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https://issues.apache.org/jira/browse/FLINK-3665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15245790#comment-15245790
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ASF GitHub Bot commented on FLINK-3665:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1848#discussion_r60071774
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/operators/Keys.java ---
@@ -183,9 +193,13 @@ public String toString() {
public static final String SELECT_ALL_CHAR = "*";
public static final String SELECT_ALL_CHAR_SCALA = "_";
+ private static final Pattern WILD_CARD_REGEX =
Pattern.compile("[\\.]?("
+ + "\\" + SELECT_ALL_CHAR + "\\B|"
--- End diff --
Can we terminate the patterns with `$` instead of `\b` and `\B`?
> Range partitioning lacks support to define sort orders
> ------------------------------------------------------
>
> Key: FLINK-3665
> URL: https://issues.apache.org/jira/browse/FLINK-3665
> Project: Flink
> Issue Type: Improvement
> Components: DataSet API
> Affects Versions: 1.0.0
> Reporter: Fabian Hueske
> Fix For: 1.1.0
>
>
> {{DataSet.partitionByRange()}} does not allow to specify the sort order of
> fields. This is fine if range partitioning is used to reduce skewed
> partitioning.
> However, it is not sufficient if range partitioning is used to sort a data
> set in parallel.
> Since {{DataSet.partitionByRange()}} is {{@Public}} API and cannot be easily
> changed, I propose to add a method {{withOrders(Order... orders)}} to
> {{PartitionOperator}}. The method should throw an exception if the
> partitioning method of {{PartitionOperator}} is not range partitioning.
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