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https://issues.apache.org/jira/browse/SPARK-2321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14212887#comment-14212887
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Josh Rosen commented on SPARK-2321:
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HI [~lirui],
Yes, this API was designed to be extensible without breaking binary
compatibility. If you have specific functionality that you want in this API,
can you open new JIRAs for them (or submit pull requests)?
(By the way, I'm working on some refactoring of this API at
https://github.com/apache/spark/pull/3197, to be done before 1.2.0 is released).
> Design a proper progress reporting & event listener API
> -------------------------------------------------------
>
> Key: SPARK-2321
> URL: https://issues.apache.org/jira/browse/SPARK-2321
> Project: Spark
> Issue Type: Improvement
> Components: Java API, Spark Core
> Affects Versions: 1.0.0
> Reporter: Reynold Xin
> Assignee: Josh Rosen
> Priority: Critical
> Fix For: 1.2.0
>
>
> This is a ticket to track progress on redesigning the SparkListener and
> JobProgressListener API.
> There are multiple problems with the current design, including:
> 0. I'm not sure if the API is usable in Java (there are at least some enums
> we used in Scala and a bunch of case classes that might complicate things).
> 1. The whole API is marked as DeveloperApi, because we haven't paid a lot of
> attention to it yet. Something as important as progress reporting deserves a
> more stable API.
> 2. There is no easy way to connect jobs with stages. Similarly, there is no
> easy way to connect job groups with jobs / stages.
> 3. JobProgressListener itself has no encapsulation at all. States can be
> arbitrarily mutated by external programs. Variable names are sort of randomly
> decided and inconsistent.
> We should just revisit these and propose a new, concrete design.
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