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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2019/02/21 14:28:00 UTC
[jira] [Assigned] (SPARK-26955) Align Spark's TimSort to JDK 11
TimSort
[ https://issues.apache.org/jira/browse/SPARK-26955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-26955:
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Assignee: Apache Spark
> Align Spark's TimSort to JDK 11 TimSort
> ---------------------------------------
>
> Key: SPARK-26955
> URL: https://issues.apache.org/jira/browse/SPARK-26955
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 2.4.0
> Reporter: Maxim Gekk
> Assignee: Apache Spark
> Priority: Minor
>
> There are a couple differences in Spark's TimSort and JDK 11 TimSort:
> - Additional check in mergeCollapse introduced by http://hg.openjdk.java.net/jdk/jdk/rev/3a6d47df8239#l1.34
> - And increased constants for stackLen (http://hg.openjdk.java.net/jdk/jdk11/file/1ddf9a99e4ad/src/java.base/share/classes/java/util/TimSort.java#l184):
> The ticket aims to address the differences.
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