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https://issues.apache.org/jira/browse/SPARK-12931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin updated SPARK-12931:
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Assignee: Michael Armbrust (was: Reynold Xin)
> Improve bucket read path to only create one single RDD
> ------------------------------------------------------
>
> Key: SPARK-12931
> URL: https://issues.apache.org/jira/browse/SPARK-12931
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Wenchen Fan
> Assignee: Michael Armbrust
>
> Currently we will create one RDD per bucket and coalesce it to one partition,
> and finally union them to a final RDD. We should create a single RDD instead,
> it requires to modify the data source interface a little bit and abstract the
> logic of reader out to decouple it from RDD.
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