hadoop2
Permission Denied error while running start-dfs.sh
I also encountered the same thing, I did so I found that my pdsh default rcmd is rsh, not ssh, rsh and ssh remote login authentication is not the same, when installing hadoop I configured ssh localhost password-free login, but rsh is not possible. so，try： 1.check your pdsh default rcmd rsh pdsh -q -w localhost … Read more
Spark Unable to load native-hadoop library for your platform
Steps to fix: download Hadoop binaries unpack to directory of your choice set HADOOP_HOME to point to that directory. add $HADOOP_HOME/lib/native to LD_LIBRARY_PATH.
Datanode not starts correctly
You can do the following method, copy to clipboard datanode clusterID for your example, CID-8bf63244-0510-4db6-a949-8f74b50f2be9 and run following command under HADOOP_HOME/bin directory ./hdfs namenode -format -clusterId CID-8bf63244-0510-4db6-a949-8f74b50f2be9 then this code formatted the namenode with datanode cluster ids.
Hadoop “Unable to load native-hadoop library for your platform” warning
I assume you’re running Hadoop on 64bit CentOS. The reason you saw that warning is the native Hadoop library $HADOOP_HOME/lib/native/libhadoop.so.1.0.0 was actually compiled on 32 bit. Anyway, it’s just a warning, and won’t impact Hadoop’s functionalities. Here is the way if you do want to eliminate this warning, download the source code of Hadoop and … Read more