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java.lang.Object backtype.storm.testing.NGrouping
public class NGrouping
Constructor Summary | |
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NGrouping(int n)
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Method Summary | |
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java.util.List<java.lang.Integer> |
chooseTasks(int taskId,
java.util.List<java.lang.Object> values)
This function implements a custom stream grouping. |
void |
prepare(WorkerTopologyContext context,
GlobalStreamId stream,
java.util.List<java.lang.Integer> targetTasks)
Tells the stream grouping at runtime the tasks in the target bolt. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public NGrouping(int n)
Method Detail |
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public void prepare(WorkerTopologyContext context, GlobalStreamId stream, java.util.List<java.lang.Integer> targetTasks)
CustomStreamGrouping
prepare
in interface CustomStreamGrouping
public java.util.List<java.lang.Integer> chooseTasks(int taskId, java.util.List<java.lang.Object> values)
CustomStreamGrouping
chooseTasks
in interface CustomStreamGrouping
values
- the values to group on
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