参考：https://stackoverflow.com/questions/23537187/stackwalker-loads-all-symbol-files-but-still-doesnt-symbolicate-anything