list split批量处理

<dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-collections4</artifactId>
        <version>4.1</version>
      </dependency>

import org.apache.commons.collections4.ListUtils;

 List<List<Integer>> output = ListUtils.partition(largeList, targetSize);

 import org.apache.storm.shade.com.google.common.collect.Lists;

Lists.partition

storm-core-1.1.1.jar

import com.google.common.collect.Lists;

  private static final int BATCH_SIZE = 10_000;


  public void addUitids(final String portfolioId, List<String> uitids) {
    logger.info("Adding {} uitids to portfolio {}", uitids.size(), portfolioId);

    if (!uitids.isEmpty()) {
      Lists.partition(uitids, BATCH_SIZE).stream()
          .map(chunk -> createPortfolioUpdateRequest(false, chunk))
          .forEach(i -> notificationService.putNotification(i, portfolioUpdatePath, portfolioId));
    }
  }

<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>26.0-jre</version>
</dependency>

https://www.jianshu.com/p/447a26a6127d