本文整理了Java中org.apache.flink.api.common.accumulators.Accumulator.merge()方法的一些代码示例，展示了Accumulator.merge()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Accumulator.merge()方法的具体详情如下：
包路径：org.apache.flink.api.common.accumulators.Accumulator
类名称：Accumulator
方法名：merge

Accumulator.merge介绍

[英]Used by system internally to merge the collected parts of an accumulator at the end of the job.
[中]系统内部用于在作业结束时合并累加器的收集部分。

代码示例

代码示例来源：origin: apache/flink

/**
 * Workaround method for type safety.
 */
private static <V, R extends Serializable> Accumulator<V, R> mergeSingle(Accumulator<?, ?> target,
                                     Accumulator<?, ?> toMerge) {
  @SuppressWarnings("unchecked")
  Accumulator<V, R> typedTarget = (Accumulator<V, R>) target;
  @SuppressWarnings("unchecked")
  Accumulator<V, R> typedToMerge = (Accumulator<V, R>) toMerge;
  typedTarget.merge(typedToMerge);
  return typedTarget;
}

代码示例来源：origin: org.apache.flink/flink-core

/**
 * Workaround method for type safety.
 */
private static <V, R extends Serializable> Accumulator<V, R> mergeSingle(Accumulator<?, ?> target,
                                     Accumulator<?, ?> toMerge) {
  @SuppressWarnings("unchecked")
  Accumulator<V, R> typedTarget = (Accumulator<V, R>) target;
  @SuppressWarnings("unchecked")
  Accumulator<V, R> typedToMerge = (Accumulator<V, R>) toMerge;
  typedTarget.merge(typedToMerge);
  return typedTarget;
}

代码示例来源：origin: com.alibaba.blink/flink-core

/**
 * Workaround method for type safety.
 */
private static <V, R extends Serializable> Accumulator<V, R> mergeSingle(Accumulator<?, ?> target,
                                     Accumulator<?, ?> toMerge) {
  @SuppressWarnings("unchecked")
  Accumulator<V, R> typedTarget = (Accumulator<V, R>) target;
  @SuppressWarnings("unchecked")
  Accumulator<V, R> typedToMerge = (Accumulator<V, R>) toMerge;
  typedTarget.merge(typedToMerge);
  return typedTarget;
}

代码示例来源：origin: com.alibaba.blink/flink-runtime

@SuppressWarnings("unchecked")
void commitForTasks(JobVertexID jobVertexId, Accumulator value, Set<Integer> committedTasks) {
  checkArgument(this.jobVertexId.equals(jobVertexId), "The registered task belongs to different JobVertex with previous registered ones");
  if (aggregatedValue == null) {
    aggregatedValue = value.clone();
  } else {
    aggregatedValue.merge(value);
  }
  this.committedTasks.addAll(committedTasks);
}

代码示例来源：origin: com.alibaba.blink/flink-runtime

@SuppressWarnings("unchecked")
void commitForTask(JobVertexID jobVertexId, int subtaskIndex, Accumulator value) {
  checkArgument(this.jobVertexId.equals(jobVertexId),
    "The registered task belongs to different JobVertex with previous registered ones");
  checkState(registeredTasks.contains(subtaskIndex), "Can not commit for an accumulator that has " +
    "not been registered before");
  if (aggregatedValue == null) {
    aggregatedValue = value.clone();
  } else {
    aggregatedValue.merge(value);
  }
  committedTasks.add(subtaskIndex);
}