【发布时间】：2018-04-10 09:50:41
【问题描述】：
当我使用 JanusGraph 0.2.0 文档第 35 章中的示例时，就可以了。但是当我将 conf/hadoop-graph/hadoop-load.properties 中的 spark.master 从 local[*] 更改为 spark://192.168.63.105:7077 时，我会收到一些警告信息。
在 JanusGraph 0.2.0 文档的第 35 章中有一个注释： 本章中的示例基于在本地模式下运行 Spark。在独立模式下使用 Spark 或在 Yarn 或 Mesos 上运行 Spark 时需要额外的配置。 什么是附加配置？
警告信息：
> WARN org.apache.tinkerpop.gremlin.spark.process.computer.SparkGraphComputer - class org.apache.hadoop.mapreduce.lib.output.NullOutputFormat does not implement PersistRequestGraphAware and thus, persistence options are unknown -- assuming all options are possible
> WARN org.apache.spark.deploy.client.AppClient$ClientEndpoint - Failed to connect to master 192.168.63.105:7077
> java.lang.RuntimeException: java.io.EOFException
> at java.io.DataInputStream.readFully(DataInputStream.java:197)
> at java.io.DataInputStream.readUTF(DataInputStream.java:609)
> at java.io.DataInputStream.readFully(DataInputStream.java:564)
> at org.apache.spark.rpc.netty.RequestMessage$.readRpcAddress(NettyRpcEnv.scala:582)
> at org.apache.spark.rpc.netty.RequestMessage$.apply(NettyRpcEnv.scala:592)
> at org.apache.spark.rpc.netty.NettyRpcHandler.internalReceive(NettyRpcEnv.scala:651)
> at org.apache.spark.rpc.netty.NettyRpcHandler.receive(NettyRpcEnv.scala:636)
> at org.apache.spark.network.server.TransportRequestHandler.processRpcRequest(TransportRequestHandler.java:157)
> at org.apache.spark.network.server.TransportRequestHandler.handle(TransportRequestHandler.java:105)
> at org.apache.spark.network.server.TransportChannelHandler.channelRead(TransportChannelHandler.java:118)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
> at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:336)
> at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
> at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:336)
> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
> at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:336)
> at org.apache.spark.network.util.TransportFrameDecoder.channelRead(TransportFrameDecoder.java:85)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
> at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:336)
> at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
> at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
> at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
> at io.netty.channel.nio.NioEventLoop.processSelectedkey(NioEventLoop.java:643)
> at io.netty.channel.nio.NioEventLoop.processSelectedkeyOptimized(NioEventLoop.java:566)
> at io.netty.channel.nio.NioEventLoop.processSelectedkey(NioEventLoop.java:480)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:442)
> at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
> at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
> at java.lang.Thread.run(Thread.java:745)
> at org.apache.spark.network.client.TransportResponseHandler.handle(TransportResponseHandler.java:186)
> at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:106)
> at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:51)
> at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
> at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
> at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
> at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
> at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
> at org.apache.spark.network.util.TransportFrameDecoder.channelRead(TransportFrameDecoder.java:86)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
> at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
> at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1302)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
> at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
> at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
> at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
> at io.netty.channel.nio.NioEventLoop.processSelectedkey(NioEventLoop.java:646)
> at io.netty.channel.nio.NioEventLoop.processSelectedkeyOptimized(NioEventLoop.java:581)
> at io.netty.channel.nio.NioEventLoop.processSelectedkey(NioEventLoop.java:498)
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460)
> at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
> at java.lang.Thread.run(Thread.java:745)
我的配置文件是conf/janusgraph-hbase-es-test-spark.properties，内容如下：
storage.backend=hbase
storage.hostname=192.168.63.105,192.168.63.107,192.168.63.109
storage.hbase.ext.hbase.zookeeper.property.clientPort=2181
storage.hbase.table=janus_test_spark_7077
gremlin.graph=org.janusgraph.core.JanusGraphFactory
cache.db-cache=true
cache.db-cache-clean-wait=20
cache.db-cache-time=18000
cache.db-cache-size=0.5
index.search.backend=elasticsearch
index.search.hostname=192.168.63.105,192.168.63.107,192.168.63.109
index.search.elasticsearch.client-only=true
我使用的spark版本是spark-2.2.0-bin-hadoop2.7。
我也尝试了 spark-1.6.0-bin-hadoop2.6，警告信息如下：
WARN org.apache.spark.scheduler.TaskSetManager - Lost task 0.0 in stage 0.0 (TID 0, SparkWorker109): java.io.InvalidClassException: org.apache.spark.rdd.MapPartitionsRDD; local class incompatible: stream classdesc serialVersionUID=6732270565076291202, local class SerialVersionUID=-1059539896677275380
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:616)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1630)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1521)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1781)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2018)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:373)
at org.apache.spark.serializer:JavaDeserializationStream.readObject(JavaSerializer.scala:76)
at org.apache.spark.serializer:JavaSerializerInstance.deserialize(JavaSerializer.scala:115)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:64)
at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
at org.apache.spark.scheduler.Task.run(Task.scala:89)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:213)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
感谢您的关注和帮助。
【问题讨论】：
-
问题在于 JanusGraph 使用的 Spark 版本以及您用于启动 Standalone 集群的版本。你用的是什么版本的 Spark？我注意到JanusGraph 0.2.0 已经发布。你能检查一下这是否能解决你的问题吗？
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感谢您的回答。我分别使用 spark-1.6.0-bin-hadoop2.6,spark-2.1.1-bin-hadoop2.7 和 spark-2.2.0-bin-hadoop2.7，错误信息是一样的。但是当我使用 JanusGraph 0.2.0 时，我遇到另一个问题，即 gremlin> hdfs.ls()，我得到错误信息：org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProto$GetFileInfoRequestProto cannot be cast to com .google.protobuf.Message.
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知道JanusGraph 0.2.0下运行gremlin>hdfs.ls()报错的原因，即JanusGraph-0.2中没有hadoop-hdfs-2.7.2.jar .0-hadoop2/lib/.但我仍然无法连接到 spark.master，即 spark://192.168.63.105:7077