在OS/X上找不到Hadoop本机库

Question

我hadoop从github 下载了源代码,并使用以下native选项进行编译:

mvn package -Pdist,native -DskipTests -Dtar -Dmaven.javadoc.skip=true

然后我将.dylib文件复制 到$ HADOOP_HOME/lib

cp -p hadoop-common-project/hadoop-common/target/hadoop-common-2.7.1/lib/native/*.dylib /usr/local/Cellar/hadoop/2.7.2/libexec/share/hadoop/lib

LD_LIBRARY_PATH已更新并且hdfs已重新启动:

 echo $LD_LIBRARY_PATH
 /usr/local/Cellar/hadoop/2.7.2/libexec/lib:
 /usr/local/Cellar/hadoop/2.7.2/libexec/share/hadoop/common/lib:/Library/Java/JavaVirtualMachines/jdk1.8.0_92.jdk/Contents/Home//jre/lib

(注意:这也意味着Hadoop的答案"无法为你的平台加载native-hadoop库"错误在docker-spark上？对我来说不起作用..)

但checknative仍然统一返回false:

$stop-dfs.sh && start-dfs.sh && hadoop checknative
16/06/13 16:12:32 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Stopping namenodes on [sparkbook]
sparkbook: stopping namenode
localhost: stopping datanode
Stopping secondary namenodes [0.0.0.0]
0.0.0.0: stopping secondarynamenode
16/06/13 16:12:50 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
16/06/13 16:12:50 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [sparkbook]
sparkbook: starting namenode, logging to /usr/local/Cellar/hadoop/2.7.2/libexec/logs/hadoop-macuser-namenode-sparkbook.out
localhost: starting datanode, logging to /usr/local/Cellar/hadoop/2.7.2/libexec/logs/hadoop-macuser-datanode-sparkbook.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to /usr/local/Cellar/hadoop/2.7.2/libexec/logs/hadoop-macuser-secondarynamenode-sparkbook.out
16/06/13 16:13:05 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
16/06/13 16:13:05 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Native library checking:
hadoop:  false
zlib:    false
snappy:  false
lz4:     false
bzip2:   false
openssl: false

Answer 1

为了完成全新安装的macOS 10.12,我必须执行以下操作:

1. 使用自制软件安装构建依赖项:

   brew install cmake maven openssl protobuf@2.5 snappy
   

2. 查看hadoop源代码

   git clone https://github.com/apache/hadoop.git
   cd hadoop
   git checkout rel/release-2.7.3
   

3. 将以下补丁应用于构建:

   diff --git a/hadoop-common-project/hadoop-common/src/CMakeLists.txt b/hadoop-common-project/hadoop-common/src/CMakeLists.txt
   index 942b19c..8b34881 100644
   --- a/hadoop-common-project/hadoop-common/src/CMakeLists.txt
   +++ b/hadoop-common-project/hadoop-common/src/CMakeLists.txt
   @@ -16,6 +16,8 @@
    # limitations under the License.
    #
   
   +SET(CUSTOM_OPENSSL_PREFIX /usr/local/opt/openssl)
   +
    cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
   
    # Default to release builds
   @@ -116,8 +118,8 @@ set(T main/native/src/test/org/apache/hadoop)
    GET_FILENAME_COMPONENT(HADOOP_ZLIB_LIBRARY ${ZLIB_LIBRARIES} NAME)
   
    SET(STORED_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
   -set_find_shared_library_version("1")
   -find_package(BZip2 QUIET)
   +set_find_shared_library_version("1.0")
   +find_package(BZip2 REQUIRED)
    if (BZIP2_INCLUDE_DIR AND BZIP2_LIBRARIES)
        GET_FILENAME_COMPONENT(HADOOP_BZIP2_LIBRARY ${BZIP2_LIBRARIES} NAME)
        set(BZIP2_SOURCE_FILES
   diff --git a/hadoop-common-project/hadoop-common/src/main/conf/core-site.xml b/hadoop-common-project/hadoop-common/src/main/conf/core-site.xml
   index d2ddf89..ac8e351 100644
   --- a/hadoop-common-project/hadoop-common/src/main/conf/core-site.xml
   +++ b/hadoop-common-project/hadoop-common/src/main/conf/core-site.xml
   @@ -17,4 +17,8 @@
    <!-- Put site-specific property overrides in this file. -->
   
    <configuration>
   +<property>
   +<name>io.compression.codec.bzip2.library</name>
   +<value>libbz2.dylib</value>
   +</property>
    </configuration>
   diff --git a/hadoop-tools/hadoop-pipes/pom.xml b/hadoop-tools/hadoop-pipes/pom.xml
   index 34c0110..70f23a4 100644
   --- a/hadoop-tools/hadoop-pipes/pom.xml
   +++ b/hadoop-tools/hadoop-pipes/pom.xml
   @@ -52,7 +52,7 @@
                        <mkdir dir="${project.build.directory}/native"/>
                        <exec executable="cmake" dir="${project.build.directory}/native" 
                            failonerror="true">
   -                      <arg line="${basedir}/src/ -DJVM_ARCH_DATA_MODEL=${sun.arch.data.model}"/>
   +                      <arg line="${basedir}/src/ -DJVM_ARCH_DATA_MODEL=${sun.arch.data.model} -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl"/>
                        </exec>
                        <exec executable="make" dir="${project.build.directory}/native" failonerror="true">
                          <arg line="VERBOSE=1"/>
   

4. 从源代码构建hadoop:

   mvn package -Pdist,native -DskipTests -Dtar -Dmaven.javadoc.skip=true
   

5. 指定JAVA_LIBRARY_PATH何时运行hadoop:

   $ JAVA_LIBRARY_PATH=/usr/local/opt/openssl/lib:/opt/local/lib:/usr/lib hadoop-dist/target/hadoop-2.7.3/bin/hadoop checknative -a
   16/10/14 20:16:32 INFO bzip2.Bzip2Factory: Successfully loaded & initialized native-bzip2 library libbz2.dylib
   16/10/14 20:16:32 INFO zlib.ZlibFactory: Successfully loaded & initialized native-zlib library
   Native library checking:
   hadoop:  true /Users/admin/Desktop/hadoop/hadoop-dist/target/hadoop-2.7.3/lib/native/libhadoop.dylib
   zlib:    true /usr/lib/libz.1.dylib
   snappy:  true /usr/local/lib/libsnappy.1.dylib
   lz4:     true revision:99
   bzip2:   true /usr/lib/libbz2.1.0.dylib
   openssl: true /usr/local/opt/openssl/lib/libcrypto.dylib
   

Answer 2

上面@andrewdotn的响应中缺少一些步骤：

1）对于步骤（3），通过将发布的文本添加到文本文件（例如“ patch.txt”）中来创建补丁，然后执行“ git apply patch.txt”

2）除了按照javadba的指示复制文件外，某些应用程序还要求您设置：

export HADOOP_OPTS="-Djava.library.path=${HADOOP_HOME}/lib/native"
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${HADOOP_HOME}/lib/native
export JAVA_LIBRARY_PATH=$JAVA_LIBRARY_PATH:${HADOOP_HOME}/lib/native