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https://issues.apache.org/jira/browse/TINKERPOP-2353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17072639#comment-17072639
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ASF GitHub Bot commented on TINKERPOP-2353:
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spmallette commented on pull request #1270: TINKERPOP-2353 Added some checks
for null in shutdown of server
URL: https://github.com/apache/tinkerpop/pull/1270
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> Error while Shutting Down Gremlin Server
> ----------------------------------------
>
> Key: TINKERPOP-2353
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2353
> Project: TinkerPop
> Issue Type: Bug
> Components: server
> Affects Versions: 3.4.4
> Reporter: Sarthak Ghosh
> Priority: Minor
>
> I have a kubernetes environment where gremlin server is running as a server.
> While shutting down gremlin-server, I see below mentioned error
> {code}
> 20:23:08.959 [gremlin-server-shutdown] INFO o.a.t.gremlin.server.op.OpLoader
> - Adding the cypher OpProcessor.
> 20:23:08.963 [gremlin-server-shutdown] INFO o.a.t.gremlin.server.op.OpLoader
> - Adding the standard OpProcessor.
> 20:23:08.968 [gremlin-server-shutdown] INFO o.a.t.gremlin.server.op.OpLoader
> - Adding the session OpProcessor.
> 20:23:09.163 [gremlin-server-shutdown] INFO o.a.t.gremlin.server.op.OpLoader
> - Adding the traversal OpProcessor.
> 20:01:51.200 [gremlin-server-shutdown] INFO
> o.a.t.gremlin.server.GremlinServer - Shutting down OpProcessor[]
> 20:01:51.201 [gremlin-server-shutdown] INFO
> o.a.t.gremlin.server.GremlinServer - Shutting down OpProcessor[cypher]
> 20:01:51.201 [gremlin-server-shutdown] INFO
> o.a.t.gremlin.server.GremlinServer - Shutting down OpProcessor[session]
> 20:01:51.202 [gremlin-server-shutdown] INFO
> o.a.t.gremlin.server.GremlinServer - Shutting down OpProcessor[traversal]
> 20:01:51.203 [gremlin-server-shutdown] INFO
> o.a.t.gremlin.server.GremlinServer - Shutting down thread pools.
> 20:01:51.203 [gremlin-server-shutdown] DEBUG
> o.a.t.gremlin.server.GremlinServer - Shutdown Gremlin thread pool.
> Exception in thread "gremlin-server-shutdown" java.lang.NullPointerException
> at
> org.apache.tinkerpop.gremlin.server.GremlinServer.stop(GremlinServer.java:255)
> at
> org.apache.tinkerpop.gremlin.server.GremlinServer.lambda$new$0(GremlinServer.java:103)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> Steps carried out
> 1. server start -> *bin/gremlin-server.sh start*
> 2. Check whether graphs mentioned in gremlin-server.yaml have loaded properly
> or not
> 3. If failure, then stop the server by calling -> *bin/gremlin-server.sh stop*
> 4. Check logs5. Exit environment
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