Hadoop中 Unable to load native-hadoop library for your platform... using builtin-java classes where applicable問題解決

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環境

[[email protected] soft]# cat /etc/issueCentOS release 6.5 (Final)Kernel \r on an \m[[email protected] soft]# uname -aLinux vm8028 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux[[email protected] soft]# hadoop versionHadoop 2.7.1Subversion https://git-wip-us.apache.org/repos/asf/hadoop.git -r 15ecc87ccf4a0228f35af08fc56de536e6ce657aCompiled by jenkins on 2015-06-29T06:04ZCompiled with protoc 2.5.0From source with checksum fc0a1a23fc1868e4d5ee7fa2b28a58aThis command was run using /usr/local/hadoop-2.7.1/share/hadoop/common/hadoop-common-2.7.1.jar

問題 ，安裝完Hadoop之後操作總報這樣的警告，但是不影響使用

[WARN ] 2018-04-18 18:07:39,897 method:org.apache.hadoop.util.NativeCodeLoader.<clinit>(NativeCodeLoader.java:62)
Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

[email protected] ~]# hadoop fs -ls /[WARN ] 2018-04-18 18:07:39,897 method:org.apache.hadoop.util.NativeCodeLoader.<clinit>(NativeCodeLoader.java:62)Unable to load native-hadoop library for your platform... using builtin-java classes where applicableFound 2 itemsdrwxr-xr-x   - root supergroup          0 2018-04-18 16:49 /parkdrwxr-xr-x   - root supergroup          0 2018-04-18 16:32 /user

問題原因:

因為Apache 提供的Hadoop的native庫 是32位的，我們的作業系統是64位的，所以需要使用64位作業系統編譯。或者下載編譯好的64位當地套件

這裡提供一個 http://dl.bintray.com/sequenceiq/sequenceiq-bin/

因為沒有找到2.7.1版本， (使用hadoop-native-64.tar 不行) 下載了hadoop-native-64-2.7.0.tar 替換本地庫

 

[[email protected] soft]# tar -xvf hadoop-native-64-2.7.0.tar -C hadoop-native-64-2.7.0[[email protected] lib]# mv /home/soft/hadoop-native-64-2.7.0  ./[[email protected] lib]# mv hadoop-native-64-2.7.0 native[[email protected] lib]# chown -R hadoop.hadoop native

重啟Hadoop後問題解決

[[email protected] ~]# hadoop fs -ls /Found 2 itemsdrwxr-xr-x   - root supergroup          0 2018-04-18 16:49 /parkdrwxr-xr-x   - root supergroup          0 2018-04-18 16:32 /user

 

 

 

 

 

 

[[email protected] ~]# hadoop fs -ls /
[WARN ] 2018-04-18 18:07:39,897 method:org.apache.hadoop.util.NativeCodeLoader.<clinit>(NativeCodeLoader.java:62)
Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

Hadoop中 Unable to load native-hadoop library for your platform... using builtin-java classes where applicable問題解決