Hi,
I've been reviewing the code of JoinSelection for ShuffledHashJoin and
can't understand how !RowOrdering.isOrderable(leftKeys) can be ever met for
the second case (copying the entire code for a quick look):
if !conf.preferSortMergeJoin && canBuildRight(joinType) &&
canBuildLocalHashMap(right)
&& muchSmaller(right, left) ||
!RowOrdering.isOrderable(leftKeys) =>
if !conf.preferSortMergeJoin && canBuildLeft(joinType) &&
canBuildLocalHashMap(left)
&& muchSmaller(left, right) ||
!RowOrdering.isOrderable(leftKeys) =>
How is !RowOrdering.isOrderable(leftKeys) possible in the second case? I
must be missing something...again :( Please help.
Pozdrawiam,
Jacek Laskowski
----
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