Zeyang Zhuang created TINKERPOP-2895:
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Summary: Merged query using logical operator AND returns false
results
Key: TINKERPOP-2895
URL: https://issues.apache.org/jira/browse/TINKERPOP-2895
Project: TinkerPop
Issue Type: Bug
Affects Versions: 3.6.2
Reporter: Zeyang Zhuang
We discovered a bug that Merged query using logical operator AND returns false
results.
- TinkerGraph Version: 3.6.2
- Operating system: macOS 13.2.1
- API/Driver: Java
### Expected behavior:
We construct the following scenario: we randomly generate two queries Q1, Q2,
and merge these two queries using AND logical operator into a new query Q3.
Based on the AND calculation. The Q3 query result set should be the
intersection of result sets from Q1 and Q2.
We generate graph schema and data based on random strings and values. Here is
one of our examples that triggered the bug.
1) `g.V().outE('el0','el2').bothV()` returns `[0, 0, 11, 11, 13, 13, 13, 13,
18, 18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 6, 6, 6, 6, 6, 8, 8, 8]`
2) `g.V().hasLabel('vl1','vl0')` returns `[16, 18, 2, 21, 4, 6, 8]`
3) `g.V().and(outE('el0','el2').bothV(),hasLabel('vl1','vl0'))` returns `[18,
2, 6]`.
We calculate the intersection result set of Q1 and Q2, which is `[18, 2, 6, 8]`.
The intersection result set doesn't equal to Q3 result set.
### Actual behavior:
The intersection result set should equal to Q3 result set. We did trigger some
cases conform to this requirement, but still there're some cases that violate
this constraint.
### Steps to reproduce:
We create a graph with 10 nodes and 20 edges. We try to make it clear to
reproduce the bugs, **hope** to not cause much inconvenience to your reviewing,
but we believe the problem does exist.
Following the following graph data generation query, we can reproduce the bugs:
- Create data
```
Vertex:
g.addV('vl2').property('vp2','0.11229777').property(T.id,0)
g.addV('vl1').property('vp1','0.7532909965461835').property(T.id,2)
g.addV('vl0').property('vp6','-882633195435277600').property(T.id,4)
g.addV('vl1').property('vp4','7665355125606600882').property(T.id,6)
g.addV('vl1').property('vp1','0.7532909965461835').property('vp4','3838824259062394782').property(T.id,8)
g.addV('vl2').property('vp4','6730135576265295973').property(T.id,11)
g.addV('vl2').property('vp3','-6896539503167143038').property('vp4','-2940639995931981142').property(T.id,13)
g.addV('vl0').property('vp6','-2552831883676257311').property(T.id,16)
g.addV('vl1').property('vp1','0.4100010612879974').property('vp4','-2768293334048120500').property(T.id,18)
g.addV('vl0').property('vp6','8251747935808021903').property(T.id,21)
Edge:
g.V(0).as('0').V(2).as('2').addE('el1').from('0').to('2')
g.V(8).as('8').V(6).as('6').addE('el0').from('8').to('6')
g.V(0).as('0').V(18).as('18').addE('el1').from('0').to('18')
g.V(6).as('6').V(13).as('13').addE('el2').from('6').to('13')
g.V(18).as('18').V(2).as('2').addE('el0').from('18').to('2')
g.V(18).as('18').V(0).as('0').addE('el2').from('18').to('0')
g.V(6).as('6').V(18).as('18').addE('el0').from('6').to('18')
g.V(2).as('2').V(11).as('11').addE('el2').from('2').to('11')
g.V(8).as('8').V(13).as('13').addE('el2').from('8').to('13')
g.V(11).as('11').V(8).as('8').addE('el1').from('11').to('8')
g.V(18).as('18').V(13).as('13').addE('el2').from('18').to('13')
g.V(8).as('8').V(0).as('0').addE('el2').from('8').to('0')
g.V(6).as('6').V(11).as('11').addE('el2').from('6').to('11')
g.V(11).as('11').V(18).as('18').addE('el1').from('11').to('18')
g.V(2).as('2').V(6).as('6').addE('el0').from('2').to('6')
g.V(13).as('13').V(6).as('6').addE('el1').from('13').to('6')
g.V(0).as('0').V(6).as('6').addE('el1').from('0').to('6')
g.V(2).as('2').V(13).as('13').addE('el2').from('2').to('13')
g.V(2).as('2').V(18).as('18').addE('el0').from('2').to('18')
g.V(2).as('2').V(2).as('2').addE('el0').from('2').to('2')
```
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