Auto fetching of Hadoop GID and mapred UID

Instead of keeping hard coded values of hadoop group and mapred user, this patch adds the feature of fetching the values from the node itself. Signed-off-by: Shashank Sahni <[email protected]>
siel-iiith · Oct 26, 2013 · 68fcb52 · 68fcb52
1 parent 11c9693
commit 68fcb52
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Showing 2 changed files with 5 additions and 6 deletions.
diff --git a/multistack/constants.py b/multistack/constants.py
@@ -2,4 +2,5 @@
 
 SSH_ATTEMPTS = 10
 SSH_TIMEOUT = 60
-INSTANCE_TIMEOUT = 120
+INSTANCE_TIMEOUT = 120
+UMASK='0022'
diff --git a/multistack/services/run.py b/multistack/services/run.py
@@ -1,9 +1,5 @@
 from multistack.services.remote import Remote
-
-HADOOP_GID='123'
-HDFS_UID='201'
-MAPRED_UID='202'
-UMASK='0022'
+from multistack.constants import *
 
 def setup_s3fs(credentials, remote):
     """
@@ -38,6 +34,8 @@ def mount_bucket(bucket, remote):
     @type   remote: remote.Remote instance
     """
 
+    MAPRED_UID = remote.sudo("id -u mapred")
+    HADOOP_GID = remote.sudo("grep -i hadoop /etc/group | cut -d ':' -f 3")
     remote.sudo("mkdir /media/{0}".format(bucket))
     remote.sudo("chown root:hadoop -R /media/{0}".format(bucket))
     remote.sudo("chmod 775 -R /media/{0}".format(bucket))