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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2016/06/11 22:48:20 UTC
[jira] [Resolved] (SPARK-15807) Support varargs for dropDuplicates
in Dataset/DataFrame
[ https://issues.apache.org/jira/browse/SPARK-15807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Reynold Xin resolved SPARK-15807.
---------------------------------
Resolution: Fixed
Assignee: Dongjoon Hyun
Fix Version/s: 2.0.0
> Support varargs for dropDuplicates in Dataset/DataFrame
> -------------------------------------------------------
>
> Key: SPARK-15807
> URL: https://issues.apache.org/jira/browse/SPARK-15807
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Dongjoon Hyun
> Assignee: Dongjoon Hyun
> Fix For: 2.0.0
>
>
> This issue adds `varargs`-types `dropDuplicates` functions in `Dataset/DataFrame`. Currently, `dropDuplicates` supports only `Seq` or `Array`.
> {code}
> scala> val ds = spark.createDataFrame(Seq(("a", 1), ("b", 2), ("a", 2)))
> ds: org.apache.spark.sql.DataFrame = [_1: string, _2: int]
> scala> ds.dropDuplicates(Seq("_1", "_2"))
> res0: org.apache.spark.sql.Dataset[org.apache.spark.sql.Row] = [_1: string, _2: int]
> scala> ds.dropDuplicates("_1", "_2")
> <console>:26: error: overloaded method value dropDuplicates with alternatives:
> (colNames: Array[String])org.apache.spark.sql.Dataset[org.apache.spark.sql.Row] <and>
> (colNames: Seq[String])org.apache.spark.sql.Dataset[org.apache.spark.sql.Row] <and>
> ()org.apache.spark.sql.Dataset[org.apache.spark.sql.Row]
> cannot be applied to (String, String)
> ds.dropDuplicates("_1", "_2")
> ^
> {code}
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