@InterfaceAudience.Public @InterfaceStability.Unstable public final class PlacementConstraintParser extends Object
Modifier and Type | Field and Description |
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static char |
EXPRESSION_VAL_DELIM |
Modifier and Type | Method and Description |
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static org.apache.hadoop.yarn.api.resource.PlacementConstraint.AbstractConstraint |
parseExpression(String constraintStr)
Parses a given constraint expression to a
PlacementConstraint.AbstractConstraint ,
this expression can be any valid form of constraint expressions. |
static Map<org.apache.hadoop.yarn.util.constraint.PlacementConstraintParser.SourceTags,PlacementConstraint> |
parsePlacementSpec(String expression)
Parses a placement constraint specification.
|
public static final char EXPRESSION_VAL_DELIM
public static org.apache.hadoop.yarn.api.resource.PlacementConstraint.AbstractConstraint parseExpression(String constraintStr) throws org.apache.hadoop.yarn.util.constraint.PlacementConstraintParseException
PlacementConstraint.AbstractConstraint
,
this expression can be any valid form of constraint expressions.constraintStr
- expression stringPlacementConstraint.AbstractConstraint
org.apache.hadoop.yarn.util.constraint.PlacementConstraintParseException
- when given expression
is malformedpublic static Map<org.apache.hadoop.yarn.util.constraint.PlacementConstraintParser.SourceTags,PlacementConstraint> parsePlacementSpec(String expression) throws org.apache.hadoop.yarn.util.constraint.PlacementConstraintParseException
Tag1(N1),P1:Tag2(N2),P2:...:TagN(Nn),Pn
where TagN(Nn) is a key value pair to determine the source allocation tag and the number of allocations, such as:foo(3)
Optional when using NodeAttribute Constraint. and where Pn can be any form of a valid constraint expression, such as:expression
- expression string.org.apache.hadoop.yarn.util.constraint.PlacementConstraintParseException
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