Issue with Orient DB Clustering

[Krishna Kant]

Hi All,

I am setting up Orient DB master-master cluster environment and facing below two issues:

1)Maximum connection reached

2)Concurrent modification exception while writing record.

I am using Orient Graph factory with max 20 connection for my 4 client apps. Also all the graph related call is surrounded by try and finally having graph.shutdown(), so where connection is getting leaked?

Another issue which I am observing is writing a vertex to class in clustered environment. It hits OConcurrentModificationException and once I try to print the IDs I saw the record got started with #60:0 and while commit during graph.shutdown() it has id as #60:1. I do not have any concurrent thread running. So is DB sync up can modify the record id.

Same write record once i tried using single node it worked fine.

[Oleksandr Gubchenko]

Which version are you using?

[Krishna Kant]

I am using 2.2.4 DB version and for orient Graph orientGraphVersion=2.2.8 is my JAR dependency in code.

[Oleksandr Gubchenko]

If you run out of available connections, this means the client never closes them.

Can you post your full code?