不爲也 比不能也

A number of changes have been made to mappings to remove ambiguity and to ensure that conflicting mappings cannot be created.모호함을 제거하고, mapping의 충돌이 일어나지 않도록 하기 위해, mapping에 많은 변경이 있었다.One major change is that dynamically added fields must have their mapping confirmed by the master node before indexing continues. This is to avoid a problem where different shards in the same index dynamically add..

In the same way that mget allows us to retrieve multiple documents at once, the bulk API allows us to make multiple create, index, update, or delete requests in a single step. This is particularly useful if you need to index a data stream such as log events, which can be queued up and indexed in batches of hundreds or thousands.mget 이 다수의 document를 한번에 가져오는 것과 마찬가지로, bulk API는 다수의 create, index,..

When dealing with numbers in this chapter, we have so far searched for only exact numbers. In practice, filtering on ranges is often more useful. For example, you might want to find all products with a price greater than $20 and less than $40.이 장에서 number를 다룰 때, 지금까지는 정확한 수만을 검색했었다. 실제로는, 범위를 filtering하는 것이 때때로 더 유용하다. 예를 들어, 가격이 $20보다 크고 $40보다 작은 모든 상품을 찾아보자.In SQL terms, a range can be express..

In their simplest form, synonyms are listed as comma-separated values:가장 단순한 형태로, 동의어는, 다음과 같이, comma로 구분된 값으로 나열된다."jump,leap,hop"If any of these terms is encountered, it is replaced by all of the listed synonyms. For instance:이들 단어 중 하나를 만나면, 그것은 나열된 동의어 모두로 대체된다. 예를 들자면,Original terms: Replaced by: ──────────────────────────────── jump → (jump,leap,hop) leap → (jump,leap,hop) hop → (jump,leap..