Incorrect query results for the Gremlin API outE().hasLabel() with multiple edge labels

[zhengyingying]

Bug Type (问题类型)

No response

Before submit

• 我已经确认现有的 Issues 与 FAQ 中没有相同 / 重复问题

Environment (环境信息)

• Server Version: v0.12.0
• Backend: inmemory
• OS: xx CPUs, xx G RAM, Centos 7.x
• Data Size: xx vertices, xx edges

Expected & Actual behavior (期望与实际表现)

The reproduce code as follows.

/** create schema */
// property
schema.propertyKey("ep0").asBoolean().ifNotExist().create();
schema.propertyKey("ep1").asBoolean().ifNotExist().create();
schema.propertyKey("vp0").asBoolean().ifNotExist().create();

// vertex
schema.vertexLabel("vl0").properties("vp0").nullableKeys("vp0").create();
schema.indexLabel("vl0Byvp0").onV("vl0").by("vp0").shard().ifNotExist().create();

// edges
schema.edgeLabel("el0").sourceLabel("vl0").targetLabel("vl0").properties("ep0").ifNotExist().create();
schema.edgeLabel("el1").sourceLabel("vl0").targetLabel("vl0").properties("ep1").ifNotExist().create();
schema.indexLabel("el0Byep0").onE("el0").by("ep0").shard().ifNotExist().create();
schema.indexLabel("el1Byep0").onE("el1").by("ep1").shard().ifNotExist().create();

/** create graph data */
Vertex vertex1 = new Vertex("vl0").property("vp0", true);
Vertex vertex2 = new Vertex("vl0").property("vp0", false);
Vertex vertex3 = new Vertex("vl0").property("vp0", true);
graph.addVertices(Arrays.asList(vertex1, vertex2, vertex3));

Edge edge1 = new Edge("el0").source(vertex1).target(vertex2).property("ep0", true);
Edge edge2 = new Edge("el1").source(vertex1).target(vertex3).property("ep1", false);
graph.addEdges(Arrays.asList(edge1, edge2));

We create three vertices and two edges.

When we execute the query g.V().outE('el0','el1').hasLabel('el0'), we expect the edge edge1 can be obtained. However, an exception Illegal key 'LABEL' with more than one value was thrown.

We find that a closed issue (#1735) reported the same bug, and it seems to be fixed. Unfortunately, we still find the same bug. Maybe it deserves further investigation?

Vertex/Edge example (问题点 / 边数据举例)

No response

Schema [VertexLabel, EdgeLabel, IndexLabel] (元数据结构)

No response