billmanh
billmanh
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ATApache TinkerPop
Created by billmanh on 8/31/2023 in #questions
Question on running queries in windows env.
I get an error RuntimeError: Event loop is closed, but after troubleshooting I notice that my script ran just fine. It crashed after the script eded. I suppose I was just ignoring it at first, but should I? I'm using asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy()) . Should I just ignore the error or should I deal with it? if the latter, how?
3 replies
ATApache TinkerPop
Created by billmanh on 8/26/2023 in #questions
Trying to run a local version for a test, what is the correct serializer?
Windows machine, local host. I can't find the Running this, https://github.com/bricaud/gremlin-server but updated the version to apache-tinkerpop-gremlin-server-3.7.0 I had issue with the serializers: section of the gremlin-conf.yaml so I commented out to see if the defaults would work. The docker image loads fine, but then I can't seem to connect to it. My simple test: 
print('Number of nodes {}, number of edges {}.'.format(g.V().count().next(),g.E().count().next()))
print('Number of nodes {}, number of edges {}.'.format(g.V().count().next(),g.E().count().next()))
My error: 
aiohttp.client_exceptions.ServerDisconnectedError: Server disconnected
aiohttp.client_exceptions.ServerDisconnectedError: Server disconnected
So I'm trying to find out what serializer goes there, but all of my variants are failing. Anyone know what the correct serializer is? 
- { className: org.apache.tinkerpop.gremlin.driver.ser.GraphBinaryMessageSerializerV1 , config: { serializeResultToString: true }}                                                                     # application/vnd.gremlin-v3.0+gryo-stringd
- { className: org.apache.tinkerpop.gremlin.driver.ser.GraphBinaryMessageSerializerV1 , config: { serializeResultToString: true }}                                                                     # application/vnd.gremlin-v3.0+gryo-stringd
[WARN] o.a.t.g.s.AbstractChannelizer - Could not find configured serializer class - org.apache.tinkerpop.gremlin.driver.ser.GraphBinaryMessageSerializerV1 - it will not be available
[ERROR] o.a.t.g.s.AbstractChannelizer - No serializers were successfully configured - server will not start.
[WARN] o.a.t.g.s.AbstractChannelizer - Could not find configured serializer class - org.apache.tinkerpop.gremlin.driver.ser.GraphBinaryMessageSerializerV1 - it will not be available
[ERROR] o.a.t.g.s.AbstractChannelizer - No serializers were successfully configured - server will not start.
33 replies