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From "Reuven Lax (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-2872) AvroIO.TypedWrite#to() method produces a compilation error
Date Sun, 10 Sep 2017 17:30:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-2872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16160416#comment-16160416
] 

Reuven Lax commented on BEAM-2872:
----------------------------------

I can't reproduce this.

This code is returning a raw type, so Java will produce an unchecked-assignment warning (returning
org.apache.beam.sdk.io.AvroIO.TypedWrite to org.apache.beam.sdk.io.AvroIO.TypedWrite<UserT,DestinationT,OutputT>).
However I do not see the error you posted.

> AvroIO.TypedWrite#to() method produces a compilation error
> ----------------------------------------------------------
>
>                 Key: BEAM-2872
>                 URL: https://issues.apache.org/jira/browse/BEAM-2872
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-java-core
>    Affects Versions: 2.2.0
>            Reporter: Stas Levin
>            Assignee: Reuven Lax
>
> The following code produces a compilation error when compiled using IntelliJ's {{Rebuild
Project}} command, or when compiling with maven under {{Java 1.7}}:
> {code:java}
> @Experimental(Kind.FILESYSTEM)
>     public <NewDestinationT> TypedWrite<UserT, NewDestinationT, OutputT>
to(
>         DynamicAvroDestinations<UserT, NewDestinationT, OutputT> dynamicDestinations)
{
>       return toBuilder()
>           .setDynamicDestinations((DynamicAvroDestinations) dynamicDestinations)
>           .build();
>     }
> {code}
> {code}
> Error:(999, 17) java: incompatible types
>   required: org.apache.beam.sdk.io.AvroIO.TypedWrite<UserT,NewDestinationT,OutputT>
>   found:    org.apache.beam.sdk.io.AvroIO.TypedWrite<UserT,DestinationT,OutputT>
> {code}
> Note: setting the environment to {{Java 1.8}} and compiling with maven does not produce
this error.



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