rui-mo commented on code in PR #5750:
URL: https://github.com/apache/incubator-gluten/pull/5750#discussion_r1618304380
##########
backends-velox/src/main/scala/org/apache/gluten/backendsapi/velox/VeloxBackend.scala:
##########
@@ -376,13 +376,8 @@ object VeloxBackendSettings extends BackendSettingsApi {
} else {
t match {
// OPPRO-266: For Velox backend, build right and left are both
supported for
- // LeftOuter and LeftSemi.
- // FIXME Hongze 22/12/06
- // HashJoin.scala in shim was not always loaded by class loader.
- // The file should be removed and we temporarily disable the
improvement
- // introduced by OPPRO-266 by commenting out the following
prerequisite
- // condition.
-// case LeftOuter | LeftSemi => true
+ // LeftOuter.
+ case LeftOuter => true
Review Comment:
Not exactly. The two sides of the time-consuming join have a large
difference on data size, so we need to make sure the smaller table is used as
build side. I'm still confirming that.
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