Remove unused failpoint.

Author: wddevries

pkg/planner/core/exhaust_physical_plans.go

@@ -1107,11 +1107,6 @@ func buildIndexJoinInner2TableScan(
 		lastColMng = indexJoinResult.lastColManager
 	}
 	joins = make([]base.PhysicalPlan, 0, 3)
-	failpoint.Inject("MockOnlyEnableIndexHashJoin", func(val failpoint.Value) {
-		if val.(bool) && !p.SCtx().GetSessionVars().InRestrictedSQL {
-			failpoint.Return(constructIndexHashJoin(p, prop, outerIdx, innerTask, nil, keyOff2IdxOff, path, lastColMng))
-		}
-	})
 	joins = append(joins, constructIndexJoin(p, prop, outerIdx, innerTask, ranges, keyOff2IdxOff, path, lastColMng, true)...)
 	// We can reuse the `innerTask` here since index nested loop hash join
 	// do not need the inner child to promise the order.
@@ -1148,11 +1143,6 @@ func buildIndexJoinInner2IndexScan(
 	joins = make([]base.PhysicalPlan, 0, 3)
 	rangeInfo, maxOneRow := indexJoinPathGetRangeInfoAndMaxOneRow(p.SCtx(), outerJoinKeys, indexJoinResult)
 	innerTask := constructInnerIndexScanTask(p, prop, wrapper, indexJoinResult.chosenPath, indexJoinResult.chosenRanges.Range(), indexJoinResult.chosenRemained, indexJoinResult.idxOff2KeyOff, rangeInfo, false, false, avgInnerRowCnt, maxOneRow)
-	failpoint.Inject("MockOnlyEnableIndexHashJoin", func(val failpoint.Value) {
-		if val.(bool) && !p.SCtx().GetSessionVars().InRestrictedSQL && innerTask != nil {
-			failpoint.Return(constructIndexHashJoin(p, prop, outerIdx, innerTask, indexJoinResult.chosenRanges, keyOff2IdxOff, indexJoinResult.chosenPath, indexJoinResult.lastColManager))
-		}
-	})
 	if innerTask != nil {
 		joins = append(joins, constructIndexJoin(p, prop, outerIdx, innerTask, indexJoinResult.chosenRanges, keyOff2IdxOff, indexJoinResult.chosenPath, indexJoinResult.lastColManager, true)...)
 		// We can reuse the `innerTask` here since index nested loop hash join
@@ -2667,12 +2657,6 @@ func tryToGetMppHashJoin(super base.LogicalPlan, prop *property.PhysicalProperty
 // If the hint is not figured, we will pick all candidates.
 func exhaustPhysicalPlans4LogicalJoin(super base.LogicalPlan, prop *property.PhysicalProperty) ([]base.PhysicalPlan, bool, error) {
 	ge, p := base.GetGEAndLogicalOp[*logicalop.LogicalJoin](super)
-	failpoint.Inject("MockOnlyEnableIndexHashJoin", func(val failpoint.Value) {
-		if val.(bool) && !p.SCtx().GetSessionVars().InRestrictedSQL {
-			indexJoins, _ := tryToGetIndexJoin(p, prop)
-			failpoint.Return(indexJoins, true, nil)
-		}
-	})
 
 	if !isJoinHintSupportedInMPPMode(p.PreferJoinType) {
 		if hasMPPJoinHints(p.PreferJoinType) {