JanusGraph / JanusGraph/janusgraph
Incorrectly comparing a value with multiple predicates
- Dominant language
- Java
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- Avg merge
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- Merged PRs (30d)
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Description
Please include configurations and logs if available.
For confirmed bugs, please report:
- Version: 0.6.3
- Storage Backend: inmemory
- Mixed Index Backend:
- Link to discussed bug:
- Expected Behavior:
- Current Behavior:
- Steps to Reproduce:
I compare a counted value with `inside(-1,1).and(lt(-1))`, and expect an empty result set. However, it returns two vertices.
```
gremlin> :> g.V().where(__.in('knows').count().is(inside(-1,1).and(lt(-1))))
==>v[8312]
==>v[4312]
```
The graph is as following.
```
Vertex bob = g.addV("person").property("name", "Bob").next();
Vertex alice = g.addV("person").property("name", "Alice").next();
Vertex book = g.addV("book").property("name", "book1").next();
Edge edge1 = g.addE("knows").from(bob).to(alice).next();
Edge edge2 = g.addE("write").from(alice).to(book).next();
g.E(edge2).property("duration", new Float(0.94461)).iterate();
```
Contributor guide
Research direction
Start by reproducing the Gremlin query in the issue against the shown in-memory graph and confirm that the combined predicates return vertices instead of an empty result. Trace the predicate comparison behavior used by count().is(), then verify that the corrected behavior returns no vertices for this example.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- databases
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100