HashedRelationBroadcastMode

HashedRelationBroadcastMode is a BroadcastMode that BroadcastHashJoinExec uses for the required output distribution of child operators.

HashedRelationBroadcastMode takes build-side join keys (as Catalyst expressions) when created.

HashedRelationBroadcastMode gives a copy of itself with keys canonicalized when requested for a canonicalized version.

transform Method

transform(rows: Array[InternalRow]): HashedRelation (1)
transform(
  rows: Iterator[InternalRow],
  sizeHint: Option[Long]): HashedRelation

  1. Uses the other transform with the size of rows as sizeHint

Note
 transform is part of BroadcastMode Contract to…​FIXME.

transform…​FIXME

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