In this recipe, we will look at some of the common issues with Datanode and how to resolve them.
The user is expected to complete the previous recipe and must have completed the Setting up multi-node HBase cluster recipe in Chapter 9, HBase Administration. In this recipe, we will be using the already configured Hadoop cluster.
Scenario 1: Datanode not starting due to permission issues on the
Datanode directory specified by
dn1.cyrus.commaster node in the cluster and change to user
testfile to the location using the following command:
$ touch /space/dn1/test
If it succeeds, then the permissions are fine.