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https://issues.apache.org/jira/browse/FLINK-29498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17614637#comment-17614637
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lincoln lee commented on FLINK-29498:
-------------------------------------
[~eric.xiao] the retry feature is implemented under the interface-level
equivalence between the java and scala api but not included utilities.
Recently a discussion "Deprecate and remove Scala API
support"(https://lists.apache.org/thread/d3borhdzj496nnggohq42fyb6zkwob3h) was
raised on the ML,
before a conclusion is reached on it, I think we can move forward with
improvements that are valuable to users, [~gaoyunhaii] WDYT?
> Flink Async I/O Retry Strategies Do Not Work for Scala AsyncDataStream API
> --------------------------------------------------------------------------
>
> Key: FLINK-29498
> URL: https://issues.apache.org/jira/browse/FLINK-29498
> Project: Flink
> Issue Type: Bug
> Components: API / Scala
> Affects Versions: 1.15.2
> Reporter: Eric Xiao
> Priority: Minor
>
> We are using the async I/O to make HTTP calls and one of the features we
> wanted to leverage was the retries, so we pulled the newest commit:
> [http://github.com/apache/flink/pull/19983] into our internal Flink fork.
> When I try calling the function {{AsyncDataStream.unorderedWaitWithRetry}}
> from the scala API I with a retry strategy from the java API I get an error
> as {{unorderedWaitWithRetry}} expects a scala retry strategy. The problem is
> that retry strategies were only implemented in java and not Scala in this PR:
> [http://github.com/apache/flink/pull/19983].
>
> Here is some of the code to reproduce the error:
> {code:java}
> import org.apache.flink.streaming.api.scala.AsyncDataStream
> import org.apache.flink.streaming.util.retryable.{AsyncRetryStrategies =>
> JAsyncRetryStrategies}
> val javaAsyncRetryStrategy = new
> JAsyncRetryStrategies.FixedDelayRetryStrategyBuilder[Int](3, 100L)
> .build()
> val data = AsyncDataStream.unorderedWaitWithRetry(
> source,
> asyncOperator,
> pipelineTimeoutInMs,
> TimeUnit.MILLISECONDS,
> javaAsyncRetryStrategy
> ){code}
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