69 lines
2.1 KiB
Plaintext
69 lines
2.1 KiB
Plaintext
[[index-modules]]
|
|
= Index Modules
|
|
|
|
[partintro]
|
|
--
|
|
Index Modules are modules created per index and control all aspects
|
|
related to an index. Since those modules lifecycle are tied to an index,
|
|
all the relevant modules settings can be provided when creating an index
|
|
(and it is actually the recommended way to configure an index).
|
|
|
|
[float]
|
|
[[index-modules-settings]]
|
|
== Index Settings
|
|
|
|
There are specific index level settings that are not associated with any
|
|
specific module. These include:
|
|
|
|
[[index-compound-format]]`index.compound_format`::
|
|
|
|
Should the compound file format be used (boolean setting).
|
|
The compound format was created to reduce the number of open
|
|
file handles when using file based storage. However, by default it is set
|
|
to `false` as the non-compound format gives better performance. It is important
|
|
that OS is configured to give Elasticsearch ``enough'' file handles.
|
|
See <<file-descriptors>>.
|
|
+
|
|
Alternatively, `compound_format` can be set to a number between `0` and
|
|
`1`, where `0` means `false`, `1` means `true` and a number inbetween
|
|
represents a percentage: if the merged segment is less than this
|
|
percentage of the total index, then it is written in compound format,
|
|
otherwise it is written in non-compound format. added[0.90.2]
|
|
|
|
[[index-compound-on-flush]]`index.compound_on_flush`::
|
|
|
|
Should a new segment (create by indexing, not by merging) be written
|
|
in compound format or non-compound format? Defaults to `true`.
|
|
This is a dynamic setting.
|
|
|
|
`index.refresh_interval`::
|
|
A time setting controlling how often the
|
|
refresh operation will be executed. Defaults to `1s`. Can be set to `-1`
|
|
in order to disable it.
|
|
|
|
--
|
|
|
|
include::index-modules/analysis.asciidoc[]
|
|
|
|
include::index-modules/allocation.asciidoc[]
|
|
|
|
include::index-modules/slowlog.asciidoc[]
|
|
|
|
include::index-modules/merge.asciidoc[]
|
|
|
|
include::index-modules/store.asciidoc[]
|
|
|
|
include::index-modules/mapper.asciidoc[]
|
|
|
|
include::index-modules/translog.asciidoc[]
|
|
|
|
include::index-modules/cache.asciidoc[]
|
|
|
|
include::index-modules/fielddata.asciidoc[]
|
|
|
|
include::index-modules/codec.asciidoc[]
|
|
|
|
include::index-modules/similarity.asciidoc[]
|
|
|
|
|