環境：
ubuntu-linux 16.04

spark-2.3.1-bin-hadoop2.7
hadoop-2.7.7
可能的原因：
１．so文件版本不對
查看命令：
file libhadoop.so.1.0.0
libhadoop.so.1.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=c08a9ec9d1c3cf9bccf3ea87ed51d077b5651b1a, not stripped

２．ldd以后缺少連接：
查看命令：
(python2.7) appleyuchi@ubuntu:~/bigdata/hadoop-2.7.7/lib/native$ ldd libhdfs.so.0.0.0
? ? linux-vdso.so.1 => ?(0x00007fff80b18000)
? ? libjvm.so => /home/appleyuchi/Java/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so (0x00007febd438b000)
? ? libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007febd4187000)
? ? libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007febd3f6a000)
? ? libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007febd3ba0000)
? ? /lib64/ld-linux-x86-64.so.2 (0x00007febd558d000)
? ? libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007febd3897000)
(python2.7) appleyuchi@ubuntu:~/bigdata/hadoop-2.7.7/lib/native$ ldd libhdfs.so
? ? linux-vdso.so.1 => ?(0x00007ffc710e4000)
? ? libjvm.so => /home/appleyuchi/Java/jdk1.8.0_131/jre/lib/amd64/server/libjvm.so (0x00007f744d082000)
? ? libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f744ce7e000)
? ? libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f744cc61000)
? ? libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f744c897000)
? ? /lib64/ld-linux-x86-64.so.2 (0x00007f744e284000)
? ? libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f744c58e000)
要確保每個=>右側都不能出現not found
否則就修改.bashrc中LD_LIBRARY_PATH來增加路徑

３．如果想自己編譯，想要安裝protobuf，那么可以參考以下連接
https://blog.csdn.net/blue_it/article/details/53996216

https://blog.csdn.net/appleyuchi/article/details/81667992

spark出現Unable to load native-hadoop library for your platform
修改spark-env.sh如下：

export HADOOP_HOME=~/bigdata/hadoop-2.7.7
export LD_LIBRARY_PATH=$HADOOP_HOME/lib/native
#export SPARK_MASTER_IP=master
export SPARK_LOCAL_IP=127.0.0.1
export HIVE_HOME=~/bigdata/apache-hive-3.0.0-bin
export SPARK_CLASSPATH=$HIVE_HOME/lib/*:$SPARK_CLASSPATH

?

?

hadoop啟動出現Unable to load native-hadoop library for your platform

修改hadoop-env.sh，不要去.bashrc還有什么/etc/下面的那個profile修改，沒用的
export HADOOP_HOME=~/bigdata/hadoop-2.7.7
export JAVA_HOME=~/Java/jdk1.8.0_131
export LD_LIBRARY_PATH=$HADOOP_HOME/lib/native
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
export HADOOP_OPTS="-Djava.library.path=${HADOOP_HOME}/lib/native"?

?

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