我正在尝试从R连接到远程Spark集群。 spark集群基于debian jessie构建，我可以在其上安装的R版本最多为3.3，但我需要3.4才能运行FactoMineR。所以我在另一台机器上安装了R，然后尝试使用sparklyr 0.8.4连接集群。
> sc <- spark_connect(master = "spark://spark-cluster-m:7077", spark_home="/usr/lib/spark/", version="2.2.1")
Error in start_shell(master = master, spark_home = spark_home, spark_version = version, :
SPARK_HOME directory '/usr/lib/spark/' not found
spark未安装在本地计算机上，但在spark-cluster-m上是：
jc@spark-cluster-m:/usr/lib/spark$ ls
bin conf data examples external jars LICENSE licenses NOTICE python R README.md RELEASE sbin work yarn
我错过了什么吗？ Spark群集位于Google云（测试帐户）上，带有R的VM也位于该群集上。如何验证端口spark可以连接到该端口？
感谢您的提示
@ user16 ...你是对的，这个特殊的问题似乎已经解决了，但是我的方法还没有结束。 我安装了相同的Spark版本（2.2.1的hadoop> 2.7）
这是我的新错误消息：
Error in force(code) :
Failed during initialize_connection: java.lang.IllegalArgumentException: requirement failed: Can only call getServletHandlers on a running MetricsSystem
at scala.Predef$.require(Predef.scala:224)
at org.apache.spark.metrics.MetricsSystem.getServletHandlers(MetricsSystem.scala:91)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:524)
at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2516)
at org.apache.spark.SparkContext.getOrCreate(SparkContext.scala)
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 sparklyr.Invoke.invoke(invoke.scala:137)
at sparklyr.StreamHandler.handleMethodCall(stream.scala:123)
at sparklyr.StreamHandler.read(stream.scala:66)
at sparklyr.BackendHandler.channelRead0(handler.scala:51)
at sparklyr.BackendHandler.channelRead0(handler.scala:4)
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
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 io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
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.processSelectedKeysOptimized(NioEventLoop.java:566)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(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:748)
Log: /tmp/RtmpTUh0z6/file5d231368db0_spark.log
---- Output Log ----
at io.netty.channel.nio.NioEventLoop.processS
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(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)
... 1 more
18/07/21 18:24:59 INFO StandaloneAppClient$ClientEndpoint: Connecting to master spark://spark-cluster-m:7077...
18/07/21 18:24:59 WARN StandaloneAppClient$ClientEndpoint: Failed to connect to master spark-cluster-m:7077
org.apache.spark.SparkException: Exception thrown in awaitResult:
at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205)
at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcTimeout.scala:75)
at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:100)
at org.apache.spark.rpc.RpcEnv.setupEndpointRef(RpcEnv.scala:108)
at org.apache.spark.deploy.client.StandaloneAppClient$ClientEndpoint$$anonfun$tryRegisterAllMasters$1$$anon$1.run(StandaloneAppClient.scala:106)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Failed to connect to spark-cluster-m/10.142.0.3:7077
at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:232)
at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:182)
at org.apache.spark.rpc.netty.NettyRpcEnv.createClient(NettyRpcEnv.scala:197)
at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:194)
at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:190)
... 4 more
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: spark-cluster-m/10.142.0.3:7077
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:257)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:291)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:631)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:566)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(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)
... 1 more
18/07/21 18:25:19 ERROR StandaloneSchedulerBackend: Application has been killed. Reason: All masters are unresponsive! Giving up.
18/07/21 18:25:19 WARN StandaloneSchedulerBackend: Application ID is not initialized yet.
18/07/21 18:25:19 INFO Utils: Successfully started service 'org.apache.spark.network.netty.NettyBlockTransferService' on port 46811.
18/07/21 18:25:19 INFO NettyBlockTransferService: Server created on 10.142.0.5:46811
18/07/21 18:25:19 INFO BlockManager: Using org.apache.spark.storage.RandomBlockReplicationPolicy for block replication policy
18/07/21 18:25:19 INFO BlockManagerMaster: Registering BlockManager BlockManagerId(driver, 10.142.0.5, 46811, None)
18/07/21 18:25:19 INFO BlockManagerMasterEndpoint: Registering block manager 10.142.0.5:46811 with 366.3 MB RAM, BlockManagerId(driver, 10.142.0.5, 46811, None)
18/07/21 18:25:19 INFO BlockManagerMaster: Registered BlockManager BlockManagerId(driver, 10.142.0.5, 46811, None)
18/07/21 18:25:19 INFO BlockManager: Initialized BlockManager: BlockManagerId(driver, 10.142.0.5, 46811, None)
18/07/21 18:25:19 INFO SparkUI: Stopped Spark web UI at http://10.142.0.5:4040
18/07/21 18:25:19 INFO StandaloneSchedulerBackend: Shutting down all executors
18/07/21 18:25:19 INFO CoarseGrainedSchedulerBackend$DriverEndpoint: Asking each executor to shut down
18/07/21 18:25:19 WARN StandaloneAppClient$ClientEndpoint: Drop Unregist
我看到它可以解析名称（=> 10.142.0.3） 另外，这似乎是一个很好的端口，好像我使用端口7000一样，我遇到了错误：
18/07/21 18:32:54 ERROR TransportResponseHandler: Still have 1 requests outstanding when connection from spark-cluster-m/10.142.0.3:7000 is closed
18/07/21 18:32:54 WARN StandaloneAppClient$ClientEndpoint: Could not connect to spark-cluster-m:7000: java.io.IOException: Connection reset by peer
18/07/21 18:32:54 WARN StandaloneAppClient$ClientEndpoint: Failed to connect to master spark-cluster-m:7000
但是我不知道这意味着什么。
您说我的配置是“特殊的”。如果有更好（简单）的方法，我将很高兴使用它。
这是我进行测试的方式： 我用spark（2.2.1）创建了一个Google dataproc集群 我在每个节点上都添加了Cassandra
在此阶段，一切正常。
然后，我需要安装FactoMineR，因为我想尝试HMFA。据说可以在R> 3.0.0上运行，因此似乎可以，但是取决于nlme，它不能安装在R <3.4.0上（而debian jessie backport中的版本是3.3。）
那我该怎么办？ 我必须承认，我从头开始重新启动完整的spark / cassandra集群安装不是很热情...