spark技术分享PreprocessTableCreation PostHoc Logical Resolution Rule
PreprocessTableCreation is a posthoc logical resolution rule that resolves a logical query plan with CreateTable logical operators.
PreprocessTableCreation is part of the Post-Hoc Resolution once-executed batch of the Hive-specific and the default logical analyzers.
PreprocessTableCreation is simply a Catalyst rule for transforming logical plans, i.e. Rule[LogicalPlan].
PreprocessTableCreation takes a SparkSession when created.
Executing Rule — apply Method
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apply(plan: LogicalPlan): LogicalPlan |
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Note
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apply is part of the Rule Contract to execute (apply) a rule on a TreeNode (e.g. LogicalPlan).
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apply…FIXME
