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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2020/09/15 13:59:00 UTC
[jira] [Assigned] (SPARK-32892) Murmur3 and xxHash64
implementations do not produce the correct results on big-endian platforms
[ https://issues.apache.org/jira/browse/SPARK-32892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-32892:
------------------------------------
Assignee: Apache Spark
> Murmur3 and xxHash64 implementations do not produce the correct results on big-endian platforms
> -----------------------------------------------------------------------------------------------
>
> Key: SPARK-32892
> URL: https://issues.apache.org/jira/browse/SPARK-32892
> Project: Spark
> Issue Type: Bug
> Components: Spark Core, SQL
> Affects Versions: 3.0.1
> Reporter: Michael Munday
> Assignee: Apache Spark
> Priority: Minor
> Labels: big-endian
>
> The Murmur3 and xxHash64 implementations in Spark do not produce the correct results on big-endian systems. This causes test failures on my target platform (s390x).
> These hash functions require that multi-byte chunks be interpreted as integers encoded in *little-endian* byte order. This requires byte reversal when using multi-byte unsafe operations on big-endian platforms.
> I have a PR ready for discussion and review.
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