问题描述
我使用 JanusGraph0.5.3 在 Windows 上进行一些测试。我想使用 Java 客户端连接 gremlin-server。 我启动服务器
gremlin-server.bat
好像成功了
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/D:/Users/Lenovo/Downloads/janusgraph-0.5.3/lib/slf4j-log4j12-1.7.12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/D:/Users/Lenovo/Downloads/janusgraph-0.5.3/lib/logback-classic-1.1.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
log4j: Using URL [file:/D:/Users/Lenovo/Downloads/janusgraph-0.5.3/conf/gremlin-server/log4j-server.properties] for automatic log4j configuration.
log4j: Reading configuration from URL file:/D:/Users/Lenovo/Downloads/janusgraph-0.5.3/conf/gremlin-server/log4j-server.properties
log4j: Parsing for [root] with value=[INFO,A1,A2].
log4j: Level token is [INFO].
log4j: Category root set to INFO
log4j: Parsing appender named "A1".
log4j: Parsing layout options for "A1".
log4j: Setting property [conversionPattern] to [%-4r [%t] %-5p %c %x - %m%n].
log4j: End of parsing for "A1".
log4j: Setting property [file] to [D:\Users\Lenovo\Downloads\janusgraph-0.5.3\logs/gremlin-server.log].
log4j: Setting property [threshold] to [INFO].
log4j: setFile called: D:\Users\Lenovo\Downloads\janusgraph-0.5.3\logs/gremlin-server.log,true
log4j: setFile ended
log4j: Parsed "A1" options.
log4j: Parsing appender named "A2".
log4j: Parsing layout options for "A2".
log4j: Setting property [conversionPattern] to [%-4r [%t] %-5p %c %x - %m%n].
log4j: End of parsing for "A2".
log4j: Setting property [threshold] to [INFO].
log4j: Parsed "A2" options.
log4j: Finished configuring.
0 [main] INFO com.jcabi.manifests.Manifests - 113 attributes loaded from 263 stream(s) in 98ms,113 saved,3649 ignored: ["Agent-Class","Ant-Version","Archiver-Version","Automatic-Module-Name","Bnd-LastModified","Boot-Class-Path","Branch","Build-Date","Build-Host","Build-Id","Build-Java-Version","Build-Jdk","Build-Jdk-Spec","Build-Job","Build-Number","Build-Timestamp","Build-Version","Built-At","Built-By","Built-Date","Built-OS","Built-On","Built-Status","Bundle-ActivationPolicy","Bundle-Activator","Bundle-BuddyPolicy","Bundle-Category","Bundle-Classpath","Bundle-ContactAddress","Bundle-Description","Bundle-DocURL","Bundle-License","Bundle-ManifestVersion","Bundle-Name","Bundle-NativeCode","Bundle-requiredExecutionEnvironment","Bundle-SymbolicName","Bundle-vendor","Bundle-Version","Can-redefine-Classes","Change","Class-Path","copyright","Created-By","DSTAMP","DynamicImport-Package","Eclipse-BuddyPolicy","Eclipse-ExtensibleAPI","Embed-Dependency","Embed-Transitive","Export-Package","Extension-Name","Extension-name","Fragment-Host","Gradle-Version","Gremlin-Lib-Paths","Gremlin-Plugin-Dependencies","Gremlin-Plugin-Paths","Ignore-Package","Implementation-Build","Implementation-Build-Date","Implementation-Title","Implementation-URL","Implementation-vendor","Implementation-vendor-Id","Implementation-Version","Import-Package","Include-Resource","jcabi-Build","jcabi-Date","jcabi-Version","Java-vendor","Java-Version","Main-Class","Manifest-Version","Maven-Version","Module-Email","Module-Origin","Module-Owner","Module-Source","Multi-Release","Originally-Created-By","Os-Arch","Os-Name","Os-Version","Package","Premain-Class","Private-Package","Provide-Capability","Require-Bundle","Require-Capability","Scm-Connection","Scm-Revision","Scm-Url","Specification-Title","Specification-vendor","Specification-Version","TODAY","TSTAMP","Time-Zone-Database-Version","Tool","X-Compile-Elasticsearch-Snapshot","X-Compile-Elasticsearch-Version","X-Compile-Lucene-Version","X-Compile-Source-JDK","X-Compile-Target-JDK","hash","implementation-version","mode","package","service","url","version"]
1 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - 3.4.6
\,/
(o o)
-----oOOo-(3)-oOOo-----
81 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - Configuring Gremlin Server from D:\Users\Lenovo\Downloads\janusgraph-0.5.3\conf\gremlin-server\gremlin-server.yaml
122 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics ConsoleReporter configured with report interval=180000ms
123 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics CsvReporter configured with report interval=180000ms to fileName=/tmp/gremlin-server-metrics.csv
160 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics JmxReporter configured with domain= and agentId=
161 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics Slf4jReporter configured with interval=180000ms and loggerName=org.apache.tinkerpop.gremlin.server.Settings$Slf4jReporterMetrics
610 [main] INFO org.janusgraph.diskstorage.configuration.builder.ReadConfigurationBuilder - Set default timestamp provider MICRO
618 [main] INFO org.janusgraph.graphdb.idmanagement.UniqueInstanceIdRetriever - Generated unique-instance-id=c0a8110121912-DESKTOP-P5265PE1
627 [main] INFO org.janusgraph.diskstorage.Backend - Initiated backend operations thread pool of size 32
678 [main] INFO org.janusgraph.diskstorage.log.kcvs.KCVSLog - Loaded unidentified ReadMarker start time 2021-01-25T01:28:22.797Z into org.janusgraph.diskstorage.log.kcvs.KCVSLog$MessagePuller@4e70a728
679 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - Graph [graph] was successfully configured via [conf/janusgraph-inmemory.properties].
679 [main] INFO org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor - Initialized Gremlin thread pool. Threads in pool named with pattern gremlin-*
712 [main] INFO org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor - Initialized GremlinExecutor and preparing GremlinScriptEngines instances.
2658 [main] INFO org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor - Initialized gremlin-groovy GremlinScriptEngine and registered metrics
2660 [main] INFO org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor - A GraphTraversalSource is Now bound to [g] with graphtraversalsource[standardjanusgraph[inmemory:[127.0.0.1]],standard]
2672 [main] INFO org.apache.tinkerpop.gremlin.server.op.OpLoader - Adding the standard OpProcessor.
2674 [main] INFO org.apache.tinkerpop.gremlin.server.op.OpLoader - Adding the session OpProcessor.
2729 [main] INFO org.apache.tinkerpop.gremlin.server.op.OpLoader - Adding the traversal OpProcessor.
2735 [main] INFO org.apache.tinkerpop.gremlin.server.op.traversal.TraversalOpProcessor - Initialized cache for TraversalOpProcessor with size 1000 and expiration time of 600000 ms
2809 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - Executing start up LifeCycleHook
2818 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - Executed once at startup of Gremlin Server.
2822 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - idleConnectionTimeout was set to 0 which resolves to 0 seconds when configuring this value - this feature will be disabled
2823 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - keepAliveInterval was set to 0 which resolves to 0 seconds when configuring this value - this feature will be disabled
2825 [main] WARN org.apache.tinkerpop.gremlin.server.AbstractChannelizer - The org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV3d0 serialization class is deprecated.
2861 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/vnd.gremlin-v3.0+gryo with org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV3d0
2862 [main] WARN org.apache.tinkerpop.gremlin.server.AbstractChannelizer - The org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV3d0 serialization class is deprecated.
2864 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/vnd.gremlin-v3.0+gryo-stringd with org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV3d0
2880 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/vnd.gremlin-v3.0+json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0
2880 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0
2882 [main] WARN org.apache.tinkerpop.gremlin.server.AbstractChannelizer - The org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV1d0 serialization class is deprecated.
2882 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/vnd.gremlin-v1.0+gryo with org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV1d0
2883 [main] WARN org.apache.tinkerpop.gremlin.server.AbstractChannelizer - The org.apache.tinkerpop.gremlin.driver.ser.GryoLiteMessageSerializerV1d0 serialization class is deprecated.
2884 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/vnd.gremlin-v1.0+gryo-lite with org.apache.tinkerpop.gremlin.driver.ser.GryoLiteMessageSerializerV1d0
2884 [main] WARN org.apache.tinkerpop.gremlin.server.AbstractChannelizer - The org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV1d0 serialization class is deprecated.
2884 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/vnd.gremlin-v1.0+gryo-stringd with org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV1d0
2887 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/vnd.gremlin-v2.0+json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV2d0
2887 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - application/json already has org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0 configured - it will not be replaced by org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV2d0,change order of serialization configuration if this is not desired.
2891 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - Configured application/vnd.gremlin-v1.0+json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV1d0
2892 [main] INFO org.apache.tinkerpop.gremlin.server.AbstractChannelizer - application/json already has org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0 configured - it will not be replaced by org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV1d0,change order of serialization configuration if this is not desired.
3198 [gremlin-server-boss-1] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - Gremlin Server configured with worker thread pool of 1,gremlin pool of 16 and boss thread pool of 1.
3198 [gremlin-server-boss-1] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - Channel started at port 8182.
但是，当我执行 example-remotegraph
mvn clean install
mvn exec:java -pl :example-remotegraph
我有一个例外。 UnkNown external index backend: jgex
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------< org.janusgraph:example-remotegraph >-----------------
[INFO] Building Example-RemoteGraph: Example with RemoteGraph 0.5.3
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- exec-maven-plugin:1.6.0:java (default-cli) @ example-remotegraph ---
0 [org.janusgraph.example.RemoteGraphApp.main()] INFO org.janusgraph.example.RemoteGraphApp - opening graph
542 [org.janusgraph.example.RemoteGraphApp.main()] INFO org.janusgraph.example.RemoteGraphApp - creating schema
972 [org.janusgraph.example.RemoteGraphApp.main()] INFO org.apache.tinkerpop.gremlin.driver.Connection - Created new connection for ws://127.0.0.1:8182/gremlin
977 [org.janusgraph.example.RemoteGraphApp.main()] INFO org.apache.tinkerpop.gremlin.driver.Connection - Created new connection for ws://127.0.0.1:8182/gremlin
978 [org.janusgraph.example.RemoteGraphApp.main()] INFO org.apache.tinkerpop.gremlin.driver.ConnectionPool - opening connection pool on Host{address=127.0.0.1/127.0.0.1:8182,hostUri=ws://127.0.0.1:8182/gremlin} with core size of 2
1270 [org.janusgraph.example.RemoteGraphApp.main()] ERROR org.janusgraph.example.GraphApp - org.apache.tinkerpop.gremlin.driver.exception.ResponseException: UnkNown external index backend: jgex
java.util.concurrent.CompletionException: org.apache.tinkerpop.gremlin.driver.exception.ResponseException: UnkNown external index backend: jgex
at java.util.concurrent.CompletableFuture.reportJoin(CompletableFuture.java:375)
at java.util.concurrent.CompletableFuture.join(CompletableFuture.java:1947)
at org.apache.tinkerpop.gremlin.driver.ResultSet.one(ResultSet.java:119)
at org.apache.tinkerpop.gremlin.driver.ResultSet$1.hasNext(ResultSet.java:171)
at java.util.Iterator.forEachRemaining(Iterator.java:115)
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndcopyInto(AbstractPipeline.java:472)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
at org.janusgraph.example.RemoteGraphApp.createSchema(RemoteGraphApp.java:188)
at org.janusgraph.example.GraphApp.runApp(GraphApp.java:294)
at org.janusgraph.example.RemoteGraphApp.main(RemoteGraphApp.java:194)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:282)
at java.lang.Thread.run(Thread.java:748)
我认为我正确地遵循了指南，如何解决？
解决方法
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