... To hopefully make all of this a little more concrete, here’s a worked example of configuring a Spark app to use as much of the cluster as possible: Imagine a cluster with six nodes running NodeManagers, each equipped with 16 cores and 64GB o...

... within the app's data directory with filesystem permissions set that only allow the UID that the specific application runs with to access them. So, they are private in so much as Linux file permissions restrict access to them, the same as on any Linux/Unix system. Anyone with root level access to ...

... It seems mysql_config is missing on your system or the installer could not find it. Be sure mysql_config is really installed. For example on Debian/Ubuntu you must install the package: sudo apt-get install libmysqlclient-dev Maybe the mysql_config is not in your path, it will be ...

... If grep is supplied with multiple file names, it will automatically display the file names before the match, but it will leave the file name out in case of a single input file. By using /dev/null as an extra input file grep "thinks" it dealing with multiple files, but /dev/null is of cou...

... Basically, you need to clear out the transport tokens. This can happen if you were to close out of Xcode while in the middle of submitting an app to iTunes Connect. The token files now appear in the Library/Caches/com.apple.amp.i...

...at field must exist first in a different table (the parent table). That is all an FK is by definition. Null by definition is not a value. Null means that we do not yet know what the value is. Let me give you a real life example. Suppose you have a database that stores sales proposals. Suppose furth...

... There is a little difference. Object.getOwnPropertyNames(a) returns all own properties of the object a. Object.keys(a) returns all enumerable own properties. It means that if you define your object properties without making some of them enumerable: false these two methods will give you the sa...

...the suggested way to commit is the combined git commit -a, but you can mentally add a git add to the change block to understand the flow. Lastly, the reason why push is a separate command is because of git's philosophy. git is a distributed versioning system, and your local working directory is your...

.... The functions debug(), info(), warning(), error() and critical() will call basicConfig() automatically if no handlers are defined for the root logger. This function does nothing if the root logger already has handlers configured for it. It seems like ipython notebook call basicConfig ...

...t and slept on me. Is there a way to resume the operation without redoing all of the initial work? 4 Answers ...