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ResolveCoalesceHints

ResolveCoalesceHints Logical Resolution Rule — Resolving UnresolvedHint Operators with COALESCE and REPARTITION Hints

ResolveCoalesceHints is a logical resolution rule that the Spark Analyzer uses to resolve UnresolvedHint logical operators with COALESCE or REPARTITION hints (case-insensitive) to ResolvedHint operators.

COALESCE or REPARTITION hints expect a partition number as the only parameter.

Technically, ResolveCoalesceHints is a Catalyst rule for transforming logical plans, i.e. Rule[LogicalPlan].

ResolveCoalesceHints is part of Hints fixed-point batch of rules (that is executed before any other rule).

ResolveCoalesceHints takes no input parameters when created.

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