org.apache.flink.table.runtime.operators.deduplicate

类 MiniBatchDeduplicateKeepFirstRowFunction

java.lang.Object

org.apache.flink.table.runtime.operators.bundle.MapBundleFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

org.apache.flink.table.runtime.operators.deduplicate.MiniBatchDeduplicateKeepFirstRowFunction

所有已实现的接口:

Serializable, org.apache.flink.api.common.functions.Function

public class MiniBatchDeduplicateKeepFirstRowFunction
extends MapBundleFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

This function is used to get the first row for every key partition in miniBatch mode.

另请参阅:

序列化表格

字段概要

从类继承的字段 org.apache.flink.table.runtime.operators.bundle.MapBundleFunction

ctx

构造器概要

构造器

构造器和说明
MiniBatchDeduplicateKeepFirstRowFunction(org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> typeSerializer, long minRetentionTime)

方法概要

限定符和类型	方法和说明
org.apache.flink.table.data.RowData	addInput(org.apache.flink.table.data.RowData value, org.apache.flink.table.data.RowData input) Adds the given input to the given value, returning the new bundle value.
void	finishBundle(Map<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData> buffer, org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out) Called when a bundle is finished.
void	open(ExecutionContext ctx)

从类继承的方法 org.apache.flink.table.runtime.operators.bundle.MapBundleFunction

close

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

MiniBatchDeduplicateKeepFirstRowFunction

public MiniBatchDeduplicateKeepFirstRowFunction(org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> typeSerializer,
                                                long minRetentionTime)

方法详细资料

open

public void open(ExecutionContext ctx)
          throws Exception

覆盖:

open 在类中 MapBundleFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

抛出:

Exception

addInput

public org.apache.flink.table.data.RowData addInput(@Nullable
                                                    org.apache.flink.table.data.RowData value,
                                                    org.apache.flink.table.data.RowData input)

从类复制的说明: MapBundleFunction

Adds the given input to the given value, returning the new bundle value.

指定者:

addInput 在类中 MapBundleFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

参数:

value - the existing bundle value, maybe null

input - the given input, not null

finishBundle

public void finishBundle(Map<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData> buffer,
                         org.apache.flink.util.Collector<org.apache.flink.table.data.RowData> out)
                  throws Exception

从类复制的说明: MapBundleFunction

Called when a bundle is finished. Transform a bundle to zero, one, or more output elements.

指定者:

finishBundle 在类中 MapBundleFunction<org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData,org.apache.flink.table.data.RowData>

抛出:

Exception