[FLINK-25024] Add ChangelogBackend documentation

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.15.0
• Component/s: Documentation
• Labels: pull-request-available
• Assignee: Roman Khachatryan
• Reporter: Roman Khachatryan
• Created: 23/Nov/21 17:41
• Updated: 28/Jan/22 20:25
• Resolved: 28/Jan/22 20:25

Description

Currently, changelog backend is hidden from users documentation-wise.

Once the feature is ready, the following needs to be documented:

• General description (page https://nightlies.apache.org/flink/flink-docs-master/docs/ops/state/state_backends/ )
• Configuration (page https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/config/ - StateChangelogOptions, FsStateChangelogOptions)
• Uploader metrics (page https://nightlies.apache.org/flink/flink-docs-master/docs/ops/metrics/ , see FLINK-23486)

Issue Links

• is cloned by: FLINK-25867 [ZH] Add ChangelogBackend documentation
• links to: GitHub Pull Request #18431