Profiler annotations are wrong when there are multiple backend queries

[li-boxuan]

For confirmed bugs, please report:

• Version: 0.5.2, 0.6.0-SNAPSHOT
• Storage Backend: does not matter
• Mixed Index Backend: does not matter
• Steps to reproduce:

graph = JanusGraphFactory.open("inmemory")
mgmt = graph.openManagement()
nameKey = mgmt.makePropertyKey('name').dataType(String.class).make()
ageKey = mgmt.makePropertyKey('age').dataType(Integer.class).make()
mgmt.buildIndex("name", Vertex.class).addKey(nameKey).buildCompositeIndex()
mgmt.buildIndex("age", Vertex.class).addKey(ageKey).buildCompositeIndex()
mgmt.commit()

g = graph.traversal()
g.addV().property("name", "bob").property("age", 60)
graph.tx().commit()

When there is more than one backend query, annotations (condition, orders, isFitted, isOrdered, query, index) of the last one overwrites previous annotations.

1. Multiple conditions under Or

g.V().or(has("name", "bob"), has("age", 60)).profile()

==>Traversal Metrics
Step                                                               Count  Traversers       Time (ms)    % Dur
=============================================================================================================
Or(JanusGraphStep([],[name.eq(bob)]),JanusGraph...                     1           1           5.852   100.00
    \_condition=(age = 60)
    \_orders=[]
    \_isFitted=true
    \_isOrdered=true
    \_query=multiKSQ[1]@2000
    \_index=age
  optimization                                                                                 0.621
  optimization                                                                                 0.175
  optimization                                                                                 0.129
  backend-query                                                        1                       0.730
    \_query=name:multiKSQ[1]@2000
    \_limit=2000
  backend-query                                                        1                       1.396
    \_query=age:multiKSQ[1]@2000
    \_limit=2000
                                            >TOTAL                     -           -           5.852        -

Note the following part

   \_condition=(age = 60)
    \_orders=[]
    \_isFitted=true
    \_isOrdered=true
    \_query=multiKSQ[1]@2000
    \_index=age

only represents the second backend-query.

2. Multiple conditions under And
   Same issue:

g.V().has("name", "bob").has("age", 60).profile()


==>Traversal Metrics
Step                                                               Count  Traversers       Time (ms)    % Dur
=============================================================================================================
JanusGraphStep([],[name.eq(bob), age.eq(60)])                          1           1           1.331   100.00
    \_condition=(name = bob AND age = 60)
    \_orders=[]
    \_isFitted=true
    \_isOrdered=true
    \_query=multiKSQ[1]@2147483647
    \_index=age
  optimization                                                                                 0.013
  optimization                                                                                 0.218
  backend-query                                                        1                       0.119
    \_query=age:multiKSQ[1]@2147483647
  backend-query                                                        1                       0.094
    \_query=name:multiKSQ[1]@2147483647
                                    >TOTAL                     -           -           1.331        -