[
https://issues.apache.org/jira/browse/SPARK-34255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17272633#comment-17272633
]
Apache Spark commented on SPARK-34255:
--------------------------------------
User 'HeartSaVioR' has created a pull request for this issue:
https://github.com/apache/spark/pull/31355
> DataSource V2: support static partitioning on required distribution and
> ordering
> --------------------------------------------------------------------------------
>
> Key: SPARK-34255
> URL: https://issues.apache.org/jira/browse/SPARK-34255
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Jungtaek Lim
> Priority: Major
>
> SPARK-34026 addressed the functionality of requiring repartition and sort
> order from data source, but left the number of partitions during repartition
> as depending on the config (default number of shuffle partitions).
> Some special data sources may require the "static number of partitions"
> during repartition - for example, state data source. Spark stores the state
> via partitioned by "hash(group key) % default number of shuffle partitions",
> which means state data source should do the same to rewrite the state data.
> And the data source is required to "change" the default number of shuffle
> partitions, as the value is not guaranteed to be same, and also there's a
> chance we change the number of partitions to non-static one (like letting AQE
> decides it, SPARK-34230).
> This issue tracks the effort to support static number of partitions during
> repartition.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
