[英]Problems running hadoop on mac osx with default example
我安裝了hadoop使用:brew install hadoop。
我安裝了以下版本:
hadoop version
Hadoop 2.3.0
Subversion http://svn.apache.org/repos/asf/hadoop/common -r 1567123
Compiled by jenkins on 2014-02-11T13:40Z
Compiled with protoc 2.5.0
From source with checksum dfe46336fbc6a044bc124392ec06b85
This command was run using /usr/local/Cellar/hadoop/2.3.0/libexec/share/hadoop/common/hadoop-common-2.3.0.jar
為什么啟動單節點集群失敗? brew安裝hadoop安裝32或64位版本的hadoop? 我有一個64位系統......
./start-dfs.sh
14/04/03 13:29:43 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: ssh: connect to host localhost port 22: Connection refused
localhost: ssh: connect to host localhost port 22: Connection refused
Starting secondary namenodes [0.0.0.0]
0.0.0.0: ssh: connect to host 0.0.0.0 port 22: Connection refused
14/04/03 13:29:45 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
我的〜/ .profile看起來像:
#Hadoop variables
echo 'Set Hadoop Variables...'
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home
export HADOOP_HOME=/usr/local/Cellar/hadoop/2.3.0
export PATH=$PATH:$HADOOP_INSTALL/bin
export PATH=$PATH:$HADOOP_INSTALL/sbin
我可以運行哪個測試示例來驗證hadoop是否正常工作?
確保在“ 系統偏好設置”下單擊“ 文件共享”下的“ 遠程登錄 ” :
為了檢查它是否運行,請從命令行嘗試jps
命令。 你應該得到類似的東西:
43730 TaskTracker
43674 JobTracker
43730 NameNode
43582 DataNode
43611 SecondaryNameNode
43821 Jps
現在嘗試一些hadoop示例:
$ hadoop jar /usr/local/Cellar/hadoop/2.3.0/libexec/hadoop-examples-*.jar pi 10 100
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