1
vote
0answers
16 views

When and how are initial directories created in HDFS

I have a Hadoop setup in which the configured HDFS umask is 027 instead of the default one. Some of the initially created directories have correct permissions (like tmp drwxrwxrwx) but others such as ...
1
vote
1answer
243 views

Implications of Multiple JobTracker nodes in a Hadoop cluster?

I get the impression that one can, potentially, have multiple JobTracker nodes configured to share the same set of MR (TaskTracker) nodes. I know that, conventionally, all the nodes in a Hadoop ...
0
votes
1answer
91 views

Hadoop Configuration Files - Who Needs What?

As I am setting up Hadoop, one question keeps popping in my mind but I can't find the answer. Which Hadoop configuration files need to be copied to which nodes. For example, I'm making changes to the ...
0
votes
1answer
1k views

How do I grant a user permission to use Hadoop via Kerberos?

I've setup Hadoop to use Kerberos (following the Cloudera security guide), but it is unclear how I connect to hadoop with regular users (e.g. username=myuser). Currently I have myself ...
2
votes
1answer
2k views

Is there any way to use arrays in a puppet module (not in template)?

I want to use puppet to manage a hadoop cluster. On the machines we have several directories which must be created and set permissions. But i'm unable to add array values for defined methods. define ...