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https://issues.apache.org/jira/browse/SPARK-17669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15537420#comment-15537420
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Miles Crawford commented on SPARK-17669:
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Was not able to reproduce using a variety of combinations of ml libraries and
rdd-to-dataset-and-back-again transformations. Probably something about our
classpath or configuration that I haven't yet isolated. Hopefully I can get
back to this soon.
> Strange behavior using Datasets
> -------------------------------
>
> Key: SPARK-17669
> URL: https://issues.apache.org/jira/browse/SPARK-17669
> Project: Spark
> Issue Type: Bug
> Components: SQL, Web UI
> Affects Versions: 2.0.0
> Reporter: Miles Crawford
>
> I recently migrated my application to Spark 2.0, and everything worked well,
> except for one function that uses "toDS" and the ML libraries.
> This stage used to complete in 15 minutes or so on 1.6.2, and now takes
> almost two hours.
> The UI shows very strange behavior - completed stages still being worked on,
> concurrent work on tons of stages, including ones from downstream jobs:
> https://dl.dropboxusercontent.com/u/231152/spark.png
> The only source change I made was changing "toDF" to "toDS()" before handing
> my RDDs to the ML libraries.
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