EstimateProvider (Flink : Optimizer 1.19.2-cp2 API)

All Known Implementing Classes:

AbstractPartialSolutionNode, BinaryUnionNode, BulkIterationNode, BulkPartialSolutionNode, Channel, CoGroupNode, CoGroupRawNode, CrossNode, DagConnection, DataSinkNode, DataSourceNode, FilterNode, FlatMapNode, GroupCombineNode, GroupReduceNode, JoinNode, MapNode, MapPartitionNode, NamedChannel, NoOpNode, OptimizerNode, OuterJoinNode, PartitionNode, ReduceNode, SingleInputNode, SinkJoiner, SolutionSetNode, SortPartitionNode, TwoInputNode, UnaryOperatorNode, WorksetIterationNode, WorksetIterationNode.SingleRootJoiner, WorksetNode
```
public interface EstimateProvider
```
Methods for operators / connections that provide estimated about data size and characteristics.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`float`	`getEstimatedAvgWidthPerOutputRecord()`	Gets the estimated number of bytes per record.
`long`	`getEstimatedNumRecords()`	Gets the estimated number of records in the output of this node.
`long`	`getEstimatedOutputSize()`	Gets the estimated output size from this node.

- Method Detail
  - getEstimatedOutputSize
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long getEstimatedOutputSize()
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    Gets the estimated output size from this node.
    
    Returns:
    
    The estimated output size.
  - getEstimatedNumRecords
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long getEstimatedNumRecords()
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    Gets the estimated number of records in the output of this node.
    
    Returns:
    
    The estimated number of records.
  - getEstimatedAvgWidthPerOutputRecord
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float getEstimatedAvgWidthPerOutputRecord()
```
    Gets the estimated number of bytes per record.
    
    Returns:
    
    The estimated number of bytes per record.