Hi Lixu,

JanusGraph-0.6.0 had various changes to the ConfiguredGraphFactory which might have solved your issue:

https://github.com/JanusGraph/janusgraph/issues/2236
https://github.com/JanusGraph/janusgraph/blob/v0.5.3/janusgraph-core/src/main/java/org/janusgraph/core/ConfiguredGraphFactory.java
https://github.com/JanusGraph/janusgraph/blob/v0.6.1/janusgraph-core/src/main/java/org/janusgraph/core/ConfiguredGraphFactory.java

Can you recheck with version 0.6.1?

BTW, the release notes of v0.6.0 form an impressive list! Merely reading it takes minutes.

Best wishes,

Marc