elasticsearch - 需要了解搜索池elasticsearch

Question

Elasticsearch文档定义了搜索池:

For count/search operations, defaults to fixed, size 3x # of available processors. queue_size 1000.

因此，如果我有一个带有8核CPU的节点，那么它一次可以适应24个搜索操作。这是固定值。

但是我不明白“queue_size 1000”是什么意思。它如何影响搜索操作？

Answer 1

在official docs中进行了解释:

The queue_size allows to control the size of the queue of pending requests that have no threads to execute them. By default, it is set to -1 which means its unbounded. When a request comes in and the queue is full, it will abort the request.

将其设置为1000意味着您可以有1000个待处理的待处理请求。