github-mirrors/elasticsearch
1
0
Fork 0
mirror of https://github.com/elastic/elasticsearch.git synced 2025-04-24 15:17:30 -04:00
Code Issues Projects Releases Packages Wiki Activity

Script: Restore the scripting general cache (#79453)

Browse source 
Deprecate the script context cache in favor of the general cache.

Users should use the following settings:
`script.max_compilations_rate` to set the max compilation rate
  for user scripts such as filter scripts.  Certain script contexts
  that submit scripts outside of the control of the user are
  exempted from this rate limit.  Examples include runtime fields,
  ingest and watcher.

`script.cache.max_size` to set the max size of the cache.

`script.cache.expire` to set the expiration time for entries in
the cache.

Whats deprecated?
`script.max_compilations_rate: use-context`.  This special
setting value was used to turn on the script context-specific caches.

`script.context.$CONTEXT.cache_max_size`, use `script.cache.max_size`
instead.

`script.context.$CONTEXT.cache_expire`, use `script.cache.expire`
instead.

`script.context.$CONTEXT.max_compilations_rate`, use
`script.max_compilations_rate` instead.

The default cache size was increased from `100` to `3000`, which
was approximately the max cache size when using context-specific caches.

The default compilation rate limit was increased from `75/5m` to
`150/5m` to account for increasing uses of scripts.

System script contexts can now opt-out of compilation rate limiting
using a flag rather than a sentinel rate limit value.

7.16: Script: Deprecate script context cache #79508
Refs: #62899

7.16: Script: Opt-out system contexts from script compilation rate limit #79459
Refs: #62899
This commit is contained in:
Stuart Tettemer 2021-10-21 07:57:27 -05:00 • committed by GitHub
parent 78fcd0e1b4
commit 808b70d2f9
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
31 changed files with 990 additions and 117 deletions
Download patch file Download diff file Expand all files Collapse all files

12
docs/reference/scripting/using.asciidoc
View file

@ -120,12 +120,8 @@ the `multiplier` parameter without {es} recompiling the script.
}
----
For most contexts, you can compile up to 75 scripts per 5 minutes by default.
For ingest contexts, the default script compilation rate is unlimited. You
can change these settings dynamically by setting
`script.context.$CONTEXT.max_compilations_rate`. For example, the following
setting limits script compilation to 100 scripts every 10 minutes for the
{painless}/painless-field-context.html[field context]:
You can compile up to 150 scripts per 5 minutes by default.
For ingest contexts, the default script compilation rate is unlimited.
[source,js]
----
@ -406,8 +402,8 @@ small.
All scripts are cached by default so that they only need to be recompiled
when updates occur. By default, scripts do not have a time-based expiration.
You can change this behavior by using the `script.context.$CONTEXT.cache_expire` setting.
Use the `script.context.$CONTEXT.cache_max_size` setting to configure the size of the cache.
You can change this behavior by using the `script.cache.expire` setting.
Use the `script.cache.max_size` setting to configure the size of the cache.
NOTE: The size of scripts is limited to 65,535 bytes. Set the value of `script.max_size_in_bytes` to increase that soft limit. If your scripts are
really large, then consider using a