[
https://issues.apache.org/jira/browse/SPARK-32710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17797261#comment-17797261
]
Eric Xiao commented on SPARK-32710:
-----------------------------------
Hi [~chengsu], I am interested in working on enabling hive bucketing in spark
and I noticed there are a couple of tickets still open. May I take a stab at
this ticket?
This ticket does not seem too complicated as well? A couple of questions:
* Where in Spark would one start to implement the `murmur3hash` algorithm?
* Is the scope of this ticket just to implement the exact hashing logic found
in the linked hive code snippet?
> Add Hive Murmur3Hash expression
> -------------------------------
>
> Key: SPARK-32710
> URL: https://issues.apache.org/jira/browse/SPARK-32710
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Cheng Su
> Priority: Minor
>
> To allow Spark to write Hive 3 compatible bucketed table, we need to follow
> the same hash function with Hive/Presto. Hive murmur3hash is quite some
> different with Spark murmur3hash (with different default seed, different
> logic for NULL, array, map, struct, detail in
> [https://github.com/apache/hive/blob/ece58fff1b53ea451bfc524c4c15f63ee12eca00/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/ObjectInspectorUtils.java#L813]).
> So here introduce a Hive murmur3hash expression.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
