我想安装和运行哈马使用哈马安装指南，在整个过程中使用端口号54310，但是当我想在哈马上运行一些例子，它给了我一个错误。 即重试连接到服务器：localhost / 127.0.0.1:40000
这里是我的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> 我已经启动了HDFS，这是运行PI示例后的错误信息。
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
哈马编译为hadoop 1.x，所以不要使用hadoop 2.x
其实你的财产：
<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>
您定义客户端地址以访问HDFS。 检查你的core-site.xml这个属性的当前值是什么。
我从来没有使用哈马，但我想你必须改变这个属性：
<property> <name>bsp.master.address</name> <value>localhost:40000</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>
也许尝试检查防火墙的规则，端口40000可以被阻止或已经使用。