java - 如何在Hadoop中加载 native 库

Question

在此命令上hadoop checknative -a
输出是:

16/09/11 09:03:15 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 
16/09/11 09:03:15 INFO util.ExitUtil: Exiting with status 1

如何解决

Answer 1

hadoop官方网站上提供了指南:https://hadoop.apache.org/docs/r2.4.1/hadoop-project-dist/hadoop-common/NativeLibraries.html

It is fairly easy to use the native hadoop library:

1. Review the components.
2. Review the supported platforms.
3. Either download a hadoop release, which will include a pre-built version of the native hadoop library, or build your own version of the native hadoop library. Whether you download or build, the name for the library is the same: libhadoop.so
4. Install the compression codec development packages (>zlib-1.2, >gzip-1.2): + If you download the library, install one or more development packages - whichever compression codecs you want to use with your deployment. + If you build the library, it is mandatory to install both development packages.
5. Check the runtime log files.