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Posted to issues@spark.apache.org by "Dongjoon Hyun (JIRA)" <ji...@apache.org> on 2016/08/10 16:53:20 UTC
[jira] [Commented] (SPARK-16994) Filter and limit are illegally
permuted.
[ https://issues.apache.org/jira/browse/SPARK-16994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15415569#comment-15415569 ]
Dongjoon Hyun commented on SPARK-16994:
---------------------------------------
Hi, [~TPolzer].
Indeed, it is. `PushDownPredicate` seems to ignore `Limit`. I'll make a PR for this issue soon.
> Filter and limit are illegally permuted.
> ----------------------------------------
>
> Key: SPARK-16994
> URL: https://issues.apache.org/jira/browse/SPARK-16994
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: TobiasP
>
> {noformat}
> scala> spark.createDataset(1 to 100).limit(10).filter($"value" % 10 === 0).explain
> == Physical Plan ==
> CollectLimit 10
> +- *Filter ((value#875 % 10) = 0)
> +- LocalTableScan [value#875]
> scala> spark.createDataset(1 to 100).limit(10).filter($"value" % 10 === 0).collect
> res23: Array[Int] = Array(10, 20, 30, 40, 50, 60, 70, 80, 90, 100)
> {noformat}
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