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https://issues.apache.org/jira/browse/FLINK-18112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17453849#comment-17453849
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LiuZeshan commented on FLINK-18112:
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[~ym] Thanks very much for the ticket. We are very looking forward to using
this feature in production. Any update recently ?
> Approximate Task-Local Recovery -- Milestone One
> ------------------------------------------------
>
> Key: FLINK-18112
> URL: https://issues.apache.org/jira/browse/FLINK-18112
> Project: Flink
> Issue Type: New Feature
> Components: Runtime / Checkpointing, Runtime / Coordination, Runtime
> / Network
> Affects Versions: 1.12.0
> Reporter: Yuan Mei
> Priority: Minor
> Labels: auto-deprioritized-major, auto-unassigned
> Attachments: image-2021-12-06-16-39-21-604.png
>
>
> This is the Jira ticket for Milestone One of [FLIP-135 Approximate Task-Local
> Recovery|https://cwiki.apache.org/confluence/display/FLINK/FLIP-135+Approximate+Task-Local+Recovery]
> In short, in Approximate Task-Local Recovery, if a task fails, only the
> failed task restarts without affecting the rest of the job. To ease
> discussion, we divide the problem of approximate task-local recovery into
> three parts with each part only focusing on addressing a set of problems.
> This Jira ticket focuses on address the first milestone.
> Milestone One: sink recovery. Here a sink task stands for no consumers
> reading data from it. In this scenario, if a sink vertex fails, the sink is
> restarted from the last successfully completed checkpoint and data loss is
> expected. If a non-sink vertex fails, a regional failover strategy takes
> place. In milestone one, we focus on issues related to task failure handling
> and upstream reconnection.
>
> Milestone one includes two parts of change:
> *Part 1*: Network Part: how the failed task able to link to the upstream
> Result(Sub)Partitions, and continue processing data
> *Part 2*: Scheduling part, a new failover strategy to restart the sink only
> when the sink fails.
>
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