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https://issues.apache.org/jira/browse/SPARK-28237?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-28237:
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Assignee: Apache Spark
> Add a new batch strategy called Idempotent to catch potential bugs in
> corresponding rules
> -----------------------------------------------------------------------------------------
>
> Key: SPARK-28237
> URL: https://issues.apache.org/jira/browse/SPARK-28237
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Yesheng Ma
> Assignee: Apache Spark
> Priority: Major
>
> The current {{RuleExecutor}} system contains two kinds of strategies:
> {{Once}} and {{FixedPoint}}. The {{Once}} strategy is supposed to run once.
> However, for particular rules (e.g. PullOutNondeterministic), they are
> designed to be idempotent, but Spark currently lacks corresponding mechanism
> to prevent such kind of non-idempotent behavior from happening.
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