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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2016/11/14 11:18:58 UTC
[jira] [Commented] (SPARK-17786) [SPARK 2.0] Sorting algorithm
gives higher skewness of output
[ https://issues.apache.org/jira/browse/SPARK-17786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15663512#comment-15663512 ]
Wenchen Fan commented on SPARK-17786:
-------------------------------------
Hi can you share your dataset to reproduce this problem?
> [SPARK 2.0] Sorting algorithm gives higher skewness of output
> -------------------------------------------------------------
>
> Key: SPARK-17786
> URL: https://issues.apache.org/jira/browse/SPARK-17786
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.1
> Reporter: Maciej Bryński
>
> Hi,
> I'm using df.sort("column") to sort my data before saving it to parquet.
> When using Spark 1.6.2 all partitions were similar in size.
> On Spark 2.0.0 three of the partitions are much bigger than rest.
> Can I go back to previous behaviour of sorting ?
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