Package org.apache.hadoop.yarn.server.resourcemanager.placement

Class FairQueuePlacementUtils

java.lang.Object

org.apache.hadoop.yarn.server.resourcemanager.placement.FairQueuePlacementUtils

@Private
@Unstable
public final class FairQueuePlacementUtils
extends Object

Utility methods used by Fair scheduler placement rules. FairScheduler

Field Summary

Fields

Modifier and Type	Field	Description
protected static final String	DOT
protected static final String	DOT_REPLACEMENT
protected static final String	ROOT_QUEUE

Method Summary

Modifier and Type	Method	Description
protected static String	assureRoot(String queueName)	Assure root prefix for a queue name.
protected static String	cleanName(String name)	Replace the periods in the username or group name with "_dot_" and remove trailing and leading whitespace.
protected static boolean	isValidQueueName(String queueName)	Validate the queue name: it may not start or end with a DOT.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DOT

protected static final String DOT

See Also:

• Constant Field Values

DOT_REPLACEMENT

protected static final String DOT_REPLACEMENT

See Also:

• Constant Field Values

ROOT_QUEUE

protected static final String ROOT_QUEUE

See Also:

• Constant Field Values

Method Details

cleanName

protected static String cleanName(String name)

Replace the periods in the username or group name with "_dot_" and remove trailing and leading whitespace.

Parameters:

name - The name to clean

Returns:

The name with DOT replaced with DOT_REPLACEMENT

assureRoot

protected static String assureRoot(String queueName)

Assure root prefix for a queue name.

Parameters:

queueName - The queue name to check for the root prefix

Returns:

The root prefixed queue name

isValidQueueName

protected static boolean isValidQueueName(String queueName)

Validate the queue name: it may not start or end with a DOT.

Parameters:

queueName - The queue name to validate

Returns:

false if the queue name starts or ends with a DOT, true