[jira] [Assigned] (FLINK-16684) StreamingFileSink builder does not work with Scala

["Till Rohrmann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-16684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann reassigned FLINK-16684:
-------------------------------------

    Assignee: Till Rohrmann

> StreamingFileSink builder does not work with Scala
> --------------------------------------------------
>
>                 Key: FLINK-16684
>                 URL: https://issues.apache.org/jira/browse/FLINK-16684
>             Project: Flink
>          Issue Type: Bug
>          Components: API / Scala, Connectors / FileSystem
>    Affects Versions: 1.10.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Critical
>             Fix For: 1.10.1, 1.11.0
>
>
> The {{StreamingFileSink}} builders don't work with Scala as they lose with every {{with*}} method more type information. For example, the following example does not compile:
> {code}
> val sink = StreamingFileSink.forRowFormat(new Path("s3a://123"), new Encoder[String] {
>       override def encode(element: String, stream: OutputStream): Unit = ???
>     }).withRollingPolicy(
>       DefaultRollingPolicy.builder()
>         .withRolloverInterval(TimeUnit.MINUTES.toMinutes(5))
>         .withInactivityInterval(TimeUnit.MINUTES.toMinutes(5))
>         .withMaxPartSize(128 * 1024 * 1024)
>         .build()
>     ).withBucketAssigner(
>       new BucketAssigner[String, String] {
>         override def getBucketId(element: String, context: BucketAssigner.Context): String = ???
>         override def getSerializer: SimpleVersionedSerializer[String] = ???
>       }
>     ).build();
> {code}
> The problem seems to be that Scala does type inference slightly differently than Java. I believe that the unspecified {{RowFormatBuilder}} type cannot be properly resolved.



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