Package org.apache.flink.autoscaler
Class JobVertexScaler<KEY,Context extends JobAutoScalerContext<KEY>>
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- org.apache.flink.autoscaler.JobVertexScaler<KEY,Context>
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public class JobVertexScaler<KEY,Context extends JobAutoScalerContext<KEY>> extends java.lang.Object
Component responsible for computing vertex parallelism based on the scaling metrics.
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Field Summary
Fields Modifier and Type Field Description protected static java.lang.String
INEFFECTIVE_MESSAGE_FORMAT
protected static java.lang.String
INEFFECTIVE_SCALING
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Constructor Summary
Constructors Constructor Description JobVertexScaler(AutoScalerEventHandler<KEY,Context> autoScalerEventHandler)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description int
computeScaleTargetParallelism(Context context, org.apache.flink.runtime.jobgraph.JobVertexID vertex, java.util.Map<ScalingMetric,EvaluatedScalingMetric> evaluatedMetrics, java.util.SortedMap<java.time.Instant,ScalingSummary> history)
protected static int
scale(int parallelism, int numKeyGroups, double scaleFactor, int minParallelism, int maxParallelism)
protected void
setClock(java.time.Clock clock)
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Field Detail
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INEFFECTIVE_SCALING
@VisibleForTesting protected static final java.lang.String INEFFECTIVE_SCALING
- See Also:
- Constant Field Values
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INEFFECTIVE_MESSAGE_FORMAT
@VisibleForTesting protected static final java.lang.String INEFFECTIVE_MESSAGE_FORMAT
- See Also:
- Constant Field Values
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Constructor Detail
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JobVertexScaler
public JobVertexScaler(AutoScalerEventHandler<KEY,Context> autoScalerEventHandler)
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Method Detail
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computeScaleTargetParallelism
public int computeScaleTargetParallelism(Context context, org.apache.flink.runtime.jobgraph.JobVertexID vertex, java.util.Map<ScalingMetric,EvaluatedScalingMetric> evaluatedMetrics, java.util.SortedMap<java.time.Instant,ScalingSummary> history)
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scale
@VisibleForTesting protected static int scale(int parallelism, int numKeyGroups, double scaleFactor, int minParallelism, int maxParallelism)
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setClock
@VisibleForTesting protected void setClock(java.time.Clock clock)
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