如何通过Java API将scroll_size设置为_update_by_query请求

Question

我找到了有关“通过查询更新”请求的文档

https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/java-docs-update-by-query.html

问题是：如何在“ _update_by_query”查询中添加URL参数：

我添加的示例：

pre_production / _update_by_query？slices = 200＆scroll_size = 1000

如何添加这两个参数（切片，scroll_size）以使用JAVA Api？

Answer 1

You can use the UpdateByQueryRequestBuilder instance in order to modify the number of slices:

UpdateByQueryRequestBuilder updateByQuery =
  UpdateByQueryAction.INSTANCE.newRequestBuilder(client);
updateByQuery.source("source_index")
    .source()
    .setSlices(200);                 <--- set the number of slices

However, to change the scroll_size parameter you need to access the underlying UpdateByQueryRequest instance as the builder doesn't have any setBatchSize() method. You can do it like this:

((UpdateByQueryRequest) updateByQuery.getRequest()).setBatchSize(1000);