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ASF GitHub Bot commented on TINKERPOP-1811: ------------------------------------------- Github user aolieman commented on the issue: https://github.com/apache/tinkerpop/pull/753 Thanks @spmallette , this should really help. > Improve error reporting for serialization errors between gremlin-python and > gremlin-server > ------------------------------------------------------------------------------------------ > > Key: TINKERPOP-1811 > URL: https://issues.apache.org/jira/browse/TINKERPOP-1811 > Project: TinkerPop > Issue Type: Improvement > Components: python, server > Affects Versions: 3.2.6 > Reporter: Hugo Arts > Priority: Minor > > We ran into an issue while attempting to add a PartitionStrategy to our > traversals. This is a small example of a traversal I tried: > {code:none} > remote = DriverRemoteConnection('ws://localhost:8182/gremlin', > 'DSE_GRAPH_QUICKSTART.g') > strategy = PartitionStrategy('community_id', '2097442560', 2097442560) > g = Graph().traversal().withRemote(remote).withStrategies(strategy) > print(g.V().toList()) > {code} > The third argument of PartitionStrategy should be a list. However, the > traversal strategies in gremlin-python do not do any kind of argument/type > checking, and any mistake you make results in the following error from > gremlin server: > {noformat} > ERROR [gremlin-server-worker-1] 2017-10-25 10:15:53,285 GREMLIN > TraversalOpProcessor.java:365 - Could not deserialize the Traversal instance > {noformat} > I've omitted the [full > traceback|https://gist.github.com/anonymous/2ad6541d0169256afb1a23fbdc376009] > for brevity. There is not much indication as to what has gone wrong. > gremlin-python gives this error: > {noformat} > gremlin_python.driver.protocol.GremlinServerError: 599: None > {noformat} > Which is also unhelpful. We were eventually able to figure out what we were > doing wrong, but it would be very nice to have either some input validation > on the gremlin-python side, or have gremlin-server be more specific about the > nature of the deserialisation error (or both). -- This message was sent by Atlassian JIRA (v6.4.14#64029)