Call to master/192.168.137.101:9001 failed on connection exception: ja...
java.net.ConnectException: Call to master/192.168.137.101:9001 failed on connection exception: java.net.ConnectException: Connection refused
at org.apache.hadoop.ipc.Client.wrapException(Client.java:1099)
at org.apache.hadoop.ipc.Client.call(Client.java:1075)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
at org.apache.hadoop.mapred.$Proxy10.getProtocolVersion(Unknown Source)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:396)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:379)
at org.apache.hadoop.mapred.JobClient.createRPCProxy(JobClient.java:480)
at org.apache.hadoop.mapred.JobClient.init(JobClient.java:474)
at org.apache.hadoop.mapred.JobClient.(JobClient.java:457)
at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:418)
at org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:137)
at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:134)
at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57)
at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1326)
at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1118)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:951)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:258)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:215)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:406)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:689)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:557)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:692)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:489)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:434)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:560)
at org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:184)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1206)
at org.apache.hadoop.ipc.Client.call(Client.java:1050)
… 24 more
Job Submission failed with exception ‘java.net.ConnectException(Call to master/192.168.137.101:9001 failed on connection exception: java.net.ConnectException: Connection refused)’
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MapRedTask
解决方案:执行命令./hadoop namenode -format
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Spark-数据分析可视化Zeppelin
官网介绍 Apache Zeppelin提供了web版的类似ipython的notebook,用于做数据分析和可视化。背后可以接入不同的数据处理引擎,包括Spark, hive, tajo等,原生支持scala, Java, shell, markdown等。它的整体展现和使用形式和Databricks Cloud是一样的。 安装 其他组件都是好安装的,直接mvn install是没问题的。 而且zeppelin-web项目,里面使用了node, grunt, bower这些前端的工具。可以自己源码编译也可以使用二进制包直接使用。目前官网最新的版本是0.5.6版本,支持spark1.5和hadoop2.x版本。 自己编译: - 安装好node, grunt, bower brew install npm npm install -g node 修改pom <plugin> <groupId>com.github.eirslett</groupId> <artifactId>frontend-maven-plugin</artifac...
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hadoop中datanode无法启动,报Caused by: java.net.NoRouteToHostException: No ro...
今天把hadoop环境给搭起来了,在master上面启动hadoop后,jps查看进程,SecondaryNameNodeNameNode JpsDataNodeJobTrackerTaskTracker都没问题。但是去 http://master:50070/dfshealth.jsp查 看,live nodes为0。所以我到slave1和slave2上面去执行jps查看进程,结果都没有datanode进程,也就是说datanode没有启动成 功,所以我就到logs里面去执行less hadoop-hadoop-datanode-slave2.log,发现报错的内容如下: 2013-06-11 02:22:13,637 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG: /** STARTUP_MSG: Starting DataNode STARTUP_MSG: host = slave2/192.168.137.112 STARTUP_MSG: args = [] STARTUP_MSG: vers...
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