object Utils extends Logging
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- def createDirectory(root: String): File
Create a directory inside the given parent directory.
Create a directory inside the given parent directory. The directory is guaranteed to be newly created, and is not marked for automatic deletion.
- def createTempDir(root: String = System.getProperty("java.io.tmpdir")): File
Create a temporary directory inside the given parent directory.
Create a temporary directory inside the given parent directory. The directory will be automatically deleted when the VM shuts down.
- def deleteRecursively(file: File): Unit
Delete a file or directory and its contents recursively.
Delete a file or directory and its contents recursively. Don't follow directories if they are symlinks. Throws an exception if deletion is unsuccessful.
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- def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
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- def initializeLogIfNecessary(isInterpreter: Boolean): Unit
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- def isBindCollision(exception: Throwable): Boolean
Return whether the exception is caused by an address-port collision when binding.
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- def isSymlink(file: File): Boolean
Check to see if file is a symbolic link.
- def isTraceEnabled(): Boolean
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- def registerShutdownDeleteDir(file: File): Unit
- def shutDownCleanUp(): Unit
- def startServiceOnPort[T](startPort: Int, startService: (Int) => (T, Int), conf: SparkConf, serviceName: String = ""): (T, Int)
Attempt to start a service on the given port, or fail after a number of attempts.
Attempt to start a service on the given port, or fail after a number of attempts. Each subsequent attempt uses 1 + the port used in the previous attempt (unless the port is 0).
- startPort
The initial port to start the service on.
- startService
Function to start service on a given port. This is expected to throw java.net.BindException on port collision.
- conf
A SparkConf used to get the maximum number of retries when binding to a port.
- serviceName
Name of the service.
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