Brandon Li created HDFS-6916:
--------------------------------
Summary: Like NameNode, NFS gateway should do name-id mapping with
multiple sources
Key: HDFS-6916
URL: https://issues.apache.org/jira/browse/HDFS-6916
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Brandon Li
Like what's already done in Namenode, NFS should also do the name id mapping in
a similar way, e.g., shell/ldap/composit mappings.
The difference here is that, NN does mapping from user name to group lists,
while NFS from name to id.
Some problem has been found with current name-id mapping: the LDAP server has
lots of user account and it returns a limited number of entries to each search
request.
Current code (IdUserGroup) uses a shell command to retrieve user accounts. One
shell command might not get the complete list, e.g., due to some limit set in
LDAP server. Even it does, it's not necessary to cache all user account in the
memory.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
