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https://issues.apache.org/jira/browse/SPARK-26249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17010223#comment-17010223
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Takeshi Yamamuro commented on SPARK-26249:
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I'll close this because the corresponding pr is inactive (automatically
closed). If necessary, please reopen this. Thanks.
> Extension Points Enhancements to inject a rule in order and to add a batch
> --------------------------------------------------------------------------
>
> Key: SPARK-26249
> URL: https://issues.apache.org/jira/browse/SPARK-26249
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Sunitha Kambhampati
> Priority: Major
>
> +Motivation:+
> Spark has extension points API to allow third parties to extend Spark with
> custom optimization rules. The current API does not allow fine grain control
> on when the optimization rule will be exercised. In the current API, there
> is no way to add a batch to the optimization using the SparkSessionExtensions
> API, similar to the postHocOptimizationBatches in SparkOptimizer.
> In our use cases, we have optimization rules that we want to add as
> extensions to a batch in a specific order.
> +Proposal:+
> Add 2 new API's to the existing Extension Points to allow for more
> flexibility for third party users of Spark.
> # Inject a optimizer rule to a batch in order
> # Inject a optimizer batch in order
> The design spec is here:
> [https://drive.google.com/file/d/1m7rQZ9OZFl0MH5KS12CiIg3upLJSYfsA/view?usp=sharing]
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