Elasticsearch计算总碎片的公式是什么 [英] Elasticsearch what are the formulas to calculate total shards

问题描述

我是Elasticsearch的新手，我发现计算总分片的标准方法是碎片总数=主要*(1个副本)

I am new to Elasticsearch and I found out the standard way to calculate total shards is total shards=primary * (1+replicas)

所以在这个例子中

PUT /my_index/_settings
{
  "number_of_shards": 3,
  "number_of_replicas": 2
}

答案为9.

total shards=primary * (1+replicas)
9=3 * (1+2)

我是否可以替代地使用下面的公式，因为它给出的答案与9相同?

May I know that alternatively can I use below formula too since it gives the same answer as 9?

total shards= number_of_shards + (number_of_shards * number_of_replicas)

推荐答案

这是一个数学问题，与ES无关.

This is a math question and has nothing to do with ES.

primary * (1 + replica) = primary + (primary * replica)

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