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From "Aljoscha Krettek (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-2067) Chained streaming operators should not throw chained exceptions
Date Mon, 03 Apr 2017 12:19:41 GMT

     [ https://issues.apache.org/jira/browse/FLINK-2067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Aljoscha Krettek updated FLINK-2067:
    Component/s:     (was: Streaming)
                 DataStream API

> Chained streaming operators should not throw chained exceptions
> ---------------------------------------------------------------
>                 Key: FLINK-2067
>                 URL: https://issues.apache.org/jira/browse/FLINK-2067
>             Project: Flink
>          Issue Type: Bug
>          Components: DataStream API
>            Reporter: Stephan Ewen
> The exceptions that come from chained operators have an non-intuitive chaining structure,
that makes the stack traces harder to understand.
> For every chained task, there is a "Failed to forward record" exception, before the actual
exception comes as a cause.
> In the Batch API, we use a special "ExceptionInChainedStubException" that is recognized
and un-nested to make chained operator exceptions surface as root exceptions. 
> We should do the same for the streaming API.

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