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https://issues.apache.org/jira/browse/SPARK-3783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14158176#comment-14158176
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Nathan Kronenfeld commented on SPARK-3783:
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https://github.com/apache/spark/pull/2637
> The type parameters for SparkContext.accumulable are inconsistent Accumulable
> itself
> ------------------------------------------------------------------------------------
>
> Key: SPARK-3783
> URL: https://issues.apache.org/jira/browse/SPARK-3783
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: Nathan Kronenfeld
> Priority: Minor
> Original Estimate: 10m
> Remaining Estimate: 10m
>
> SparkContext.accumulable takes type parameters [T, R] - and passes them to
> accumulable, in that order.
> Accumulable takes type parameters [R, T].
> So T for SparkContext.accumulable corresponds with R for Accumulable and vice
> versa.
> Minor, but very confusing.
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