Loaded library lib-native-libhadoop.so.1.0.0 might have disabled stack guard

[DataFlair Team]

I am installing Apache Hadoop 2.7.1, when I run the script to start HDFS and YARN services: sbin/start-all.sh, I am getting following error:

Starting namenodes on [Java HotSpot(TM) Client VM warning: You have loaded library /home/hdadmin/hadoop-2.7.1/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
It’s highly recommended that you fix the library with ‘execstack -c
‘, or link it with ‘-z noexecstack’.
localhost]
sed: -e expression #1, char 6: unknown option to `s’
-c: Unknown cipher type ‘cd’
localhost: starting namenode, logging to /home/hdadmin/hadoop-2.7.1/logs/hadoop-hdadmin-namenode-ubuntu.out
guard.: ssh: Could not resolve hostname guard.: Name or service not known
now.: ssh: Could not resolve hostname now.: Name or service not known
noexecstack’.: ssh: Could not resolve hostname noexecstack’.: Name or service not known
Client: ssh: Could not resolve hostname client: Name or service not known
VM: ssh: Could not resolve hostname vm: Name or service not known
have: ssh: Could not resolve hostname have: Name or service not known
warning:: ssh: Could not resolve hostname warning:: Name or service not known
HotSpot(TM): ssh: Could not resolve hostname hotspot(tm): Name or service not known
You: ssh: Could not resolve hostname you: Name or service not known
library: ssh: Could not resolve hostname library: Name or service not known
loaded: ssh: Could not resolve hostname loaded: Name or service not known
which: ssh: Could not resolve hostname which: Name or service not known
stack: ssh: Could not resolve hostname stack: Name or service not known
try: ssh: Could not resolve hostname try: Name or service not known
to: ssh: Could not resolve hostname to: Name or service not known
stack: ssh: Could not resolve hostname stack: Name or service not known
guard: ssh: Could not resolve hostname guard: Name or service not known
It’s: ssh: Could not resolve hostname it’s: Name or service not known
recommended: ssh: Could not resolve hostname recommended: Name or service not known
highly: ssh: Could not resolve hostname highly: Name or service not known
that: ssh: Could not resolve hostname that: Name or service not known
you: ssh: Could not resolve hostname you: Name or service not known
library: ssh: Could not resolve hostname library: Name or service not known

‘,: ssh: Could not resolve hostname
‘,: Name or service not known

[DataFlair Team]

Please add following variables to .bashrc environment file, where HADOOP_PREFIX is path to root of Hadoop installation

export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_PREFIX/lib/native
export HADOOP_OPTS=”-Djava.library.path=$HADOOP_PREFIX/lib”

Apart from above mentioned parameter you should specify following parameters in the same file: exportHADOOP_PREFIX="/home/hdadmin/hadoop-2.6.0" export PATH=$PATH:$HADOOP_PREFIX/bin export PATH=$PATH:$HADOOP_PREFIX/sbin export HADOOP_MAPRED_HOME=${HADOOP_PREFIX} export HADOOP_COMMON_HOME=${HADOOP_PREFIX} export HADOOP_HDFS_HOME=${HADOOP_PREFIX} export YARN_HOME=${HADOOP_PREFIX}

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