elasticsearch – Page 3 – Türker Yıldırım

Elasticsearch 7.10 is the last Apache-licensed one

NoteJanuary 4, 20212 min read

The licence changed in January from Apache 2.0 to a dual SSPL and Elastic License arrangement, which is a legal event with an infrastructure consequence. For an internal…

Elasticsearch aliases, from the first index

NoteNovember 3, 20202 min read

A mapping change usually cannot be applied in place, so it means a new index — and if the application names the index directly, that is a coordinated…

An index template before the first document

NoteMay 21, 20202 min read

Field types are decided by whichever document arrives first, so a field that is an integer in one service and a string in another is rejected in the…

The default shard count is one now, and it was five

NoteAugust 5, 20191 min read

7.0 changed the default primary shard count from five to one, which is a considerable behavioural change hidden in a release note. The old default was widely agreed…

An index template before the first document, or reindex later

NoteJune 12, 20192 min read

Field types are decided by whichever document arrives first, so a field that is an integer in one service and a string in another is rejected in the…

Reindex behind an alias with no downtime

SnippetMay 30, 20191 min read

Elasticsearch 7 has no mapping types, and the URL changed

NoteMay 7, 20192 min read

6.x allowed one type per index and 7 removes them entirely, which changes every document and search URL in every client. The reason is that fields with the…

Elasticsearch 7 removed mapping types

Deep diveApril 30, 201910 min read

One type per index in 6, none at all in 7, and every query URL changes. The reindex cannot be done in place — and the default shard…

An alias in front of every index, from the first day

NoteApril 19, 20192 min read

A mapping change usually cannot be applied in place, so it means building a new index — and if the application names the index directly, that is a…

An Elasticsearch index can only have one mapping type now

NoteNovember 23, 20182 min read

6.x allows one type per index and 7 removes types entirely, which breaks the common pattern of putting orders and customers in the same index with a type…