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From "Maximilian Michels (Jira)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-15504) Flink suppresses stdout/stderr during JobGraph generation from JAR
Date Wed, 29 Jan 2020 08:53:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-15504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17025701#comment-17025701

Maximilian Michels commented on FLINK-15504:

I think it is worth including a note in the release notes. It's not a breaking change but
it has been an annoyance to production users, so we should do our best to inform them.

> Flink suppresses stdout/stderr during JobGraph generation from JAR
> ------------------------------------------------------------------
>                 Key: FLINK-15504
>                 URL: https://issues.apache.org/jira/browse/FLINK-15504
>             Project: Flink
>          Issue Type: Bug
>          Components: Client / Job Submission
>            Reporter: Maximilian Michels
>            Assignee: Maximilian Michels
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.10.0
>          Time Spent: 20m
>  Remaining Estimate: 0h
> Flink uses the {{OptimizerPlanEnvironment}} which replaces stdout/stderr during job graph
creation. This was intended only for previewing the plan, but other parts of Flink, e.g. the
Rest API have started to use this code as well. 
> It may be acceptable to suppress output during plan preview, but we should not suppress
the output during execution, e.g. via the REST API.

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