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https://issues.apache.org/jira/browse/SPARK-16302?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lianhui Wang updated SPARK-16302:
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Summary: Set the default number of partitions for reading data from a local
collection. (was: LocalTableScanExec always use defaultParallelism tasks even
though it is very small seq.)
> Set the default number of partitions for reading data from a local collection.
> ------------------------------------------------------------------------------
>
> Key: SPARK-16302
> URL: https://issues.apache.org/jira/browse/SPARK-16302
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Lianhui Wang
>
> query: val df = Seq[(Int, Int)]().toDF("key", "value").count it always use
> defaultParallelism tasks. So i cause run empty or small tasks.
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