为什么自制的Hadoop 2.3不能运行OSX Mavericks？

Question

使用自制软件安装hadoop后,我遇到了以下问题.我按照指南在这里:

http://glebche.appspot.com/static/hadoop-ecosystem/hadoop-hive-tutorial.html

在bashrc中设置以下环境变量:

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home
export HADOOP_INSTALL=/usr/local/Cellar/hadoop/2.3.0
export HADOOP_HOME=$HADOOP_INSTALL
export PATH=$PATH:$HADOOP_INSTALL/bin
export PATH=$PATH:$HADOOP_INSTALL/sbin
export HADOOP_MAPRED_HOME=$HADOOP_INSTALL
export HADOOP_COMMON_HOME=$HADOOP_INSTALL
export HADOOP_HDFS_HOME=$HADOOP_INSTALL
export YARN_HOME=$HADOOP_INSTALL

运行hadoop namenode -format之后..我尝试运行start-dfs.sh并获取以下内容:

14/05/05 21:19:27 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: set hadoop variables
localhost: starting namenode, logging to /usr/local/Cellar/hadoop/2.3.0/libexec/logs/mynotebook.local.out
localhost: Error: Could not find or load main class org.apache.hadoop.hdfs.server.namenode.NameNode
localhost: set hadoop variables
localhost: starting datanode, logging to /usr/local/Cellar/hadoop/2.3.0/libexec/logs/mynotebook.local.out
localhost: Error: Could not find or load main class org.apache.hadoop.hdfs.server.datanode.DataNode
Starting secondary namenodes [0.0.0.0]
0.0.0.0: set hadoop variables
0.0.0.0: secondarynamenode running as process 12747. Stop it first.
14/05/05 21:19:37 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

如何解决这个问题？

Answer 1

根据第二条消息的第一行，

"14/05/05 21:19:27 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable"

我假设您正在 64 位操作系统中运行 hadoop。Hadoop 是在 32 位系统中默认构建的，我遇到了同样的问题和同样的消息。您所要做的就是从系统上的源代码重新构建 hadoop。

我建议你使用下面的指南，它适用于 2.2 版本，但也适用于 2.3 版本

http://csrdu.org/nauman/2014/01/23/geting-started-with-hadoop-2-2-0-building/

或者官方指南

http://hadoop.apache.org/docs/r2.3.0/hadoop-project-dist/hadoop-common/NativeLibraries.html#Build