我想使用在整个过程中使用端口号 54310 的 hama 安装指南来安装和运行 hama，但是当我想在 hama 上运行一些示例时，它给了我一个错误。即重试连接到服务器:localhost/127.0.0.1:40000
这是我的 hama-site.xml
<configuration>
<property>
<name>bsp.master.address</name>
<value>localhost</value>
<description>The address of the bsp master server. Either the
literal string "local" or a host[:port] (where host is a name or
IP address) for distributed mode.
</description>
</property>
<property>
<name>bsp.system.dir</name>
<value>/tmp/hama-hduser/bsp/system</value>
<description>The shared directory where BSP stores control files.
</description>
</property>
<property>
<name>bsp.local.dir</name>
<value>/tmp/hama-hduser/bsp/local</value>
<description>local directory for temporal store.</description>
</property>
<property>
<name>hama.tmp.dir</name>
<value>/tmp/hama-hduser</value>
<description>Temporary directory on the local filesystem.</description>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:54310</value>
<description>
The name of the default file system. Either the literal string
"local" or a host:port for HDFS.
</description>
</property>
</configuration>
I have already started HDFS, here is the error message after run the PI example.
hduser@ubuntu:/opt/hama$ /opt/hama/bin/hama jar hama-examples-0.6.4.jar pi
14/05/28 05:50:57 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:50:58 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:50:59 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:51:00 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:51:01 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:51:02 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:51:03 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:51:04 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 7 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:51:05 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
14/05/28 05:51:06 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:40000. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
java.net.ConnectException: Call to localhost/127.0.0.1:40000 failed on connection exception: java.net.ConnectException: Connection refused
at org.apache.hama.ipc.Client.wrapException(Client.java:937)
at org.apache.hama.ipc.Client.call(Client.java:913)
at org.apache.hama.ipc.RPC$Invoker.invoke(RPC.java:238)
at com.sun.proxy.$Proxy1.getProtocolVersion(Unknown Source)
at org.apache.hama.ipc.RPC.checkVersion(RPC.java:434)
at org.apache.hama.ipc.RPC.getProxy(RPC.java:426)
at org.apache.hama.ipc.RPC.getProxy(RPC.java:403)
at org.apache.hama.ipc.RPC.getProxy(RPC.java:368)
at org.apache.hama.bsp.BSPJobClient.init(BSPJobClient.java:230)
at org.apache.hama.bsp.BSPJobClient.<init>(BSPJobClient.java:221)
at org.apache.hama.bsp.BSPJob.<init>(BSPJob.java:57)
at org.apache.hama.bsp.BSPJob.<init>(BSPJob.java:75)
at org.apache.hama.examples.PiEstimator.main(PiEstimator.java:119)
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:483)
at org.apache.hama.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
at org.apache.hama.util.ProgramDriver.driver(ProgramDriver.java:139)
at org.apache.hama.examples.ExampleDriver.main(ExampleDriver.java:45)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.hama.util.RunJar.main(RunJar.java:146)
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712)
at org.apache.hama.util.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:204)
at org.apache.hama.util.BSPNetUtils.connect(BSPNetUtils.java:375)
at org.apache.hama.util.BSPNetUtils.connect(BSPNetUtils.java:347)
at org.apache.hama.ipc.Client$Connection.setupConnection(Client.java:364)
at org.apache.hama.ipc.Client$Connection.setupIOstreams(Client.java:408)
at org.apache.hama.ipc.Client$Connection.access$1600(Client.java:195)
at org.apache.hama.ipc.Client.getConnection(Client.java:1049)
at org.apache.hama.ipc.Client.call(Client.java:888)
... 23 more
最佳答案
Hama 是为 hadoop 1.x 编译的，所以不要使用 hadoop 2.x
关于java - ubuntu 14.04 上的 apache hama 安装错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23912772/
我真的很习惯使用Ruby编写以下代码:my_hash={}my_hash['test']=1Java中对应的数据结构是什么？ 最佳答案 HashMapmap=newHashMap();map.put("test",1);我假设？ 关于java-等价于Java中的RubyHash，我们在StackOverflow上找到一个类似的问题： https://stackoverflow.com/questions/22737685/
我想设置一个默认日期，例如实际日期，我该如何设置？还有如何在组合框中设置默认值顺便问一下，date_field_tag和date_field之间有什么区别？ 最佳答案 试试这个:将默认日期作为第二个参数传递。youcorrectlysetthedefaultvalueofcomboboxasshowninyourquestion. 关于ruby-on-rails-date_field_tag，如何设置默认日期？[rails上的ruby]，我们在StackOverflow上找到一个类似的问
我将我的Rails应用程序部署到OpenShift，它运行良好，但我无法在生产服务器上运行“Rails控制台”。它给了我这个错误。我该如何解决这个问题？我尝试更新rubygems，但它也给出了权限被拒绝的错误，我也无法做到。railsc错误:Warning:You'reusingRubygems1.8.24withSpring.UpgradetoatleastRubygems2.1.0andrun`gempristine--all`forbetterstartupperformance./opt/rh/ruby193/root/usr/share/rubygems/rubygems
我正在尝试从Postgresql表(table1)中获取数据，该表由另一个相关表(property)的字段(table2)过滤。在纯SQL中，我会这样编写查询:SELECT*FROMtable1JOINtable2USING(table2_id)WHEREtable2.propertyLIKE'query%'这工作正常:scope:my_scope,->(query){includes(:table2).where("table2.property":query)}但我真正需要的是使用LIKE运算符进行过滤，而不是严格相等。然而，这是行不通的:scope:my_scope,->(que
我试过重新启动apache，缓存的页面仍然出现，所以一定有一个文件夹在某个地方。我没有“公共(public)/缓存”，那么我还应该查看哪些其他地方？是否有一个URL标志也可以触发此效果？ 最佳答案 您需要触摸一个文件才能清除phusion，例如:touch/webapps/mycook/tmp/restart.txt参见docs 关于ruby-如何在Ubuntu中清除RubyPhusionPassenger的缓存？，我们在StackOverflow上找到一个类似的问题：
我正在尝试使用boilerpipe来自JRuby。我看过guide从JRuby调用Java，并成功地将它与另一个Java包一起使用，但无法弄清楚为什么同样的东西不能用于boilerpipe。我正在尝试基本上从JRuby中执行与此Java等效的操作:URLurl=newURL("http://www.example.com/some-location/index.html");Stringtext=ArticleExtractor.INSTANCE.getText(url);在JRuby中试过这个:require'java'url=java.net.URL.new("http://www
我只想对我一直在思考的这个问题有其他意见，例如我有classuser_controller和classuserclassUserattr_accessor:name,:usernameendclassUserController//dosomethingaboutanythingaboutusersend问题是我的User类中是否应该有逻辑user=User.newuser.do_something(user1)oritshouldbeuser_controller=UserController.newuser_controller.do_something(user1,user2)我
什么是ruby的rack或python的Java的wsgi？还有一个路由库。 最佳答案 来自Python标准PEP333:Bycontrast,althoughJavahasjustasmanywebapplicationframeworksavailable,Java's"servlet"APImakesitpossibleforapplicationswrittenwithanyJavawebapplicationframeworktoruninanywebserverthatsupportstheservletAPI.ht
之前在培训新生的时候，windows环境下配置opencv环境一直教的都是网上主流的vsstudio配置属性表，但是这个似乎对新生来说难度略高(虽然个人觉得完全是他们自己的问题)，加之暑假之后对cmake实在是爱不释手，且这样配置确实十分简单(其实都不需要配置)，故斗胆妄言vscode下配置CV之法。其实极为简单，图比较多所以很长。如果你看此文还配不好，你应该思考一下是不是自己的问题。闲话少说，直接开始。0.CMkae简介有的人到大二了都不知道cmake是什么，我不说是谁。CMake是一个开源免费并且跨平台的构建工具，可以用简单的语句来描述所有平台的编译过程。它能够根据当前所在平台输出对应的m
这篇文章是继上一篇文章“Observability：从零开始创建Java微服务并监控它（一）”的续篇。在上一篇文章中，我们讲述了如何创建一个Javaweb应用，并使用Filebeat来收集应用所生成的日志。在今天的文章中，我来详述如何收集应用的指标，使用APM来监控应用并监督web服务的在线情况。源码可以在地址 https://github.com/liu-xiao-guo/java_observability 进行下载。摄入指标指标被视为可以随时更改的时间点值。当前请求的数量可以改变任何毫秒。你可能有1000个请求的峰值，然后一切都回到一个请求。这也意味着这些指标可能不准确，你还想提取最小/