case class HintInfo(strategy: Option[JoinStrategyHint] = None) extends Product with Serializable
The hint attributes to be applied on a specific node.
- strategy
The preferred join strategy.
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new
HintInfo(strategy: Option[JoinStrategyHint] = None)
- strategy
The preferred join strategy.
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def
merge(other: HintInfo, hintErrorHandler: HintErrorHandler): HintInfo
Combine this HintInfo with another HintInfo and return the new HintInfo.
- other
the other HintInfo
- hintErrorHandler
the error handler to notify if any HintInfo has been overridden in this merge. Currently, for join strategy hints, the new HintInfo will contain the strategy in this HintInfo if defined, otherwise the strategy in the other HintInfo. The
hintOverriddenCallbackwill be called if this HintInfo and the other HintInfo both have a strategy defined but the join strategies are different.
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- val strategy: Option[JoinStrategyHint]
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