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Posted to issues@spark.apache.org by "Lianhui Wang (JIRA)" <ji...@apache.org> on 2016/06/29 18:50:05 UTC
[jira] [Created] (SPARK-16302) LocalTableScanExec always use
defaultParallelism tasks even though it is very small seq.
Lianhui Wang created SPARK-16302:
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Summary: LocalTableScanExec always use defaultParallelism tasks even though it is very small seq.
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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