Some problems encountered when I started hadoop.
- If the system is 64-bit, you cannot start hdfs: ./sbin/start-dfs.sh. And have the following errors:
sed: -e expression #1, char 6: unknown option to `s'
HotSpot(TM): ssh: Could not resolve hostname HotSpot(TM): Name or service not known
64-Bit: ssh: Could not resolve hostname 64-Bit: Name or service not known
Java: ssh: Could not resolve hostname Java: Name or service not known
Server: ssh: Could not resolve hostname Server: Name or service not known
VM: ssh: Could not resolve hostname VM: Name or service not known
- Solution:
vi etc/hadoop/hadoop-env.sh
- add:
exportHADOOP_COMMON_LIB_NATIVE_DIR=${HADOOP_PREFIX}/lib/native
- modify:
export HADOOP_OPTS="-Djava.library.path=$HADOOP_PREFIX/lib"