curcur commented on a change in pull request #18431: URL: https://github.com/apache/flink/pull/18431#discussion_r794274595
########## File path: docs/content/docs/ops/state/state_backends.md ########## @@ -325,6 +325,129 @@ public class MyOptionsFactory implements ConfigurableRocksDBOptionsFactory { {{< top >}} +## Enabling Changelog + +// todo: Chinese version of all changed docs + +// todo: mention in [large state tuning]({{< ref "docs/ops/state/large_state_tuning" >}})? or 1.16? + +{{< hint warning >}} This feature is in experimental status. {{< /hint >}} + +{{< hint warning >}} Enabling Changelog may have a negative performance impact on your application (see below). {{< /hint >}} + +### Introduction + +Changelog is a feature that aims to decrease checkpointing time and, therefore, end-to-end latency in exactly-once mode. + +Most commonly, checkpoint duration is affected by: + +1. Barrier travel time and alignment, addressed by + [Unaligned checkpoints]({{< ref "docs/ops/state/checkpointing_under_backpressure#unaligned-checkpoints" >}}) + and [Buffer debloating]({{< ref "docs/ops/state/checkpointing_under_backpressure#buffer-debloating" >}}) +2. Snapshot creation time (so-called synchronous phase), addressed by asynchronous snapshots Review comment: OK, I finally got what you said. Is there any reference you can use here? similar to Unaligned checkpoints and Buffer debloating? It would be too confusing otherwise. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org