[jira] [Updated] (FLINK-20521) Null result values are being swallowed by RPC system

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-20521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-20521:
-----------------------------------
    Labels: pull-request-available  (was: )

> Null result values are being swallowed by RPC system
> ----------------------------------------------------
>
>                 Key: FLINK-20521
>                 URL: https://issues.apache.org/jira/browse/FLINK-20521
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Coordination
>    Affects Versions: 1.12.0, 1.11.2
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.13.0, 1.12.1
>
>
> If an RPC method returns a {{null}} value, then it seems that the request future won't get completed as reported in FLINK-17921.
> We should either not allow to return {{null}} values as responses or make sure that a {{null}} value is properly transmitted to the caller.



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