spmallette
spmallette
ATApache TinkerPop
Created by spmallette on 7/12/2024 in #questions
neo4j-gremlin not working with JDK17
Neo4jGraph fails to start with top-level error like:
Error starting org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory
with causes like:
Suppressed: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.scheduler.CentralJobScheduler@5906ebfb' failed to transition from stopped to shutting_down. Please see the attached cause exception "Exception java.lang.LinkageError: Could not get Throwable message field [in thread "main"]"
and:
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.NeoStoreDataSource@4bfe83d' was successfully initialized, but failed to start. Please see the attached cause exception "Exception java.lang.IllegalAccessError: class org.neo4j.io.pagecache.impl.SingleFilePageSwapper (in unnamed module @0x75eeccf5) cannot access class sun.nio.ch.FileChannelImpl (in module java.base) because module java.base does not export sun.nio.ch to unnamed module @0x75eeccf5 [in thread "main"]".
5 replies
ATApache TinkerPop
Created by spmallette on 5/15/2023 in #questions
Technical differences between Titan/JanusGraph and HugeGraph
What are the main technical differences between Titan/JanusGraph and HugeGraph?
6 replies
ATApache TinkerPop
Created by spmallette on 4/2/2023 in #questions
Does Gremlin do DFS or BFS?
Does Gremlin perform a Depth First Search (DFS) or Breadth First Search (BFS) when traversing?
7 replies
ATApache TinkerPop
Created by spmallette on 1/17/2023 in #questions
get() on a List
In Gremlin how does one do a get() on a List in order to access an item by index?
4 replies