[jira] [Updated] (TINKERPOP-1249) Gremlin driver to periodically issue ping / heartbeat to gremlin server

["stephen mallette (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TINKERPOP-1249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stephen mallette updated TINKERPOP-1249:
----------------------------------------
    Priority: Major  (was: Critical)

> Gremlin driver to periodically issue ping / heartbeat to gremlin server
> -----------------------------------------------------------------------
>
>                 Key: TINKERPOP-1249
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1249
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: driver
>    Affects Versions: 3.1.1-incubating
>         Environment: gremlin driver accessing gremlin server behind a load balancer / proxy (tested on nginx proxing the gremlin server)
>            Reporter: Venkata Phani Kumar Mangipudi
>
> Gremlin driver currently not sending any ping request to the gremlin server. As a result, the websocket channel gets closed by the nginx / load balancer/ proxy after a period of inactivity. 
> This forces the sockets to be left open indefinitely on the proxy/ load balancer. Which is not a good practice, because this would lead to socket leaks (not sure if that is the right word). What I mean by saying socket leak, is: if there are multiple clients (micro services) connecting to the same gremlin-server using gremlin driver. They all end up having open channels to the server. And the server would never be able to release the channels. 
> Meaning if the micro services using gremlin driver and having a pool size of 10 are restarted say 100 times, there will be 1000 channels open indefinitely and there is no way to revoke the killed instances' open channels. 
> This has been discussed in gremlin-users group: https://groups.google.com/forum/#!topic/gremlin-users/UjaV6sRuKMc



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)