*******************************************************
                Neptune Gremlin Explain
*******************************************************

Query String
============
g.V().project("VertexType1","VertexType2","VertexType3","VertexType4","VertexType5","VertexType6","VertexType7","VertexType8").by(V().hasLabel("VertexType1").limit(1)).by(V().hasLabel("VertexType2").limit(1)).by(V().hasLabel("VertexType3").limit(1)).by(V().hasLabel("VertexType4").limit(1)).by(V().hasLabel("VertexType5").limit(1)).by(V().hasLabel("VertexType6").limit(1)).by(V().hasLabel("VertexType7").limit(1)).by(V().hasLabel("VertexType8").limit(1)).limit(1)


Original Traversal
==================
[GraphStep(vertex,[]), ProjectStep([VertexType1, VertexType2, VertexType3, VertexType4, VertexType5, VertexType6, VertexType7, VertexType8],[[GraphStep(vertex,[]), HasStep([~label.eq(VertexType1)]), RangeGlobalStep(0,1)], [GraphStep(vertex,[]), HasStep([~label.eq(VertexType2)]), RangeGlobalStep(0,1)], [GraphStep(vertex,[]), HasStep([~label.eq(VertexType3)]), RangeGlobalStep(0,1)], [GraphStep(vertex,[]), HasStep([~label.eq(VertexType4)]), RangeGlobalStep(0,1)], [GraphStep(vertex,[]), HasStep([~label.eq(VertexType5)]), RangeGlobalStep(0,1)], [GraphStep(vertex,[]), HasStep([~label.eq(VertexType6)]), RangeGlobalStep(0,1)], [GraphStep(vertex,[]), HasStep([~label.eq(VertexType7)]), RangeGlobalStep(0,1)], [GraphStep(vertex,[]), HasStep([~label.eq(VertexType8)]), RangeGlobalStep(0,1)]]), RangeGlobalStep(0,1)]

Converted Traversal
===================
Neptune steps:
[
    NeptuneGraphQueryStep(Vertex) {
        JoinGroupNode {
            JoinGroupNode {
                PatternNode[VL(?1, <~label>, ?2, <~>) . project distinct ?1 .]
            }, finishers=[limit(1)]
        }, {path=[Vertex(?1):GraphStep], maxVarId=19}
    },
    NeptuneProjectStep {
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?3, <~label>, ?4=<VertexType1>, <~>) . project ?3 .], {estimatedCardinality=259941824, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?3):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?5, <~label>, ?6=<VertexType2>, <~>) . project ?5 .], {estimatedCardinality=94304986, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?5):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?7, <~label>, ?8=<VertexType3>, <~>) . project ?7 .], {estimatedCardinality=199481486, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?7):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?9, <~label>, ?10=<VertexType4>, <~>) . project ?9 .], {estimatedCardinality=72190876, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?9):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?11, <~label>, ?12=<VertexType5>, <~>) . project ?11 .], {estimatedCardinality=39101280, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?11):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?13, <~label>, ?14=<VertexType6>, <~>) . project ?13 .], {estimatedCardinality=205772256, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?13):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?15, <~label>, ?16=<VertexType7>, <~>) . project ?15 .], {estimatedCardinality=94554496, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?15):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?17, <~label>, ?18=<VertexType8>, <~>) . project ?17 .], {estimatedCardinality=99018742, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?17):GraphStep], maxVarId=19}
        }
    },
    NeptuneTraverserConverterStep
]


Optimized Traversal
===================
Neptune steps:
[
    NeptuneGraphQueryStep(Vertex) {
        JoinGroupNode {
            PatternNode[VL(?1, <~label>, ?2, <~>) . project distinct ?1 .], {estimatedCardinality=INFINITY}
        }, finishers=[limit(1)], {path=[Vertex(?1):GraphStep], maxVarId=19, estimatedCardinality=1}
    },
    NeptuneProjectStep {
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?3, <~label>, ?4=<VertexType1>, <~>) . project ?3 .], {estimatedCardinality=259941824, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?3):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?5, <~label>, ?6=<VertexType2>, <~>) . project ?5 .], {estimatedCardinality=94304986, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?5):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?7, <~label>, ?8=<VertexType3>, <~>) . project ?7 .], {estimatedCardinality=199481486, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?7):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?9, <~label>, ?10=<VertexType4>, <~>) . project ?9 .], {estimatedCardinality=72190876, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?9):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?11, <~label>, ?12=<VertexType5>, <~>) . project ?11 .], {estimatedCardinality=39101280, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?11):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?13, <~label>, ?14=<VertexType6>, <~>) . project ?13 .], {estimatedCardinality=205772256, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?13):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?15, <~label>, ?16=<VertexType7>, <~>) . project ?15 .], {estimatedCardinality=94554496, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?15):GraphStep], maxVarId=19}
        },
        NeptuneGraphQueryStep(Vertex) {
            JoinGroupNode {
                PatternNode[VL(?17, <~label>, ?18=<VertexType8>, <~>) . project ?17 .], {estimatedCardinality=99018742, oneResult=true}
            }, {initialValues={?1=null}, path=[Vertex(?1):GraphStep, Vertex(?17):GraphStep], maxVarId=19}
        }
    },
    NeptuneTraverserConverterStep
]


Predicates
==========
# of predicates: 31