[jira] [Assigned] (FLINK-31005) Release Testing: Verify FLIP-281 Supports speculative execution of sinks

["Lijie Wang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-31005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lijie Wang reassigned FLINK-31005:
----------------------------------

    Assignee: Lijie Wang

> Release Testing: Verify FLIP-281 Supports speculative execution of sinks
> ------------------------------------------------------------------------
>
>                 Key: FLINK-31005
>                 URL: https://issues.apache.org/jira/browse/FLINK-31005
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Coordination
>            Reporter: Zhu Zhu
>            Assignee: Lijie Wang
>            Priority: Blocker
>             Fix For: 1.17.0
>
>
> This task aims to verify [FLIP-281 Supports speculative execution of sinks|https://issues.apache.org/jira/browse/FLINK-30725].
> The documentation can be found [here|https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/speculative_execution/#enable-sinks-for-speculative-execution] .
> Things to verify:
> 1. If a sink implements the decorative interface {{SupportsConcurrentExecutionAttempts}, Speculative executions can be performed, otherwise not. Sinks to verify includes SinkFunction, OutputFormat and Sink(V2).
> 2. These built-in sinks supports speculative execution: DiscardingSink, PrintSinkFunction, PrintSink, FileSink, FileSystemOutputFormat, HiveTableSink
> It's important to verify that the final data produced are correct and the operator chain is as expected, i.e. no unexpected chain-break.
> If it's hard to construct a case that speculative execution would happen, especially for those built-in sinks, the speculative execution configuration can be tuned to allow it easier to happen, e.g. set {{slow-task-detector.execution-time.baseline-lower-bound}} and {{slow-task-detector.execution-time.baseline-ratio}} to {{0}}.



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