[Question] [Compaction] - If --auto-compaction-mode=periodic is a default value?

[jujiale]

hello, I have a confusion about the config auto-compaction-mode
as the official doc say as below:

In v3.3.3, --auto-compaction-mode=revision --auto-compaction-retention=1000 automatically Compact on "latest revision" - 1000 every 5-minute (when latest revision is 30000, compact on revision 29000). Previously, --auto-compaction-mode=periodic --auto-compaction-retention=72h automatically Compact with 72-hour retention windown for every 7.2-hour. Now, Compact happens, for every 1-hour but still with 72-hour retention window.

and as the official doc Configuration options:

my etcd server version is 3.5.0

my etcd server config for compact is below:
--auto-compaction-retention 1
and I don't set the config --auto-compaction-mode

I want to know, if I don't set --auto-compaction-mode in my etcd config, if it don't has a default value, because I find in my test,
after 6min （6m is 1/10 of 1h）, the past revision is still exist, it didn't compact

if the --auto-compaction-mode default value is periodic , I think it should compact past revision in every 6min. but the result is not

so the conclusion, If I don't set the --auto-compaction-mode, the compact strategy is only determined by --auto-compaction-retention 1

is it right?

[jujiale]

resolved, found in code, thanks for community.

[jujiale]

Its my fault, etcd version has clarify the issue very clearly