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<h1 title="Package" class="title">Package&nbsp;org.apache.hadoop.yarn.util.constraint</h1>
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<div class="block">Package org.apache.hadoop.yarn.util.constraint contains classes
which is used as utility class for placement constraints.</div>
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<p>See:&nbsp;<a href="#package.description">Description</a></p>
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<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.ConstraintTokenizer.html" title="interface in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.ConstraintTokenizer</a></td>
<td class="colLast">
<div class="block">Tokenizer interface that used to parse an expression.</div>
</td>
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<th class="colFirst" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser</a></td>
<td class="colLast">
<div class="block">Placement constraint expression parser.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.BaseStringTokenizer.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.BaseStringTokenizer</a></td>
<td class="colLast">
<div class="block">A basic tokenizer that splits an expression by a given delimiter.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.CardinalityConstraintParser.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.CardinalityConstraintParser</a></td>
<td class="colLast">
<div class="block">Constraint parser used to parse a given target expression, such as
"cardinality, NODE, foo, 0, 1".</div>
</td>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.ConjunctionConstraintParser.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.ConjunctionConstraintParser</a></td>
<td class="colLast">
<div class="block">Parser used to parse conjunction form of constraints, such as
AND(A, ..., B), OR(A, ..., B).</div>
</td>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.ConjunctionTokenizer.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.ConjunctionTokenizer</a></td>
<td class="colLast">
<div class="block">Tokenizer used to parse conjunction form of a constraint expression,
[AND|OR](C1:C2:...:Cn).</div>
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</tr>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.ConstraintParser.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.ConstraintParser</a></td>
<td class="colLast">
<div class="block">Constraint Parser used to parse placement constraints from a
given expression.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.MultipleConstraintsTokenizer.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.MultipleConstraintsTokenizer</a></td>
<td class="colLast">
<div class="block">Tokenizer used to handle a placement spec composed by multiple
constraint expressions.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.NodeConstraintParser.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.NodeConstraintParser</a></td>
<td class="colLast">
<div class="block">Constraint parser used to parse a given target expression.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.SourceTags.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.SourceTags</a></td>
<td class="colLast">
<div class="block">A helper class to encapsulate source tags and allocations in the
placement specification.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.SourceTagsTokenizer.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.SourceTagsTokenizer</a></td>
<td class="colLast">
<div class="block">Tokenizer used to parse allocation tags expression, which should be
in tag(numOfAllocations) syntax.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParser.TargetConstraintParser.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParser.TargetConstraintParser</a></td>
<td class="colLast">
<div class="block">Constraint parser used to parse a given target expression, such as
"NOTIN, NODE, foo, bar".</div>
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<th class="colFirst" scope="col">Exception</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../../../org/apache/hadoop/yarn/util/constraint/PlacementConstraintParseException.html" title="class in org.apache.hadoop.yarn.util.constraint">PlacementConstraintParseException</a></td>
<td class="colLast">
<div class="block">Exception when the placement constraint parser fails to parse an expression.</div>
</td>
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<h2 title="Package org.apache.hadoop.yarn.util.constraint Description">Package org.apache.hadoop.yarn.util.constraint Description</h2>
<div class="block">Package org.apache.hadoop.yarn.util.constraint contains classes
which is used as utility class for placement constraints.</div>
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