ForwardHashFunctionProvider (flink-cdc-parent 3.8-SNAPSHOT API)

java.lang.Object
- org.apache.flink.cdc.common.sink.ForwardHashFunctionProvider

All Implemented Interfaces:

Serializable, HashFunctionProvider<DataChangeEvent>
```
@Internal
public class ForwardHashFunctionProvider
extends Object
implements HashFunctionProvider<DataChangeEvent>
```
A HashFunctionProvider that preserves the upstream subtask distribution.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

ForwardHashFunctionProvider()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`HashFunction<DataChangeEvent>`	`getHashFunction(TableId tableId, Schema schema)`	Gets a hash function based on the given table ID and schema, to help `PrePartitionOperator` to shuffle `DataChangeEvent` to designated subtask.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ForwardHashFunctionProvider
```
public ForwardHashFunctionProvider()
```
- Method Detail
  - getHashFunction
```
public HashFunction<DataChangeEvent> getHashFunction(@Nullable
                                                     TableId tableId,
                                                     Schema schema)
```
    Description copied from interface: HashFunctionProvider
    
    Gets a hash function based on the given table ID and schema, to help PrePartitionOperator to shuffle DataChangeEvent to designated subtask.
    
    Specified by:
    
    getHashFunction in interface HashFunctionProvider<DataChangeEvent>
    
    Parameters:
    
    tableId - table ID
    
    schema - flink table schema
    
    Returns:
    
    hash function based on the given table ID and schema